The NC B Series Controller is equipped with one set of external EMG signal inputs at the CN1 connector. When wiring, you need to change the (Emergency Stop Contactor Source BIT) in the Emergency Stop Signal and set the input source parameter 2006 from the default value [0] to [1] to use the CN1 emergency stop contactor. The pin definition is as follows.

Note: Pin7, Pin8 open is the circuit for emergency stop; short circuit is the normal setting.