Festo CPX-CTEL4-M12-5POL Manual page 26

1. System overview, CTEL system
LED Behaviour
PL Off
Lights up green
Flashes green (ap-
prox. 1 Hz)
Off
Lights up red
X1...X4 Off
Lights up green
Flashes green
Lights up red
Flashes red
All four LEDs flashing
red
Tab. 1/3: Significance of the display LEDs
1-12
Significance
Several causes are possible:
– Load supply voltage is not connected (device supply).
– No devices at all are connected.
– Devices are connected that do not use the PL supply (e.g. input
module CTSL-D-16E-...).
– All 4 I-ports are configured to "Port inactive".
Load supply voltage present at all connected devices and is OK.
At least one device reports undervoltage PL.
CPX system-internal communication OK.
Several causes are possible:
– CPX system starts momentarily, display then turns off.
– General error.
No connection to a device.
Device connected, communication OK.
Several causes are possible:
– Connection established to the device, diagnostics running.
– I/O length of the recognised device is too large (only in the tool
change mode, see section 3.1.1).
Device error. Several causes are possible:
– Connection to the device interrupted.
– Error in the I-port communication.
Compatibility error. Several causes are possible:
– An incompatible device is connected to the corresponding I-port.
– The corresponding port is deactivated, but a connected device is
recognised.
Configuration error. Several causes are possible:
– Invalid configuration (e.g. through exceeding of the available
address space).
– Device was not replaced by another device type, system restart
necessary (only for automatic configuration).
Festo P.BE-CPX-CTEL-EN en 1205NH