Gents,
I have an application developed in a V570. I have basic Modbus TCP comms up and running. I am able to remotely monitor and control all 'MI' points in my program but I am having trouble getting any 'MB's to work at all. I have used the help doc to calculate the external MB offset. (Can be found at: Communications\Communication FBs\Modbus IP\Read Imputs then click the link to 'Slave Address Tables')
This should be simple as the offset is quite simply 30001 + MB Addr. For example I am trying to monitor MB3107 wich maps to 33108 as an external MB addr. However this entire range is dead when monitoring from my Modbus OPC server. At least this is the way I understand it from the doc.
I am also having the same problem with reading O and I directly.
Any help would be much appreciated.
