State LEDs¶
| LED | State | Color | LED = OFF | LED = ON | LED flashes |
|---|---|---|---|---|---|
| PWR | Process voltage 24 VDC via terminal | Green | CPU module voltage or external 24 VDC supply voltage is missing | 3.3 V system voltage (IO bus) and external 24 VDC supply voltage are present | — |
| ERR | Channel or module error | Red | No error or process voltage is missing | Severe error in the module | Error on 1 or more channels of the module |