Jerry Posted July 27, 2017 Report Share Posted July 27, 2017 I'm brand new to Unitronics. I inherited an existing V1040 and am trying to add a SCADA which communicates via KEPServerEX 6 (Modbus TCP/IP). The logic in the PLC looks good to support the Modbus TCP/IP (socket 2, TCP 502) but I have no communication. A ping to the V1040 is good. Any have any suggestions or hints? Link to comment Share on other sites More sharing options...
MVP 2023 Flex727 Posted July 27, 2017 MVP 2023 Report Share Posted July 27, 2017 Is the V1040 Socket 2 set up as a TCP/IP Slave? Is there a ScanEX function block being executed on every PLC scan? Check the Ethernet-related System Bits SB 141-SB 158 and the System Integers SI 141-SI 148 while online with the PLC to see if there is anything out of order. When you pinged, did you ping to Port 502? Link to comment Share on other sites More sharing options...
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