System diagnostics [SD]
LED (red,
green)
Meaning
Remedy
Off
Logic supply PS not available.
Check connection of logic supply PS.
Illuminated
green
No system diagnostics active
–
Flashes green
System diagnostics active
Degree of severity "Information"
e. g. load supply PL to a module not
available or firmware update in a module
active.
–
Flashes red
System diagnostics active
Degree of severity "Warning"
e. g. e.g. parameterisation error in a
module.
Illuminated red
System diagnostics active
Degree of severity "Error"
e. g. sensor supply short circuit in a
module.
Flashes quickly
green
Module identification (service function)
–
Tab. 21 LED system diagnostics [SD]
Diagnostics and Fault Clearance
27
Festo — CPX-AP-I-EC-M12 — 2019-11
