comm error

[full time 0]

While trying to connect to a cpu 434-12a 486 controller i get an error code message ol9-1672 ,however if I look at lower right hand coner it says " established connection to controller ".

[Crossbow 295]

More infor like what software package you're using would help. Did you try the manuals for the software? They should have a list of error code info.