Significance Of The Led Statuses - Festo CPX Manual Del Usuario

2.1 Significance of the LED statuses

LED Behaviour and significance
PS Illuminated green: supply voltage PS OK
Flashes green: undervoltage
Off: no or too little supply voltage
PL Illuminated green: supply voltage PL OK
Flashes green: undervoltage
Off: PL not on hand or unused
P
Off: CPX communication OK
Red: CPX starting or CPX error
X1...X4 Illuminates green: Device OK
Flashes green: Diagnostics
Illuminated red: I-Port error
Flashes red: Configuration error
Off: No device detected
Festo CPX-CTEL-Z6 1205NH English 19