The CPU comes with the following LED displays:
- RUN/STOP LED (yellow/green LED)
- ERROR LED (red LED)
- MAINT LED (yellow LED)
- LINK RX/TX LED for port X1 P1 (yellow/green LED)
- LINK RX/TX LED for port X1 P2 (yellow/green LED)
- LINK RX/TX LED for port X2 P1 (yellow/green LED)