The 1756-IB16S Safety Input Card: Dual Channel, Test Pulses and What OSSD Means
The 1756-IB16S Safety Input Card: Dual Channel, Test Pulses and What OSSD Means Channels 0 and 8 look like the obvious pair for a dual-channel gate switch on a 1756-IB16S. They are directly opposite each other on the terminal block and the wiring is tidy. They are also the one pair the module will not … Read more