Barry Posted December 20, 2018 Report Share Posted December 20, 2018 Good morning everyone! We are about to begin work on a Modbus deployment that will need far more than just the 255 addresses available on the built in CPU master. I know we can add up to three of the UAC-02RSC UniComm modules for three more masters. Unfortunately, the masters on the 02RSC have a limit of 512 operations each, so we’re going to need all three modules and then some. I’m interested in using the serial port on the top of those modules as well. Unilogic and the built-in help file shows that we can turn them into Modbus masters, but we’re not having any success getting it to communicate with our sensors and devices. We’re using a small header-to-terminal block plug to give us access to pins two and three (TX and RX) but I’m not sure that’s correct for what we’re doing here. Thank you in advance for any help you can give us on the serial connection! Quote Link to comment Share on other sites More sharing options...
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.