I have a siemens plc polling data over serial from a gage. values coming into PLC are in “char” data type. I had initially set up a transaction group using Siemens OPC DA server and had an item.
The above polling would return value: abc.d which was perfect.
Now, for the same machine, I am trying using OPC UA module. I added the plc from OPC UA Devices list and it shows it is connected. I add an item with the path:
The field for value shows " N/A".
I tried diff combinations
I can always use DA server but I will be installing the same in other plants. I do not want to install those Siemens OPC softwares when I have easy UA server access.
Any help would be greatly appreciated.