Festo CTEU-PB Electronics Description page 87

3. Diagnostics
LED Process
ON
OFF
LED is off
1)Electrical connection box CAPC with two interfaces for connecting a second device is required.
Tab. 3/3: Status displays of the device-specific "X1" LED if device 1 is connected and
"X2" if device 2 is connected
Festo P.BE-CTEU-PB-OP+MAINT-EN en 1208NH English
Status
Connection is being estab-
lished.
No I-Port device is connec-
ted to the corresponding
I-Port connection.
Meaning/error elimination
–
3-7