Hi Chris,
I did a similar test for reading a tag. As I never did such tests before, I 
don't know if the method is correct, but the results are similar to the ones I 
get running the same test for the s7. I also pushed this to my fork. Tomorrow I 
will try to do some tests on the PLC to see if I can perform fetching a lot of 
data (like I did on the s7) and if the writing works.

Etienne

On 2020/03/16 13:47:53, Christofer Dutz <[email protected]> wrote: 
> Hi Etienne,
> 
> You probably pulled in a SNAPSHOT from our maven repo ... if this is newer 
> than yours, Maven usually pulls new versions the first time you build on 
> every day. ... yes this can be annoying ;-)
> 
> Chris
> 
> Am 16.03.20, 14:41 schrieb "Etienne Robinet" <[email protected]>:
> 
>     Hi,
>     Ok I see, seems to be resolved once rebuilt. But how does it come that it 
> generates the getLengthInBits() before I updated it?
>     
>     Etienne
>     On 2020/03/16 13:10:24, Christofer Dutz <[email protected]> 
> wrote: 
>     > Hi Etienne,
>     > 
>     > it's there ... have a look:
>     > 
> https://github.com/apache/plc4x/blob/develop/plc4j/spi/src/main/java/org/apache/plc4x/java/spi/generation/Message.java
>     > 
>     > The problem is that you checked out your fork. That doesn't update 
> automatically if someone pushes anything to our repo.
>     > You manually have to do that.
>     > 
>     > Please check "Keeping your fork up to date" on 
> https://plc4x.apache.org/developers/contributing.html
>     > 
>     > Hope that helps.
>     > 
>     > Chris
>     > 
>     > 
>     > 
>     > Am 16.03.20, 13:50 schrieb "Etienne Robinet" <[email protected]>:
>     > 
>     >     Hi Chris,
>     >     
>     >     buy how do I stop it from generating the error? He calls the 
> getLengthInBits on an implmentation of Message so that is where the error 
> happens (also the @Override). I checked the Message interface and there is no 
> such metho, also checked the pojo-template and couldn't find the method. I 
> did not had that before when generating sources (I think since I ran some 
> tests on the PLC).
>     >     Etienne
>     >     On 2020/03/16 12:46:48, Christofer Dutz <[email protected]> 
> wrote: 
>     >     > Hi Etienne,
>     >     > 
>     >     > well the getLengthInBytes is still there ... it just calls the 
> getLengthInBits and divides that by 8.
>     >     > The reason was that with the Firmata driver we first had a 
> protocol where the getLengthInBytes returned 0 because one datatype didn't 
> have a full multiple of 8 as content. This made getLengthInBytes return 0 
> instead of 1.
>     >     > 
>     >     > In general nothing should have changed as the getLengthInBytes 
> still exists. It's just that there is an additional getLengthInBits.
>     >     > 
>     >     > Chris
>     >     > 
>     >     > 
>     >     > 
>     >     > 
>     >     > Am 16.03.20, 13:19 schrieb "Etienne Robinet" <[email protected]>:
>     >     > 
>     >     >     Hi Chris,
>     >     >     
>     >     >     Thanks for the advice I will try to find a way for that.
>     >     >     I tried executing some tests but I realisedI got an error on 
> runtime. After looking at the generated source, this is what I have:
>     >     >     https://i.imgur.com/LflQvpw.png
>     >     >     Why does the getLengthInBytes method got swapped by 
> getLengthInBits? The error comes that he is looking for the gteLengthInBits() 
> on a Message, and the @Override is also wrong.
>     >     >     
>     >     >     Etienne 
>     >     >     On 2020/03/16 11:46:53, Christofer Dutz 
> <[email protected]> wrote: 
>     >     >     > Hi Etienne,
>     >     >     > 
>     >     >     > well there must be some way to distinguish the two ... 
> perhaps using more than one field to discriminate the types?
>     >     >     > 
>     >     >     > Chris
>     >     >     > 
>     >     >     > 
>     >     >     > 
>     >     >     > Am 16.03.20, 12:01 schrieb "Etienne Robinet" 
> <[email protected]>:
>     >     >     > 
>     >     >     >     Hi Chris,
>     >     >     >     I will have a look to build the tests for the 
> parser/serializer.
>     >     >     >     
>     >     >     >     I have another question. In Cip when data is too large 
> and wont fit into a signle packet (>500 bytes), we use fragmentedRequest. The 
> problem I'm facing is: ReadFragmentedService and UnconnectedRequest have the 
> same service number 0x52.
>     >     >     >     From the structure, the UnconnectedRequest contains the 
> fragmentedServiceRequest; but the responses are at the same 'level' as the 
> UnconnectedRequest. So I don't know for now how to implement this and if we 
> even need it (but I still find a good option);
>     >     >     >     
>     >     >     >     Etienne
>     >     >     >     On 2020/03/16 10:35:34, Christofer Dutz 
> <[email protected]> wrote: 
>     >     >     >     > Hi Etienne,
>     >     >     >     > 
>     >     >     >     > I would also suggest you have a look at the unit-test 
> framework I built for testing the parsers, serializers and the model.
>     >     >     >     > 
>     >     >     >     > 
> plc4j/drivers/s7/src/test/java/org/apache/plc4x/java/s7/readwrite/S7DriverTestsuite.java
>     >     >     >     > 
> plc4j/drivers/s7/src/test/resources/testsuite/S7DriverTestsuite.xml
>     >     >     >     > 
>     >     >     >     > I'm currently still working on an integration 
> test-suite that will test the protocol component using pre-defined messages:
>     >     >     >     > 
>     >     >     >     > 
> plc4j/drivers/s7/src/test/java/org/apache/plc4x/java/s7/readwrite/S7ParserSerializerTestsuite.java
>     >     >     >     > 
> plc4j/drivers/s7/src/test/resources/testsuite/S7ParserSerializerTestsuite.xml
>     >     >     >     > 
>     >     >     >     > But I wouldn't call that production ready yet as I 
> was distracted by other work and have to check where I dropped the ball last 
> time.
>     >     >     >     > 
>     >     >     >     > Chris
>     >     >     >     > 
>     >     >     >     > 
>     >     >     >     > 
>     >     >     >     > 
>     >     >     >     > Am 16.03.20, 11:28 schrieb "Etienne Robinet" 
> <[email protected]>:
>     >     >     >     > 
>     >     >     >     >     Hi Chris, 
>     >     >     >     >     this did also the trick and looks far more clean, 
> thanks for the help on that!
>     >     >     >     >     
>     >     >     >     >     I am now working on the writing, might have a 
> look on connected messages afterwards. The fact is that now I'm doing home 
> office so it will be a bit trickier to test, but I might get a solution in 
> the following days. 
>     >     >     >     >     Stay safe,
>     >     >     >     >     
>     >     >     >     >     Etienne
>     >     >     >     >     On 2020/03/13 17:09:06, Christofer Dutz 
> <[email protected]> wrote: 
>     >     >     >     >     > Hi Etienne,
>     >     >     >     >     > 
>     >     >     >     >     > I just took the version before your last commit 
> and applied the pattern how you pass along the arguments.
>     >     >     >     >     > Please have a look ... I haven't compiled the 
> spec, but it should work. As you can see, if you want to use the
>     >     >     >     >     > arguments inside a sub-type, you have to 
> re-declare the variable (identical name and type) in the sub-type.
>     >     >     >     >     > 
>     >     >     >     >     > 
>     >     >     >     >     > //
>     >     >     >     >     >  // Licensed to the Apache Software Foundation 
> (ASF) under one
>     >     >     >     >     >  // or more contributor license agreements.  
> See the NOTICE file
>     >     >     >     >     >  // distributed with this work for additional 
> information
>     >     >     >     >     >  // regarding copyright ownership.  The ASF 
> licenses this file
>     >     >     >     >     >  // to you under the Apache License, Version 
> 2.0 (the
>     >     >     >     >     >  // "License"); you may not use this file 
> except in compliance
>     >     >     >     >     >  // with the License.  You may obtain a copy of 
> the License at
>     >     >     >     >     >  //
>     >     >     >     >     >  //     
> http://www.apache.org/licenses/LICENSE-2.0
>     >     >     >     >     >  //
>     >     >     >     >     >  // Unless required by applicable law or agreed 
> to in writing,
>     >     >     >     >     >  // software distributed under the License is 
> distributed on an
>     >     >     >     >     >  // "AS IS" BASIS, WITHOUT WARRANTIES OR 
> CONDITIONS OF ANY
>     >     >     >     >     >  // KIND, either express or implied.  See the 
> License for the
>     >     >     >     >     >  // specific language governing permissions and 
> limitations
>     >     >     >     >     >  // under the License.
>     >     >     >     >     >  //
>     >     >     >     >     > 
>     >     >     >     >     >  
> //////////////////////////////////////////////////////////////////
>     >     >     >     >     >  ///EthernetIP Header of size 24
>     >     >     >     >     >  
> /////////////////////////////////////////////////////////////////
>     >     >     >     >     > 
>     >     >     >     >     > [discriminatedType 'EipPacket'
>     >     >     >     >     >     [discriminator uint 16 'command']
>     >     >     >     >     >     [implicit      uint 16 'len' 'lengthInBytes 
> - 24']
>     >     >     >     >     >     [simple        uint 32 'sessionHandle']
>     >     >     >     >     >     [simple        uint 32 'status']
>     >     >     >     >     >     [array         uint 8  'senderContext' 
> count '8']
>     >     >     >     >     >     [simple        uint 32 'options']
>     >     >     >     >     >     [typeSwitch 'command'
>     >     >     >     >     >             ['0x0065' EipConnectionRequest
>     >     >     >     >     >                 [const  uint    16   
> 'protocolVersion'   '0x01']
>     >     >     >     >     >                 [const  uint    16   'flags'    
>          '0x00']
>     >     >     >     >     >             ]
>     >     >     >     >     >             ['0x0066' EipDisconnectRequest
>     >     >     >     >     >             ]
>     >     >     >     >     >             ['0x006F' CipRRData [uint  16  
> 'len']
>     >     >     >     >     >                 [reserved  uint    32    
> '0x00000000']
>     >     >     >     >     >                 [reserved  uint    16    
> '0x0000']
>     >     >     >     >     >                 [simple CipExchange 'exchange' 
> ['len-6']]
>     >     >     >     >     >             ]
>     >     >     >     >     >         ]
>     >     >     >     >     > ]
>     >     >     >     >     > [type  'CipExchange' [uint 16 'exchangeLen']
>     >     >     >     >     >     [const          uint        16      
> 'itemCount'           '0x0002']     //2 items
>     >     >     >     >     >     [const          uint        32      
> 'nullPtr'             '0x0']          //NullPointerAddress
>     >     >     >     >     >     [const          uint        16      
> 'UnconnectedData'     '0x00B2']   //Connection Manager
>     >     >     >     >     >     [implicit       uint        16      'size'  
>               'lengthInBytes - 8 - 2'] //remove fields above and routing
>     >     >     >     >     >     [simple         CipService          
> 'service' ['exchangeLen - 10'] ]
>     >     >     >     >     > ]
>     >     >     >     >     > 
>     >     >     >     >     > [discriminatedType  'CipService' [uint 16 
> 'serviceLen']
>     >     >     >     >     >     [discriminator  uint    8   'service']
>     >     >     >     >     >     [typeSwitch 'service'
>     >     >     >     >     >         ['0x4C' CipReadRequest
>     >     >     >     >     >             [simple     int     8   
> 'RequestPathSize']
>     >     >     >     >     >             [array      int     8   'tag'   
> length  '(RequestPathSize*2)']
>     >     >     >     >     >             [simple     uint    16  'elementNb']
>     >     >     >     >     >         ]
>     >     >     >     >     >         ['0xCC' CipReadResponse [uint 16 
> 'serviceLen']
>     >     >     >     >     >               [reserved   uint            8   
> '0x00']
>     >     >     >     >     >               [simple     uint            8   
> 'status']
>     >     >     >     >     >               [simple     uint            8   
> 'extStatus']
>     >     >     >     >     >               [enum       CIPDataTypeCode   
> 'dataType']
>     >     >     >     >     >               [array      int             8   
> 'data'  length  'serviceLen-6']
>     >     >     >     >     >         ]
>     >     >     >     >     >         ['0x0A' MultipleServiceRequest [uint 16 
> 'serviceLen']
>     >     >     >     >     >                [const  int     8   
> 'RequestPathSize'   '0x02']
>     >     >     >     >     >                [const  uint    32  
> 'RequestPath'       '0x01240220']   //Logical Segment: Class(0x20) 0x02, 
> Instance(0x24) 01 (Message Router)
>     >     >     >     >     >                [simple Services  'data' 
> ['serviceLen - 6 ']]
>     >     >     >     >     >         ]
>     >     >     >     >     >         ['0x8A' MultipleServiceResponse [uint 
> 16 'serviceLen']
>     >     >     >     >     >                [reserved   uint    8   '0x0']
>     >     >     >     >     >                [simple     uint    8   'status']
>     >     >     >     >     >                [simple     uint    8   
> 'extStatus']
>     >     >     >     >     >                [simple Services  'data' 
> ['serviceLen - 4']]
>     >     >     >     >     >         ]
>     >     >     >     >     >         ['0x0052'   CipUnconnectedRequest
>     >     >     >     >     >                [reserved   uint    8   '0x02']
>     >     >     >     >     >                [reserved   uint    8   '0x20']  
>  // setRequestPathLogicalClassSegment
>     >     >     >     >     >                [reserved   uint    8   '0x06']  
>  // set request class path
>     >     >     >     >     >                [reserved   uint    8   '0x24']  
>  // setRequestPathLogicalInstanceSegment
>     >     >     >     >     >                [reserved   uint    8   '0x01']  
>  // setRequestPathInstance
>     >     >     >     >     >                [reserved   uint    16  
> '0x9D05']   //Timeout 5s
>     >     >     >     >     >                [implicit   uint    16   
> 'messageSize'   'lengthInBytes - 10 - 4']   //substract above and routing
>     >     >     >     >     >                [simple     CipService  
> 'service']
>     >     >     >     >     >                [const      uint    16  'route' 
> '0x0001']
>     >     >     >     >     >                [simple     int     8   
> 'backPlane']
>     >     >     >     >     >                [simple     int     8   'slot']
>     >     >     >     >     >         ]
>     >     >     >     >     >     ]
>     >     >     >     >     > ]
>     >     >     >     >     > 
>     >     >     >     >     > [type   'Services' [uint   16   'servicesLen']
>     >     >     >     >     >     [simple uint    16  'serviceNb']
>     >     >     >     >     >     [array  uint        16  'offsets'       
> count  'serviceNb']
>     >     >     >     >     >     [array  CipService   'services'      count  
> 'serviceNb' ['servicesLen/serviceNb'] ]
>     >     >     >     >     > ]
>     >     >     >     >     > 
>     >     >     >     >     > [enum uint   16   'CIPDataTypeCode' [uint 8  
> 'size']
>     >     >     >     >     >     ['0X00C1'   BOOL            ['1']]
>     >     >     >     >     >     ['0X00CA'   REAL            ['4']]
>     >     >     >     >     >     ['0X00C4'   DINT            ['4']]
>     >     >     >     >     >     ['0X00C3'   INT             ['2']]
>     >     >     >     >     >     ['0X00C2'   SINT            ['1']]
>     >     >     >     >     >     ['0X02A0'   STRUCTURED      ['88']]
>     >     >     >     >     >     ['0X02A0'   STRING          ['88']]
>     >     >     >     >     >     ['0X02A0'   STRING36        ['40']]
>     >     >     >     >     >     ['-1'       UNKNOWN         ['-1']]
>     >     >     >     >     > ]
>     >     >     >     >     > 
>     >     >     >     >     > 
>     >     >     >     >     > Hope that helps,
>     >     >     >     >     >        Chris
>     >     >     >     >     > 
>     >     >     >     >     > 
>     >     >     >     >     > 
>     >     >     >     >     > 
>     >     >     >     >     > 
>     >     >     >     >     > Am 13.03.20, 17:09 schrieb "Etienne Robinet" 
> <[email protected]>:
>     >     >     >     >     > 
>     >     >     >     >     >     Hi all,
>     >     >     >     >     >     sorry for double-posting, but I found the 
> fix. For me the code does not look that 'sexy' now but it works. I do not 
> know if I can make it better but for now I will stick to this :) I pushed it 
> to the 'eip' branch of my fork.
>     >     >     >     >     >     Have a nice weekend,
>     >     >     >     >     >     
>     >     >     >     >     >     Etienne
>     >     >     >     >     >     On 2020/03/13 14:48:35, Etienne Robinet 
> <[email protected]> wrote: 
>     >     >     >     >     >     > Hi,
>     >     >     >     >     >     > Thanks for the advice. I am trying to 
> pass the length down the subclasses, but I'm stuck. This does not work as it 
> seems:
>     >     >     >     >     >     > https://i.imgur.com/77bbdBN.png CipRRData 
> does not know what 'len' is nor its value as it seems.
>     >     >     >     >     >     > 
>     >     >     >     >     >     > I wanted to inspire mysefl from the 
> CotpPayload, but unfortunately, the first byte of the whole packet is a 
> discriminator (command).
>     >     >     >     >     >     > 
>     >     >     >     >     >     > Etienne
>     >     >     >     >     >     > On 2020/03/13 13:52:16, Christofer Dutz 
> <[email protected]> wrote: 
>     >     >     >     >     >     > > Hi Etienne,
>     >     >     >     >     >     > > 
>     >     >     >     >     >     > > I think you can solve your problem in 
> two ways. 
>     >     >     >     >     >     > > In all you need to pass down the length 
> of the packet in total from the root type (which knows the length).
>     >     >     >     >     >     > > 1) You keep on just reading bytes and 
> parse in the protocol logic class (Like in the S7 driver or KNX)
>     >     >     >     >     >     > > 2) You directly parse PlcValues (using 
> "dataIo" types) 
>     >     >     >     >     >     > > 
>     >     >     >     >     >     > > I would prefer option 2 but 1 is 
> simpler. The reason I'm doing 1) in S7 and KNX is that I need to know the 
> type from the request to decode in the S7 case and in the KNX case I need to 
> know the type from an external source in order to decode it.
>     >     >     >     >     >     > > 
>     >     >     >     >     >     > > 
>     >     >     >     >     >     > > Chris
>     >     >     >     >     >     > > 
>     >     >     >     >     >     > > Am 13.03.20, 14:45 schrieb "Etienne 
> Robinet" <[email protected]>:
>     >     >     >     >     >     > > 
>     >     >     >     >     >     > >     Yes this is exactly what I need. If 
> I get the remaining bytes, I can know the element numbers as I have their 
> type!
>     >     >     >     >     >     > >     
>     >     >     >     >     >     > >     Etienne
>     >     >     >     >     >     > >     
>     >     >     >     >     >     > >     On 2020/03/13 13:40:09, Julian 
> Feinauer <[email protected]> wrote: 
>     >     >     >     >     >     > >     > Hey,
>     >     >     >     >     >     > >     > 
>     >     >     >     >     >     > >     > there ist he possibility to get 
> the remaining size oft he bytes of the message. Does that help?
>     >     >     >     >     >     > >     > Otherwise I misread your question.
>     >     >     >     >     >     > >     > 
>     >     >     >     >     >     > >     > Julian
>     >     >     >     >     >     > >     > 
>     >     >     >     >     >     > >     > Am 13.03.20, 14:37 schrieb 
> "Etienne Robinet" <[email protected]>:
>     >     >     >     >     >     > >     > 
>     >     >     >     >     >     > >     >     Hi Julian,
>     >     >     >     >     >     > >     >     so how should I declare this 
> field in the mspec if I can not get its size?
>     >     >     >     >     >     > >     >     Thank you,
>     >     >     >     >     >     > >     >     
>     >     >     >     >     >     > >     >     Etienne
>     >     >     >     >     >     > >     >     
>     >     >     >     >     >     > >     >     On 2020/03/13 13:35:52, 
> Julian Feinauer <[email protected]> wrote: 
>     >     >     >     >     >     > >     >     > Hi Etienne,
>     >     >     >     >     >     > >     >     > 
>     >     >     >     >     >     > >     >     > first, Congratulations on 
> your Progress!
>     >     >     >     >     >     > >     >     > To you question:
>     >     >     >     >     >     > >     >     > This is a common issue with 
> many protocols.
>     >     >     >     >     >     > >     >     > We solve that in the 
> protocol layer by keeping the request until we get the response (see for 
> Example how we did it for S7).
>     >     >     >     >     >     > >     >     > So you cannot solve that in 
> mpsec at compile time but have to decode the byte[] you get with the 
> Information from the Request.
>     >     >     >     >     >     > >     >     > 
>     >     >     >     >     >     > >     >     > Hope that helps!
>     >     >     >     >     >     > >     >     > Julian
>     >     >     >     >     >     > >     >     > 
>     >     >     >     >     >     > >     >     > Am 13.03.20, 14:02 schrieb 
> "Etienne Robinet" <[email protected]>:
>     >     >     >     >     >     > >     >     > 
>     >     >     >     >     >     > >     >     >     Hi Chris,
>     >     >     >     >     >     > >     >     >     I have yet another 
> question. When sending a request for multiple elements (let's say 10 elements 
> of an array), you get a response from the PLC with all the data at the end of 
> the packet. The problem is, in the request there is the number of elements we 
> want, but not in the response. So so the protocol knows how many elements 
> there are in the response packet, but not the packet itself. This is quite a 
> problem as for the parse, we need to know the length of the 'data' array 
> containing the response data (for now it was only depending on the type, but 
> I would need type*elements).
>     >     >     >     >     >     > >     >     >     
>     >     >     >     >     >     > >     >     >     I tested a bit by 
> modifying the generated IO, and 1 way to do it is to get the remaining bytes 
> and divide this by the datatype size. I just wanted to ask if someone would 
> know how to declare this in the mspec, as I don't want to touch at the 
> template. I also thought about having an attribute on the response, but I 
> don't know how to put an attribute that won't get parsed/serialized. Hope I 
> am clear enough, but this is  a code sample that worked (modifying generated 
> sources):
>     >     >     >     >     >     > >     >     >     
> https://i.imgur.com/Xm6DxEZ.png (notice the error but this code works if I 
> write it myself)
>     >     >     >     >     >     > >     >     >     And here is how I put 
> it in the mspec: https://i.imgur.com/Ye1Kl9q.png (you can see the number of 
> element is not present)
>     >     >     >     >     >     > >     >     >     
>     >     >     >     >     >     > >     >     >     Any help is welcome of 
> course! :)
>     >     >     >     >     >     > >     >     >     Etienne
>     >     >     >     >     >     > >     >     >     
>     >     >     >     >     >     > >     >     >     
>     >     >     >     >     >     > >     >     >     
>     >     >     >     >     >     > >     >     >     
>     >     >     >     >     >     > >     >     >     
>     >     >     >     >     >     > >     >     >     On 2020/03/12 21:34:12, 
> Christofer Dutz <[email protected]> wrote: 
>     >     >     >     >     >     > >     >     >     > Hi Etienne,
>     >     >     >     >     >     > >     >     >     > 
>     >     >     >     >     >     > >     >     >     > that's amazing news 
> :-) ... congratulations :-)
>     >     >     >     >     >     > >     >     >     > 
>     >     >     >     >     >     > >     >     >     > Also had a look at 
> your mspec and I think you have done a great job with that. I wasn't quite 
> sure about the relation between CipRRData and CipExchange, but your solution 
> looks rock-solid.
>     >     >     >     >     >     > >     >     >     > 
>     >     >     >     >     >     > >     >     >     > And now reading that 
> you even managed to get something working, that makes me very happy.
>     >     >     >     >     >     > >     >     >     > 
>     >     >     >     >     >     > >     >     >     > Tomorrow I'll be a 
> little consumed with signing the contract with the KNX foundation but I'll 
> try to have a look at your fork.
>     >     >     >     >     >     > >     >     >     > 
>     >     >     >     >     >     > >     >     >     > Thanks for your great 
> work :)
>     >     >     >     >     >     > >     >     >     > 
>     >     >     >     >     >     > >     >     >     > Chris
>     >     >     >     >     >     > >     >     >     > 
>     >     >     >     >     >     > >     >     >     > 
>     >     >     >     >     >     > >     >     >     > 
>     >     >     >     >     >     > >     >     >     > Am 12.03.20, 17:50 
> schrieb "Etienne Robinet" <[email protected]>:
>     >     >     >     >     >     > >     >     >     > 
>     >     >     >     >     >     > >     >     >     >     Hi all,
>     >     >     >     >     >     > >     >     >     >     again a 
> productive day, I pushed to my branch and the driver support reading, 
> multiple reading and the camel component works (in karaf) and takes a List of 
> strings. Tested it on a different PLC and it also worked! Next I'm going to 
> implement the array readings and then maybe writing (tests needs to be done 
> too).
>     >     >     >     >     >     > >     >     >     >     
>     >     >     >     >     >     > >     >     >     >     Etienne
>     >     >     >     >     >     > >     >     >     >     
>     >     >     >     >     >     > >     >     >     >     On 2020/03/12 
> 07:18:32, Etienne Robinet <[email protected]> wrote: 
>     >     >     >     >     >     > >     >     >     >     > Hi Chris,
>     >     >     >     >     >     > >     >     >     >     > yes that's what 
> I thought so I managed to work around like this: 
>     >     >     >     >     >     > >     >     >     >     > 
>     >     >     >     >     >     > >     >     >     >     > 
> https://github.com/etiennerobinet/plc4x/blob/eip/protocols/eip/src/main/resources/protocols/eip/eip.mspec
>     >     >     >     >     >     > >     >     >     >     > 
>     >     >     >     >     >     > >     >     >     >     > And this works 
> for reading! I managed to make a quick test and read via the tag name. Now my 
> question is: can I create sub-types that are also discriminated with 
> sub-subtypes? That would allow to create the ReadRequest only, as the fields 
> before are mainly constant/implicit.
>     >     >     >     >     >     > >     >     >     >     > Etienne
>     >     >     >     >     >     > >     >     >     >     > 
>     >     >     >     >     >     > >     >     >     >     > On 2020/03/11 
> 20:24:14, Christofer Dutz <[email protected]> wrote: 
>     >     >     >     >     >     > >     >     >     >     > > Hi Etienne,
>     >     >     >     >     >     > >     >     >     >     > > 
>     >     >     >     >     >     > >     >     >     >     > > you are 
> defining the type CipRRData twice ... once as one of the sub-types of 
> EipPacket and once as a dedicated discriminated type.
>     >     >     >     >     >     > >     >     >     >     > > 
>     >     >     >     >     >     > >     >     >     >     > > Chris
>     >     >     >     >     >     > >     >     >     >     > > 
>     >     >     >     >     >     > >     >     >     >     > > 
>     >     >     >     >     >     > >     >     >     >     > > PS: I have no 
> idea why I didn't finish writing this email and I just noticed when closing 
> everything down ... sorry for the late reply.
>     >     >     >     >     >     > >     >     >     >     > > 
>     >     >     >     >     >     > >     >     >     >     > > 
>     >     >     >     >     >     > >     >     >     >     > > 
>     >     >     >     >     >     > >     >     >     >     > > Am 11.03.20, 
> 09:30 schrieb "Etienne Robinet" <[email protected]>:
>     >     >     >     >     >     > >     >     >     >     > > 
>     >     >     >     >     >     > >     >     >     >     > >     Hi all,
>     >     >     >     >     >     > >     >     >     >     > >     
>     >     >     >     >     >     > >     >     >     >     > >     I have a 
> quick question. I've been working on the CIP encapsulation but hitting a 
> problem with the mspec design. Here is the error I am facing: 
> https://i.imgur.com/iCfh59n.png
>     >     >     >     >     >     > >     >     >     >     > >     
>     >     >     >     >     >     > >     >     >     >     > >     The 
> problem here is that this CipRRData should also be of type EipPacket. When 
> the command of an EipPacket is '0x66' this means SendRRData (for Read/Write 
> and Request/Response so I have to discriminate it on the sub level). The 
> problem is that after generation, CipRRData implements Message but does not 
> extend EipPacket. How should I do it? Here is the mspec:
>     >     >     >     >     >     > >     >     >     >     > >     
>     >     >     >     >     >     > >     >     >     >     > >     
> [discriminatedType 'EipPacket'
>     >     >     >     >     >     > >     >     >     >     > >         
> [discriminator uint 16 'command']
>     >     >     >     >     >     > >     >     >     >     > >         
> [implicit      uint 16 'len' 'lengthInBytes - 24']
>     >     >     >     >     >     > >     >     >     >     > >         
> [simple        uint 32 'sessionHandle']
>     >     >     >     >     >     > >     >     >     >     > >         
> [simple        uint 32 'status']
>     >     >     >     >     >     > >     >     >     >     > >         
> [array         uint 8  'senderContext' count '8']
>     >     >     >     >     >     > >     >     >     >     > >         
> [simple        uint 32 'options']
>     >     >     >     >     >     > >     >     >     >     > >         
> [typeSwitch 'command'
>     >     >     >     >     >     > >     >     >     >     > >               
>   ['0x0065' EipConnectionRequest
>     >     >     >     >     >     > >     >     >     >     > >               
>       [const  uint    16   'protocolVersion'   '0x01']
>     >     >     >     >     >     > >     >     >     >     > >               
>       [const  uint    16   'flags'             '0x00']
>     >     >     >     >     >     > >     >     >     >     > >               
>   ]
>     >     >     >     >     >     > >     >     >     >     > >               
>   ['0x0066' EipDisconnectRequest
>     >     >     >     >     >     > >     >     >     >     > >               
>   ]
>     >     >     >     >     >     > >     >     >     >     > >               
>   ['0x006F' CipRRData
>     >     >     >     >     >     > >     >     >     >     > >               
>       [const  uint    32  'EipInterface' '0x00000000']
>     >     >     >     >     >     > >     >     >     >     > >               
>       [const  uint    8   'timeout'   '0x0000']
>     >     >     >     >     >     > >     >     >     >     > >               
>   ]
>     >     >     >     >     >     > >     >     >     >     > >             ]
>     >     >     >     >     >     > >     >     >     >     > >     ]
>     >     >     >     >     >     > >     >     >     >     > >     
> [discriminatedType 'CipRRData'
>     >     >     >     >     >     > >     >     >     >     > >         
> [simple         uint        8       'itemNb']
>     >     >     >     >     >     > >     >     >     >     > >         
> [array          CipItem     'items'    length  'itemNb']
>     >     >     >     >     >     > >     >     >     >     > >         
> [discriminator  uint        8       'CipService']
>     >     >     >     >     >     > >     >     >     >     > >         
> [typeSwitch 'CipService'
>     >     >     >     >     >     > >     >     >     >     > >             
> ['0x52' CipUnconnectedRequest
>     >     >     >     >     >     > >     >     >     >     > >               
>   [simple CommandData    'data']
>     >     >     >     >     >     > >     >     >     >     > >             ]
>     >     >     >     >     >     > >     >     >     >     > >             
> ['0xCC' CipReadResponse
>     >     >     >     >     >     > >     >     >     >     > >               
>   [reserved   uint            8   '0x0000']
>     >     >     >     >     >     > >     >     >     >     > >               
>   [simple     uint            8   'status']
>     >     >     >     >     >     > >     >     >     >     > >               
>   [simple     uint            8   'extStatus']
>     >     >     >     >     >     > >     >     >     >     > >               
>   [simple     uint            8    'dataType']
>     >     >     >     >     >     > >     >     >     >     > >               
>   [array      uint            8   'data'  length  'dataType']
>     >     >     >     >     >     > >     >     >     >     > >     
>     >     >     >     >     >     > >     >     >     >     > >             ]
>     >     >     >     >     >     > >     >     >     >     > >         ]
>     >     >     >     >     >     > >     >     >     >     > >     ]
>     >     >     >     >     >     > >     >     >     >     > >     
>     >     >     >     >     >     > >     >     >     >     > >     [type 
> 'CipItem'
>     >     >     >     >     >     > >     >     >     >     > >         
> [simple uint    16  'typeID']
>     >     >     >     >     >     > >     >     >     >     > >         
> [simple uint    16  'size']
>     >     >     >     >     >     > >     >     >     >     > >     ]
>     >     >     >     >     >     > >     >     >     >     > >     
>     >     >     >     >     >     > >     >     >     >     > >     
> [discriminatedType 'CommandData'
>     >     >     >     >     >     > >     >     >     >     > >         
> [reserved         uint    8   '0x02']
>     >     >     >     >     >     > >     >     >     >     > >         
> [reserved         uint    8   '0x20']   // setRequestPathLogicalClassSegment
>     >     >     >     >     >     > >     >     >     >     > >         
> [reserved         uint    8   '0x06']   // set request class path
>     >     >     >     >     >     > >     >     >     >     > >         
> [reserved         uint    8   '0x24']   // 
> setRequestPathLogicalInstanceSegment
>     >     >     >     >     >     > >     >     >     >     > >         
> [reserved         uint    8   '0x01']   // setRequestPathInstance
>     >     >     >     >     >     > >     >     >     >     > >         
> [discriminator  uint    8   'CipService']
>     >     >     >     >     >     > >     >     >     >     > >         
> [typeSwitch 'CipService'
>     >     >     >     >     >     > >     >     >     >     > >             
> ['0x4C' CipReadRequest
>     >     >     >     >     >     > >     >     >     >     > >               
>   [simple     uint    8   'RequestPathSize']
>     >     >     >     >     >     > >     >     >     >     > >               
>   [reserved   uint    8   '0x91']
>     >     >     >     >     >     > >     >     >     >     > >               
>   [array      uint    8   'tag'   length  '(RequestPathSize*2) - 1']
>     >     >     >     >     >     > >     >     >     >     > >               
>   [reserved   uint    16  '0x0001']  //itemCount set to 1 for now
>     >     >     >     >     >     > >     >     >     >     > >             ]
>     >     >     >     >     >     > >     >     >     >     > >         ]
>     >     >     >     >     >     > >     >     >     >     > >     
>     >     >     >     >     >     > >     >     >     >     > >     ]
>     >     >     >     >     >     > >     >     >     >     > >     
>     >     >     >     >     >     > >     >     >     >     > >     
>     >     >     >     >     >     > >     >     >     >     > >     [enum int 
>   16   'CIPDataTypeCode' [uint 8  'size']
>     >     >     >     >     >     > >     >     >     >     > >         
> ['0X00C1'   BOOL            ['1']]
>     >     >     >     >     >     > >     >     >     >     > >         
> ['0X00CA'   REAL            ['4']]
>     >     >     >     >     >     > >     >     >     >     > >         
> ['0X00C4'   DINT            ['4']]
>     >     >     >     >     >     > >     >     >     >     > >         
> ['0X00C3'   INT             ['2']]
>     >     >     >     >     >     > >     >     >     >     > >         
> ['0X00C2'   SINT            ['1']]
>     >     >     >     >     >     > >     >     >     >     > >         
> ['0X02A0'   STRUCTURED      ['88']]
>     >     >     >     >     >     > >     >     >     >     > >         
> ['0X02A0'   STRING          ['88']]
>     >     >     >     >     >     > >     >     >     >     > >         
> ['0X02A0'   STRING36        ['40']]
>     >     >     >     >     >     > >     >     >     >     > >         ['-1' 
>       UNKNOWN         ['-1']]
>     >     >     >     >     >     > >     >     >     >     > >     ]
>     >     >     >     >     >     > >     >     >     >     > >     
>     >     >     >     >     >     > >     >     >     >     > >     
>     >     >     >     >     >     > >     >     >     >     > >     Thanks 
> for any help!
>     >     >     >     >     >     > >     >     >     >     > >     
>     >     >     >     >     >     > >     >     >     >     > >     Etienne 
>     >     >     >     >     >     > >     >     >     >     > >     On 
> 2020/03/10 15:18:47, Etienne Robinet <[email protected]> wrote: 
>     >     >     >     >     >     > >     >     >     >     > >     > Hi all,
>     >     >     >     >     >     > >     >     >     >     > >     > I've 
> managed to implement the EIP Session Register/Unregister (used for connected 
> message which is best for high frequency fetching). I will push it to my 
> branch and create a document explaining my steps.
>     >     >     >     >     >     > >     >     >     >     > >     > Next I 
> want to do was to to the CIP encapsulation part for accessing tag by their 
> name. The thing is, CIP is (from what I heard) proper to Allen Bradley. 
> Should I leave it in the EIP driver or modify and adapt the current AB driver 
> later on? For now I will continue on eip.
>     >     >     >     >     >     > >     >     >     >     > >     > 
>     >     >     >     >     >     > >     >     >     >     > >     > Etienne
>     >     >     >     >     >     > >     >     >     >     > >     > 
>     >     >     >     >     >     > >     >     >     >     > >     > On 
> 2020/03/10 14:41:42, Cesar Garcia <[email protected]> wrote: 
>     >     >     >     >     >     > >     >     >     >     > >     > > Hi,
>     >     >     >     >     >     > >     >     >     >     > >     > > 
>     >     >     >     >     >     > >     >     >     >     > >     > > You 
> can document the process step by step, you will surely find observation
>     >     >     >     >     >     > >     >     >     >     > >     > > 
> points.
>     >     >     >     >     >     > >     >     >     >     > >     > > 
>     >     >     >     >     >     > >     >     >     >     > >     > > I am 
> working with the handwritten S7 driver, but in the future I would
>     >     >     >     >     >     > >     >     >     >     > >     > > 
> support the team in migrate to mspec, so the experience you will gain with
>     >     >     >     >     >     > >     >     >     >     > >     > > the 
> Etheret / IP is very important.
>     >     >     >     >     >     > >     >     >     >     > >     > > 
>     >     >     >     >     >     > >     >     >     >     > >     > > Best 
> regards,
>     >     >     >     >     >     > >     >     >     >     > >     > > 
>     >     >     >     >     >     > >     >     >     >     > >     > > El 
> mar., 10 mar. 2020 a las 9:17, Christofer Dutz (<
>     >     >     >     >     >     > >     >     >     >     > >     > > 
> [email protected]>) escribió:
>     >     >     >     >     >     > >     >     >     >     > >     > > 
>     >     >     >     >     >     > >     >     >     >     > >     > > > Hi 
> Etienne,
>     >     >     >     >     >     > >     >     >     >     > >     > > >
>     >     >     >     >     >     > >     >     >     >     > >     > > > I 
> would strongly suggest you install the Antlr plugn for the IDE you use.
>     >     >     >     >     >     > >     >     >     >     > >     > > > The 
> problem is that ANTLR seems to gobble up a lot of errors and tries to
>     >     >     >     >     >     > >     >     >     >     > >     > > > be 
> smart in a lot of cases.
>     >     >     >     >     >     > >     >     >     >     > >     > > > 
> Whenever I have problems like this I use the ANTLR visual parser to parse
>     >     >     >     >     >     > >     >     >     >     > >     > > > a 
> block of mspec (one type at a time) and try to narrow down the cause.
>     >     >     >     >     >     > >     >     >     >     > >     > > >
>     >     >     >     >     >     > >     >     >     >     > >     > > > 
> Chris
>     >     >     >     >     >     > >     >     >     >     > >     > > >
>     >     >     >     >     >     > >     >     >     >     > >     > > >
>     >     >     >     >     >     > >     >     >     >     > >     > > >
>     >     >     >     >     >     > >     >     >     >     > >     > > > Am 
> 10.03.20, 13:31 schrieb "Etienne Robinet" <[email protected]>:
>     >     >     >     >     >     > >     >     >     >     > >     > > >
>     >     >     >     >     >     > >     >     >     >     > >     > > >     
> Hi all,
>     >     >     >     >     >     > >     >     >     >     > >     > > >     
> I've been struggling with implementing the EIP driver. I started
>     >     >     >     >     >     > >     >     >     >     > >     > > > 
> writing the mspec after creating both a module for the protocol and the one
>     >     >     >     >     >     > >     >     >     >     > >     > > > 
> from the driver. I copied and adapted the pom(s) from the AB-ETH but only
>     >     >     >     >     >     > >     >     >     >     > >     > > > the 
> enum is generated.
>     >     >     >     >     >     > >     >     >     >     > >     > > >     
> Here is a link to the forked branch:
>     >     >     >     >     >     > >     >     >     >     > >     > > > 
> https://github.com/etiennerobinet/plc4x/tree/eip
>     >     >     >     >     >     > >     >     >     >     > >     > > >
>     >     >     >     >     >     > >     >     >     >     > >     > > >     
> I've been studying the EIP/CIP protocol and now I am confident what
>     >     >     >     >     >     > >     >     >     >     > >     > > > the 
> packages should contain but I can not figure out how to generate this
>     >     >     >     >     >     > >     >     >     >     > >     > > > 
> with the templates. Am I missing something?
>     >     >     >     >     >     > >     >     >     >     > >     > > >
>     >     >     >     >     >     > >     >     >     >     > >     > > >     
> Etienne
>     >     >     >     >     >     > >     >     >     >     > >     > > >
>     >     >     >     >     >     > >     >     >     >     > >     > > >
>     >     >     >     >     >     > >     >     >     >     > >     > > >
>     >     >     >     >     >     > >     >     >     >     > >     > > 
>     >     >     >     >     >     > >     >     >     >     > >     > > -- 
>     >     >     >     >     >     > >     >     >     >     > >     > > *CEOS 
> Automatización, C.A.*
>     >     >     >     >     >     > >     >     >     >     > >     > > 
> *GALPON SERVICIO INDUSTRIALES Y NAVALES FA, C.A.,*
>     >     >     >     >     >     > >     >     >     >     > >     > > *PISO 
> 1, OFICINA 2, AV. RAUL LEONI, SECTOR GUAMACHITO,*
>     >     >     >     >     >     > >     >     >     >     > >     > > 
>     >     >     >     >     >     > >     >     >     >     > >     > > 
> *FRENTE A LA ASOCIACION DE GANADEROS,BARCELONA,EDO. ANZOATEGUI*
>     >     >     >     >     >     > >     >     >     >     > >     > > *Ing. 
> César García*
>     >     >     >     >     >     > >     >     >     >     > >     > > *Cel: 
> 0416-681.03.99*
>     >     >     >     >     >     > >     >     >     >     > >     > > 
>     >     >     >     >     >     > >     >     >     >     > >     > > *Cel: 
> 0414-760.98.95*
>     >     >     >     >     >     > >     >     >     >     > >     > > 
>     >     >     >     >     >     > >     >     >     >     > >     > > 
> *Hotline Técnica SIEMENS: 0800 1005080*
>     >     >     >     >     >     > >     >     >     >     > >     > > 
>     >     >     >     >     >     > >     >     >     >     > >     > > 
> *Email: [email protected]
>     >     >     >     >     >     > >     >     >     >     > >     > > 
> <[email protected]>*
>     >     >     >     >     >     > >     >     >     >     > >     > > 
>     >     >     >     >     >     > >     >     >     >     > >     > 
>     >     >     >     >     >     > >     >     >     >     > >     
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>     >     >     >     >     >     > >     >     >     
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>     >     >     >     >     >     
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