11-14-2013 03:54 AM
Hi There,
I am trying to talk to a MODBUS device via ethernet using a GE Multinet - ethernet to serial converter. I can establish the TCP connection but when I try to "read holding registers" using "MB ethernet Master query read holding registers (poly).vi" I get an error code of 6011, exception code 11.
I can read and write to and from the MODBUS device using other software so I know the hardware is configured and connected correctly.
Does anyone have any suggestions as to what may be going wrong here?
Regards,
Sean.
11-21-2013 01:01 AM - edited 11-21-2013 01:02 AM
I'd suggest to use wireshark to monitor what's being sent and received to/from the MODBUS device.
I think the problem is due to the fact the you are using the Ethernet vi but the interface on the device is serial.
In the past I had to slightly modify the vi in order to use it with a converter.
Regards,
Marco
11-21-2013 09:38 AM
Thanks Marco, I appreciate your advice.
Any chance of seeing the code changes you made?
Regards,
Sean.
11-22-2013 12:49 AM
Sorry Sean but at the moment I don't have access to that code. 😕
Marco
01-02-2014 07:08 AM
Did you solve this problem?