1801D Overcurrent at analog output on SPI expansion module
Cause of error
Current at output exceeds 20 mA Possible causes:
- Short circuit to 0 V or to other voltage sources
- Short circuit to other outputs
- Check the connection of the shield (on both sides, low impedance. Refer to your controlís Technical Manual).
- Check the cabling for short circuits to 0 V, to voltage sources or outputs of other channels.
- Check the input impedance of the receiver.
- Inform your service agency.