Digital Outputs
Digital Outputs
Example wiring to the digital output (All opto-isolated digital outputs will be NPN type):
The opto-ground must be connected in order for the digital outputs to operate.
When activated, the opto-isolator for the digital output sinks the voltage on the digital output line to the opto-ground. The maximum sink current for digital outputs is 90mA. Take caution to select the appropriate external resistor so that the current does not exceed 90mA. Additionally, the pull up voltage should not exceed +24VDC.
When deactivated, the opto-isolator will break the connection between the digital output and the opto-ground. In this case, the voltage on the digital output signal will be the pull-up voltage.