[Cause]
The output protection fuse (FUSE2) of the peripheral device interface +24V on the motherboard has blown.
[Countermeasure]
1. It is possible that 24SDI and 0V may form a short circuit. Please check whether there is any abnormality in the peripheral device cable and replace it if necessary. Before implementing countermeasure 2 below, be sure to obtain an image backup of the controller.
2. Replace the motherboard. For details, please take appropriate measures according to the "Fault Tracing Based on Fuse" in the control device maintenance manual corresponding to the control device used.