Each input channel’s constant current voltage clamps or commutation voltage levels can be set programmatically.
With independent high and low clamping (commutating) voltages, the source and sink currents each have their own threshold voltage. If the input voltage when the load is activated is between the two clamping (commutating) voltages, the current load will remain in a high impedance state (see the figure below).
GX5055 Input Load Current Voltage Clamps
The input channel’s high and low clamping (commutating) voltage values can be set from -10V to +11V when the Vcc and Vee rail voltages are set to +18 volts and -14 volts respectively.
The input channel’s constant current voltage clamps can be read back and set dynamically at any time even when the DIO is in its run state.