Hi Ralf,
I checked again with etherlab master. It looks my devices support it.
Then I checked from Beckoff site: I downloaded "EL20xx_EL2124en.chm"
from, http://www.beckhoff.com/english.asp?download/elconfg.htm.
In the "Basic Communication" -> "Distributed Clock" section it suggests
these devices support DC. But it is not so clear.
I also downloaded the EL2xxx.xml with Beckhoff_EtherCAT_XML.zip.
There is no <AssignActivate> section for EL2008. But it does have this
section for some other devices.
I also checked EK1100 from the xml files. There is no <assignActivate>
section for it either. But I remember that some users of the list using
this device as the reference clock.
What am I missing?
Best regards,
(and selamlar :) )
Oguz.
By the way, here is the information I get from ethercat master:
When I type:
ethercat slaves -v
I get:
=== Master 0, Slave 0 ===
State: PREOP
Flag: +
Identity:
Vendor Id: 0x00000002
Product code: 0x044c2c52
Revision number: 0x00110000
Serial number: 0x00000000
DL information:
FMMU bit operation: no
Distributed clocks: yes, 64 bit
DC system time transmission delay: 0 ns
Port Type Link Loop Signal NextSlave RxTime [ns] Diff [ns] NextDc [ns]
0 MII up open yes - 1281615183 0 0
1 EBUS up open yes 1 1281615783 600 145
2 MII down closed no - - - -
3 N/A down closed no - - - -
General:
Group: SystemBk
Image name:
Order number: EK1100
Device name: EK1100 EtherCAT-Koppler (2A E-Bus)
Flags:
Enable SafeOp: no
Enable notLRW: no
Current consumption: -2000 mA
=== Master 0, Slave 1 ===
State: PREOP
Flag: +
Identity:
Vendor Id: 0x00000002
Product code: 0x07d83052
Revision number: 0x00100000
Serial number: 0x00000000
DL information:
FMMU bit operation: no
Distributed clocks: yes, 64 bit
DC system time transmission delay: 145 ns
Port Type Link Loop Signal NextSlave RxTime [ns] Diff [ns] NextDc [ns]
0 EBUS up open yes 0 1299932986 0 145
1 EBUS up open yes 2 1299933296 310 155
2 N/A down closed no - - - -
3 N/C down closed no - - - -
General:
Group: DigOut
Image name:
Order number: EL2008
Device name: EL2008 8K. Dig. Ausgang 24V, 0.5A
Flags:
Enable SafeOp: no
Enable notLRW: no
Current consumption: 110 mA
=== Master 0, Slave 2 ===
State: PREOP
Flag: +
Identity:
Vendor Id: 0x00000002
Product code: 0x03f03052
Revision number: 0x00100000
Serial number: 0x00000000
DL information:
FMMU bit operation: no
Distributed clocks: yes, 64 bit
DC system time transmission delay: 300 ns
Port Type Link Loop Signal NextSlave RxTime [ns] Diff [ns] NextDc [ns]
0 EBUS up open yes 1 1311888425 0 155
1 EBUS down closed no - - - -
2 N/A down closed no - - - -
3 N/C down closed no - - - -
General:
Group: DigIn
Image name: TERM_DI
Order number: EL1008
Device name: EL1008 8K. Dig. Eingang 24V, 3ms
Flags:
Enable SafeOp: no
Enable notLRW: no
Current consumption: 90 mA
03.07.2012 17:05 tarihinde, Ralf Roesch yazdı:
Oguz,
I don't think that the EL2008 supports DC.
You can check it with the
ethercat slaves -pXXX -v
I have a EL2004 which shows:
ethercat slaves -p3 -v
...
DL information:
FMMU bit operation: no
Distributed clocks: no
...
If you have a DC-capable Module you can find the <AssignActivate> mode
in the ESI-File (XML).
You would find it in the EL2xxx.xml - File from Beckhoff if it would
support DC.
selamlar
Ralf
On Tue Jul 03 2012 15:27:41 GMT+0200, Oguz Dilmac
<[email protected]> wrote:
Hi,
I want to use Distrubuted Clocks.
And to test it, I want to create a square wave on one of the digital
outputs and watch it on an ossiloscope to see the jitter.
I'm using RTAI with kernel modules.
I looked to the dc_rtai_sample.c.
I don't have an IDS counter. But I have an EK1100 and EL2008
How can I modify the sample code to activate DC on EK1100 and EL2008
I know they support DC. But I don't know what to write to
"assignActivate" code.
Best regards,
Oguz.
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