ABB Single loop controllers and Freelance
Can any one share if you connected a single loop controller for example CM50 with Freelance or other control system?
what was the use case? and what type of connection was used?
just with I/O? or via Modbus?
Voted best answer
I have made the most basic connection where I have a process signal connected to the CM50 and I am retransmitting the value via analog output on the CM50 to be able to see it on the DigiVis. In addition there is one digital signal forcing the CM50 to be in remote setpoint mode and also the setpoint from freelance is transmitted via 4-20mA to the CM50
This is very basic set-up where the PID loop is running in the CM50 and not in freelance.
the advantage is that operator can go to the process and see the values locally and take controll locally as well.
I wonder about other usecases and tested conectivity
I am interested in CM50 SLC communication with freelance over Modbus to RW various status signals and measurement values. As per manual some addresses of input coils and output coils are same. Don’t know what is offset here? Hence until integrated SLC in real time with freelance over Modbus can’t be actualize correct addresses. Attached here with CM50 modbus addresses. Pls share your project csv file if you integrate SLC with freelance over Modbus.