M340 support Remote IO

[Noman]

Hi Everyone,

I have inquiry regarding remote IO. Does the M340 support Ethernet Remote IO? I checked it don't. Is there  any other method to do it kindly guide me 

[AlastairF]

No the M340 does not support eRIO.

If you want to use X80 IO remotely from M340 then you need to use the BMXPRA0100 module in place of the CRA module.

Detailed in this manual:

https://www.se.com/ww/en/download/document/EIO0000000510/?searchSource=guided

[dnordenberg1]

It depends on what type of remote IO you want to use. Modbus TCP remote IO works fine. If you have a CPU with etherbet port you must use READ_VAR/WRITE_VAR function blocks to access it which can be a bit messy. If you have a BMXNOE ethernet card you can use it's built in IO scanning table to just add the IP and the registers you want to exchange in there. This is then handled by the processor in the NOE card so it can poll very fast and it offloads the main CPU from doing Modbus TCP exchange. Only drawback with the IO scanner is that it supports only reading/writing holding registers, any other types has to be done with READ_VAR/WRITE_VAR function blocks (these can be used on a NOE card to, not limited to the CPU port). There is also a ethernet card that can do Ethernet/IP but it is better to use a M580 for that which have this built in, ethernet cards are not cheep so buying a M580 CPU might even cost less than a M340 plus a ethernet card.