Patent ID: 8184417

Claim:
An input termination device for use in a safety system, the safety system having at least one industrial controller, a first input module, a second input module, and an output module, the input termination device comprising: a circuit board; at least one terminal block mounted on the circuit board having at least one first pair of terminals and at least one second pair of terminals, each pair of terminals configured to accept an analog input signal from a remote device; a first input module connector mounted on the circuit board configured to transmit the analog input signals from the first pair of terminals to the first input module; a second input module connector mounted on the circuit board configured to selectively transmit the analog input signals from either the first pair of terminals or the second pair of terminals to the second input module; and a selection means for connecting either the analog input signals or a fixed reference signal to each of the first and second input module connectors according to a signal from the output module.