I already created the tags for my PLC in VTScada. I am trying to pull the digital status of a device in my system. First I was using Y memory bit, the digital status can be pulled correctly, I can see a value 1 shown on the Tag when that device was on. The Y memory bit address and function code are attached.
Then, I changed the Y memory to C memory bit, the device is still working well. However, after I change the Modbus address to the specific C memory bit, VTScada can no longer read the digital status of the device. There is no number appear on the value column. I attached a picture of my PLC Modbus address and function code for C memory bit below:
Anyone know what is the reason that I cannot pull the digital status of the C memory bit?
Really appreciate any help!