Hello,
as a complete newbie in Java, S7 and PLC4X it does not help - if I have to get
some data from a Siemens-PLC. We decided to use PLC4X and as always there can
occur some little problems. Now I am involved in using PLC4X for about one week.
Ok let me first say what I use at the moment:
* Java 11 64-Bit-Version on Intel (Windows 10) and Arm-System (Debian)
* PLC4X version 0.9.0 (but I tested in this case 0.10.0-SNAPSHOT, too)
* Siemens S7-300, S7-1500 (Software-PLC) and hopefully some more types in
the next weeks
As preparation for more functionality I created an ugly short test program,
which does some reading out of a data block. This is really running fine an I
was surprised to get to this point in really a short time. So I think that the
PLC4X is a well kind of stuff.
To improve at second the reading of data out of the PLC I tried to use the
possibility of 'subscription' - unfortunately this has been without success the
last 2 days. So I decided to ask what I am doing wrong.
As an attachment there are some more information to be found as pictures and
some text parts.
Explanation:
I try to establish a subscription request by doing the builder and execute the
request afterwards (attachment Source_SubscriptionRequest.txt):
// Create a new subscription request cyclic mode only !
PlcSubscriptionRequest.Builder builder =
plcConnection.subscriptionRequestBuilder();
for (String searchName : deviceData.dataMap.keySet()) {
switch (deviceData.getSubscriptionType(searchName)) {
case "CYCLIC": {
builder.addCyclicField(searchName,
deviceData.getDataPlaceAndType(searchName),
Duration.ofMillis(Integer.valueOf(deviceData.getSubscriptionTime(searchName))));
};break;
case "ONCHANGE": {
// TODO add onchange subscription builder
};break;
case "ONEVENT": {
// TODO add onevent subscription builder
};break;
default: {
};break;
}
}
// finalize the subscription builder
PlcSubscriptionRequest subscriptionRequest = builder.build();
// activate the subscriptions now (here it doesn't matter if you use the
synchronize or asynchronize approach)
PlcSubscriptionResponse plcSubscriptionResponse =
subscriptionRequest.execute().get(20, TimeUnit.SECONDS);
// PlcSubscriptionResponse plcSubscriptionResponse =
subscriptionRequest.execute().get();
// PlcSubscriptionResponse plcSubscriptionResponse =
subscriptionRequest.execute().get(5000, TimeUnit.MILLISECONDS);
The 'deviceData'-class contains all configuration values which are read out of
a very simple properties-file. The picture 'Debug_BuilderInfo.PNG' shows the
content of the two entries and I think they are OK so far.
The property-file contains these information about the entries:
# data address is the physical address inside the plc and the type
data_set_001=TEST_BIT0|%DB100:0.0:BOOL|BOOL|CYCLIC|333
data_set_002=TEST_BIT1|%DB100:0.1:BOOL|BOOL|CYCLIC|444
The fieldname in the first line will be later 'TEST_BIT0' the address and type
will be '%DB100:0.0:BOOL' it should be a cyclic mode 'CYCLIC' and the cycle
time should be '333' [ms]. The other values in the line are not used inside the
program (maybe later but not now).
Unfortunately this will lead me to an error I can't resolve now. (the out is
the attachment Console_OutputOnError.txt)
"C:\Program Files\Java\openjdk-11.0.8.10-2.windows.redhat.x86_64\bin\java.exe"
-agentlib:jdwp=transport=dt_socket,address=127.0.0.1:50521,suspend=y,server=n
-Dplc_name=KoehlInhouseTestSPS
-javaagent:D:\Programme\IntelliJ_IDEA_2019.3.4\plugins\java\lib\rt\debugger-agent.jar
-Dfile.encoding=UTF-8 -classpath
D:\projekte\entwicklung\test-plc-subscription\target\classes;D:\projekte\entwicklung\.m2\spring_repository\org\apache\plc4x\plc4j-api\0.9.0\plc4j-api-0.9.0.jar;D:\projekte\entwicklung\.m2\spring_repository\com\fasterxml\jackson\core\jackson-annotations\2.12.5\jackson-annotations-2.12.5.jar;D:\projekte\entwicklung\.m2\spring_repository\org\apache\plc4x\plc4j-driver-s7\0.9.0\plc4j-driver-s7-0.9.0.jar;D:\projekte\entwicklung\.m2\spring_repository\org\apache\plc4x\plc4j-spi\0.9.0\plc4j-spi-0.9.0.jar;D:\projekte\entwicklung\.m2\spring_repository\io\netty\netty-codec\4.1.67.Final\netty-codec-4.1.67.Final.jar;D:\projekte\entwicklung\.m2\spring_repository\io\netty\netty-common\4.1.67.Final\netty-common-4.1.67.Final.jar;D:\projekte\entwicklung\.m2\spring_repository\commons-beanutils\commons-beanutils\1.9.4\commons-beanutils-1.9.4.jar;D:\projekte\entwicklung\.m2\spring_repository\commons-logging\commons-logging\1.2\commons-logging-1.2.jar;D:\projekte\entwicklung\.m2\spring_repository\commons-collections\commons-collections\3.2.2\commons-collections-3.2.2.jar;D:\projekte\entwicklung\.m2\spring_repository\com\fasterxml\jackson\core\jackson-core\2.12.5\jackson-core-2.12.5.jar;D:\projekte\entwicklung\.m2\spring_repository\com\fasterxml\jackson\core\jackson-databind\2.12.5\jackson-databind-2.12.5.jar;D:\projekte\entwicklung\.m2\spring_repository\com\github\jinahya\bit-io\1.4.3\bit-io-1.4.3.jar;D:\projekte\entwicklung\.m2\spring_repository\org\apache\plc4x\plc4j-transport-tcp\0.9.0\plc4j-transport-tcp-0.9.0.jar;D:\projekte\entwicklung\.m2\spring_repository\commons-codec\commons-codec\1.15\commons-codec-1.15.jar;D:\projekte\entwicklung\.m2\spring_repository\io\netty\netty-buffer\4.1.67.Final\netty-buffer-4.1.67.Final.jar;D:\projekte\entwicklung\.m2\spring_repository\io\netty\netty-transport\4.1.67.Final\netty-transport-4.1.67.Final.jar;D:\projekte\entwicklung\.m2\spring_repository\io\netty\netty-resolver\4.1.67.Final\netty-resolver-4.1.67.Final.jar;D:\projekte\entwicklung\.m2\spring_repository\io\vavr\vavr\0.10.4\vavr-0.10.4.jar;D:\projekte\entwicklung\.m2\spring_repository\io\vavr\vavr-match\0.10.4\vavr-match-0.10.4.jar;D:\projekte\entwicklung\.m2\spring_repository\org\slf4j\slf4j-api\2.0.0-alpha1\slf4j-api-2.0.0-alpha1.jar;D:\projekte\entwicklung\.m2\spring_repository\org\apache\commons\commons-lang3\3.12.0\commons-lang3-3.12.0.jar;D:\Programme\IntelliJ_IDEA_2019.3.4\lib\idea_rt.jar
de.koehl.plc_adapter.TestPlcAdapter
d:\projekte\entwicklung\test-plc-subscription\plc_data_s300.txt
Connected to the target VM, address: '127.0.0.1:50521', transport: 'socket'
Using parameter value for path to ini files:
d:\projekte\entwicklung\test-plc-subscription\plc_data_s300.txt
PLC : KoehlInhouseTestSPS
SLF4J: No SLF4J providers were found.
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#noProviders for further details.
Connection established to:
s7://172.16.10.10?controller-type=S7_300&remote-rack=0&remote-slot=2
PLC with connection:
s7://172.16.10.10?controller-type=S7_300&remote-rack=0&remote-slot=2 is able to
be read !
PLC with connection:
s7://172.16.10.10?controller-type=S7_300&remote-rack=0&remote-slot=2 is able to
be written !
PLC with connection:
s7://172.16.10.10?controller-type=S7_300&remote-rack=0&remote-slot=2 is able to
do subscriptions !
PLC with connection:
s7://172.16.10.10?controller-type=S7_300&remote-rack=0&remote-slot=2 is not
able to do browsing !
Value could not be read!
java.lang.ClassCastException: class
org.apache.plc4x.java.s7.readwrite.field.S7Field cannot be cast to class
org.apache.plc4x.java.s7.readwrite.field.S7SubscriptionField
(org.apache.plc4x.java.s7.readwrite.field.S7Field and
org.apache.plc4x.java.s7.readwrite.field.S7SubscriptionField are in unnamed
module of loader 'app')
Number of threads starting was: 1
Number of threads on ending was: 4
java.lang.ClassCastException: class
org.apache.plc4x.java.s7.readwrite.field.S7Field cannot be cast to class
org.apache.plc4x.java.s7.readwrite.field.S7SubscriptionField
(org.apache.plc4x.java.s7.readwrite.field.S7Field and
org.apache.plc4x.java.s7.readwrite.field.S7SubscriptionField are in unnamed
module of loader 'app')
at
org.apache.plc4x.java.s7.readwrite.protocol.S7ProtocolLogic.subscribe(S7ProtocolLogic.java:335)
at
org.apache.plc4x.java.spi.optimizer.BaseOptimizer.lambda$optimizedSubscribe$4(BaseOptimizer.java:121)
at
org.apache.plc4x.java.spi.optimizer.BaseOptimizer.send(BaseOptimizer.java:139)
at
org.apache.plc4x.java.spi.optimizer.BaseOptimizer.optimizedSubscribe(BaseOptimizer.java:121)
at
org.apache.plc4x.java.spi.connection.AbstractPlcConnection.subscribe(AbstractPlcConnection.java:167)
at
org.apache.plc4x.java.spi.messages.DefaultPlcSubscriptionRequest.execute(DefaultPlcSubscriptionRequest.java:61)
at
de.koehl.plc_adapter.TestPlcAdapter.readTestPlc(TestPlcAdapter.java:129)
at de.koehl.plc_adapter.TestPlcAdapter.main(TestPlcAdapter.java:57)
Disconnected from the target VM, address: '127.0.0.1:50521', transport: 'socket'
Process finished with exit code 0
As a further step to get more information I did some debugging at the line
where the exception crashes my code.
Just look at the attached pictures, where you can see the content of the
subscription request.
I switched to the PLC4X version 0.10.0-SNAPSHOT but this creates exactly the
same situation - no difference to version 0.9.0
Does anybody proposals how to solve this ? Or maybe - I do something wrong but
I don't recognize what.
Mit freundlichen Grüßen / Best regards
Dipl.-Ing. (FH)
Guido Rennert
Software Engineering
Logistic & Information Systems
Phone:
+352 27 68 27 - 3650
E-Mail:
guido.renn...@koehl-mb.eu<mailto:guido.renn...@koehl-mb.eu>
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// Create a new subscription request cyclic mode only !
PlcSubscriptionRequest.Builder builder =
plcConnection.subscriptionRequestBuilder();
for (String searchName : deviceData.dataMap.keySet()) {
switch (deviceData.getSubscriptionType(searchName)) {
case "CYCLIC": {
builder.addCyclicField(searchName,
deviceData.getDataPlaceAndType(searchName),
Duration.ofMillis(Integer.valueOf(deviceData.getSubscriptionTime(searchName))));
};break;
case "ONCHANGE": {
// TODO add onchange subscription builder
};break;
case "ONEVENT": {
// TODO add onevent subscription builder
};break;
default: {
};break;
}
}
// finalize the subscription builder
PlcSubscriptionRequest subscriptionRequest = builder.build();
// activate the subscriptions now (here it doesn't matter if you
use the synchronize or asynchronize approach)
PlcSubscriptionResponse plcSubscriptionResponse =
subscriptionRequest.execute().get(20, TimeUnit.SECONDS);
// PlcSubscriptionResponse plcSubscriptionResponse =
subscriptionRequest.execute().get();
// PlcSubscriptionResponse plcSubscriptionResponse =
subscriptionRequest.execute().get(5000, TimeUnit.MILLISECONDS);
"C:\Program Files\Java\openjdk-11.0.8.10-2.windows.redhat.x86_64\bin\java.exe"
-agentlib:jdwp=transport=dt_socket,address=127.0.0.1:50521,suspend=y,server=n
-Dplc_name=KoehlInhouseTestSPS
-javaagent:D:\Programme\IntelliJ_IDEA_2019.3.4\plugins\java\lib\rt\debugger-agent.jar
-Dfile.encoding=UTF-8 -classpath
D:\projekte\entwicklung\test-plc-subscription\target\classes;D:\projekte\entwicklung\.m2\spring_repository\org\apache\plc4x\plc4j-api\0.9.0\plc4j-api-0.9.0.jar;D:\projekte\entwicklung\.m2\spring_repository\com\fasterxml\jackson\core\jackson-annotations\2.12.5\jackson-annotations-2.12.5.jar;D:\projekte\entwicklung\.m2\spring_repository\org\apache\plc4x\plc4j-driver-s7\0.9.0\plc4j-driver-s7-0.9.0.jar;D:\projekte\entwicklung\.m2\spring_repository\org\apache\plc4x\plc4j-spi\0.9.0\plc4j-spi-0.9.0.jar;D:\projekte\entwicklung\.m2\spring_repository\io\netty\netty-codec\4.1.67.Final\netty-codec-4.1.67.Final.jar;D:\projekte\entwicklung\.m2\spring_repository\io\netty\netty-common\4.1.67.Final\netty-common-4.1.67.Final.jar;D:\projekte\entwicklung\.m2\spring_repository\commons-beanutils\commons-beanutils\1.9.4\commons-beanutils-1.9.4.jar;D:\projekte\entwicklung\.m2\spring_repository\commons-logging\commons-logging\1.2\commons-logging-1.2.jar;D:\projekte\entwicklung\.m2\spring_repository\commons-collections\commons-collections\3.2.2\commons-collections-3.2.2.jar;D:\projekte\entwicklung\.m2\spring_repository\com\fasterxml\jackson\core\jackson-core\2.12.5\jackson-core-2.12.5.jar;D:\projekte\entwicklung\.m2\spring_repository\com\fasterxml\jackson\core\jackson-databind\2.12.5\jackson-databind-2.12.5.jar;D:\projekte\entwicklung\.m2\spring_repository\com\github\jinahya\bit-io\1.4.3\bit-io-1.4.3.jar;D:\projekte\entwicklung\.m2\spring_repository\org\apache\plc4x\plc4j-transport-tcp\0.9.0\plc4j-transport-tcp-0.9.0.jar;D:\projekte\entwicklung\.m2\spring_repository\commons-codec\commons-codec\1.15\commons-codec-1.15.jar;D:\projekte\entwicklung\.m2\spring_repository\io\netty\netty-buffer\4.1.67.Final\netty-buffer-4.1.67.Final.jar;D:\projekte\entwicklung\.m2\spring_repository\io\netty\netty-transport\4.1.67.Final\netty-transport-4.1.67.Final.jar;D:\projekte\entwicklung\.m2\spring_repository\io\netty\netty-resolver\4.1.67.Final\netty-resolver-4.1.67.Final.jar;D:\projekte\entwicklung\.m2\spring_repository\io\vavr\vavr\0.10.4\vavr-0.10.4.jar;D:\projekte\entwicklung\.m2\spring_repository\io\vavr\vavr-match\0.10.4\vavr-match-0.10.4.jar;D:\projekte\entwicklung\.m2\spring_repository\org\slf4j\slf4j-api\2.0.0-alpha1\slf4j-api-2.0.0-alpha1.jar;D:\projekte\entwicklung\.m2\spring_repository\org\apache\commons\commons-lang3\3.12.0\commons-lang3-3.12.0.jar;D:\Programme\IntelliJ_IDEA_2019.3.4\lib\idea_rt.jar
de.koehl.plc_adapter.TestPlcAdapter
d:\projekte\entwicklung\test-plc-subscription\plc_data_s300.txt
Connected to the target VM, address: '127.0.0.1:50521', transport: 'socket'
Using parameter value for path to ini files:
d:\projekte\entwicklung\test-plc-subscription\plc_data_s300.txt
PLC : KoehlInhouseTestSPS
SLF4J: No SLF4J providers were found.
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#noProviders for further details.
Connection established to:
s7://172.16.10.10?controller-type=S7_300&remote-rack=0&remote-slot=2
PLC with connection:
s7://172.16.10.10?controller-type=S7_300&remote-rack=0&remote-slot=2 is able to
be read !
PLC with connection:
s7://172.16.10.10?controller-type=S7_300&remote-rack=0&remote-slot=2 is able to
be written !
PLC with connection:
s7://172.16.10.10?controller-type=S7_300&remote-rack=0&remote-slot=2 is able to
do subscriptions !
PLC with connection:
s7://172.16.10.10?controller-type=S7_300&remote-rack=0&remote-slot=2 is not
able to do browsing !
Value could not be read!
java.lang.ClassCastException: class
org.apache.plc4x.java.s7.readwrite.field.S7Field cannot be cast to class
org.apache.plc4x.java.s7.readwrite.field.S7SubscriptionField
(org.apache.plc4x.java.s7.readwrite.field.S7Field and
org.apache.plc4x.java.s7.readwrite.field.S7SubscriptionField are in unnamed
module of loader 'app')
Number of threads starting was: 1
Number of threads on ending was: 4
java.lang.ClassCastException: class
org.apache.plc4x.java.s7.readwrite.field.S7Field cannot be cast to class
org.apache.plc4x.java.s7.readwrite.field.S7SubscriptionField
(org.apache.plc4x.java.s7.readwrite.field.S7Field and
org.apache.plc4x.java.s7.readwrite.field.S7SubscriptionField are in unnamed
module of loader 'app')
at
org.apache.plc4x.java.s7.readwrite.protocol.S7ProtocolLogic.subscribe(S7ProtocolLogic.java:335)
at
org.apache.plc4x.java.spi.optimizer.BaseOptimizer.lambda$optimizedSubscribe$4(BaseOptimizer.java:121)
at
org.apache.plc4x.java.spi.optimizer.BaseOptimizer.send(BaseOptimizer.java:139)
at
org.apache.plc4x.java.spi.optimizer.BaseOptimizer.optimizedSubscribe(BaseOptimizer.java:121)
at
org.apache.plc4x.java.spi.connection.AbstractPlcConnection.subscribe(AbstractPlcConnection.java:167)
at
org.apache.plc4x.java.spi.messages.DefaultPlcSubscriptionRequest.execute(DefaultPlcSubscriptionRequest.java:61)
at
de.koehl.plc_adapter.TestPlcAdapter.readTestPlc(TestPlcAdapter.java:129)
at de.koehl.plc_adapter.TestPlcAdapter.main(TestPlcAdapter.java:57)
Disconnected from the target VM, address: '127.0.0.1:50521', transport: 'socket'
Process finished with exit code 0
