Rafe Posted September 5, 2019 Report Share Posted September 5, 2019 Hi I am trying to connect a 350 PLC with Inductive Automation's Ignition SCADA using Ignition's Modbus TCP driver. The PLC program image is attached. I do get a connection established in the Ignition software to the PLC but I can't read any tags. The following are all the settings I have in the Ignition SCADA I have tried Ignition's Modbus TCP, Ignition's Modbus RTU over TCP, Kepware's Modbus TCP driver all to no avail. I already have 2 other PLCs connected to the SCADA system via modbus TCP so I know that the Ignition's Modbus Drivers work. PLC program is also attached. Please advise. Kind Regards Rafe MOdbusTCP.vlp Quote Link to comment Share on other sites More sharing options...
AlexUT Posted September 5, 2019 Report Share Posted September 5, 2019 Rafe, Test MODBUS TCP communication first by well known MODBUS Client. You can use Chipkin CAS Modbus Scanner. Check Slave Addressing in VisiLogic Help. If this test pass - test SCADA. B.R. Quote Link to comment Share on other sites More sharing options...
MVP 2022 Ausman Posted September 5, 2019 MVP 2022 Report Share Posted September 5, 2019 Set the SB168 power up value to 1, like the program check is telling you to do. This may or may not help in this particular instance, but needs to be done to ensure continuity of comms. cheers, Aus Quote Link to comment Share on other sites More sharing options...
MVP 2022 Flex727 Posted September 5, 2019 MVP 2022 Report Share Posted September 5, 2019 I know from experience that the Ignition software will work with a V1210 using MODBUS TCP. I don't see anything in your posts where you show the register addresses you're trying to read. Quote Link to comment Share on other sites More sharing options...
Rafe Posted September 5, 2019 Author Report Share Posted September 5, 2019 Got it going using the following information Quote Link to comment Share on other sites More sharing options...
MVP 2022 Flex727 Posted September 5, 2019 MVP 2022 Report Share Posted September 5, 2019 For Holding Registers, add 40,001 to the MI address in VisiLogic. In other words, if you're trying to read MI 123, the Holding Register read address in Ignition should be 40124. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
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.