Can I ping from PLC?

[digispark 0]

Hi All, Is there a function in OMRON EIP/ETN cards to ping another device? I have a RTU telemetry on RS232 to the OMRON, and then out to a series of Ethernet connected devices, VSD, Ethernet Switch, HMIs, etc... RTU should send out alarms if any Ethernet device is 'offline'. Instead of writing send/receiving life word/bit functions to those devices, can I use a ping command (from PLC) to check if they are 'alive' on the network? Thanks! Edited 16 Jul 2013 by digispark

[Michael Walsh 268]

Yes you can. You would use a 2720 FINS command. Section 7-3-18 describes the details of this command in the manual below: http://forums.mrplc.com/index.php?app=downloads&showfile=478 Section 6 describes how to execute this command including details on the SEND, RECV and CMND instructions.

[Jay Anthony 118]

I can't tell you how many times I have studied the FINS Command list and still missed this one. Duh!

[Michael Walsh 268]

I was not sure, I had to go look it up. I have not had anyone ask me that before.