PING between PLC's

[jaccov 0]

Is it possible that I can ping between a couple of CJ1 PLC's from the PLC software. So I want to check the network connection with other machine's. I want also check accespoints, PC, etc. Edited 18 Feb 2009 by jaccov

[scottmurphy 1]

Standard practice would be to create some sort of 'heartbeat'. Depending on the type of connections between the PLC's, there is more than likely built in functions to tell you the status of the other machines.

[PdL 71]

The EIP21 unit can initiate and respond a ICMP echo (PING) command, the ETN21 can only respond. Like Scott says if you want to check connections between Omron hosts you can create a heartbeat with SEND/RCV commands which uses native Omron FINS protocol. The EIP interface has built in node status information that you can utilize in your ladder code. To connect to non-Omron devices on a network you can use socket services (mind not all ETN units support this). Perhaps you can provide some more information about the particular ethernet unit models and what exactly you want to do.