Out of curiosity, I’ve been testing an MB-GATEWAY to see if it would allow us to connect to serial Modbus devices using Ignition’s Modbus v2 Driver. Here is what I’ve discovered.
If I set the Modbus address of the PLC to 1, I can shoot straight through and pull data. Easy as pie. What I’m trying to figure out now is, being that the MB-GATEWAY uses RS-422/485 and can support up to 128 serial devices at a time, how do I go about addressing the individual devices on the serial side?
KEPServer allows you to add the Slave address to the end of the IP address (ex: 192.168.1.250.15), which tunnels through and see the additional slaves (I just tested this and confirms that it works.) Is there an option to do something like this in Ignition and I just overlooked it, or am I out of luck on that part. Thanks!