40
Festo — CMMT-ST-C8-1C-...-S0 — 2021-04b
Malfunctions
Error number
Description
1
The start program has detected a CRC error in the firmware after switching on.
2
The start program has detected a CRC error in the start program after switching on.
3
The start program is supposed to update the firmware but has detected an error in
the system update file.
4
The start program is supposed to update itself and the firmware but has detected a
defective start program in the system update file.
5
The start program cannot access the file system or the system update file, or the
system update file is defective.
Tab. 45: Error messages of the start program (bootloader)
8.1.2
Interface status [X18]
LEDs at [X18]; connection status of the Ethernet interface
LED
Meaning (upper LED)
Off
Interface is deactivated.
Lights
up
green
Interface is activated.
Tab. 46: Upper LED at [X18]
LED
Meaning (lower LED)
Off
No communication activity
Flashe
s
yellow
Communication activity detected.
Tab. 47: Lower LED at [X18]
8.1.3
Device and interface status, EtherCAT
EtherCAT LED displays (CMMT-ST-...-EC only)
Together with the 2 LEDs on the top, the Run LED and the Error LED on the front display the bus/
network status.
EtherCAT, Run LED; operating status
LED
Meaning
Remedy
Off
The device is in the Init status (initialisa-
tion).
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