Hi, I am trying to pull the correct information from my AB7629-F gateway with my Productivity 2000 PLC. I believe the PLC should act as a Master with Modbus-TCP and the gateway a slave. On the other side of the gateway, it’s connected to a Lakeshore 240 Temperature device. I have successfully established connection between the two over Profibus, as shown:
On the PLC side, I have configured the setup as follows:
Based on this, I assume I am getting some kind of data (I’ve unplugged the gateway from the system and these numbers go to 0 in every row):
I don’t know how the gateway stores the incoming temperature information, and thus how to extract it using the Modbus register commands. I’m using a Modbus Read command right now on the PLC. Do I need to use a Write command, then a Read command? Do I need to configure other gateway or PLC settings?
Any help to fill in the blanks is much appreciated!
