pulse I/O module, Canals: 2 output channels (Output CH), 2 input channels (Input CH) and 1 I/O channel (selectable)., Output signal: Output with differential or open-collector line driver., Maximum frequency: Up to 4 M pulse/s (for differential line driver, with 4-multiple A/B pulse train)., Input Signal: Input with differential line driver., Digital Inputs/Outputs (DI/DO):, OF: 7 points per axle (total 14 points)., DO: 5 points per axle (total 10 points)., Feeding: Requires a 24V DC control circuit supply.