Do More and remote I/O

[Henryp]

Hi,
I have never created a remote I/O rack before. If I have a D2 base, I/O and a H2-ERM100 is that one way of creating Modbus remote I/O. Can more than one Do More talk to the same remote I/O rack? Can my SCADA software talk the Modbus protocol directly to the remote I/O rack? Thanks

[BobO]

When we refer to "remote I/O", we are generally meaning a remote I/O master talking to a base with an EBC100 or a drive with an EDRV100. When used with an EBC100/EDRV100, I/O can only be controlled by one I/O master. I/O masters are either ERM100 or Do-more's built-in remote master.

If you are not using an ERM or Do-more's built-in master, either EBC100 or EDRV100 can be accessed by Modbus/TCP, and yes, more than one device can access it.

I would *not* have more than one device attempting to write the remote I/O. My preferred implementation would be to use Do-more's I/O master, and then have other devices get information from the Do-more controller itself via Modbus/TCP, rather than trying to talk to the I/O.

[Garyhlucas]

We are getting ready to do a job with two BRXs one which runs the waste treatment plant and another that runs the headworks which is a slave.  They are connected by Ethernet. What protocol gets used for this?  Is modbus the best way to go or is there a specific Do-More method?

[BobO]

Between Do-more units? Either RX/WX or PEERLINK.