2
Overview
Festo – EXCM-30/-40-...-PF-EN – 1603 – English
21
COM
The LED display “COM” displays an active communication through a green-flashing display compon
ent. The interface assignment is shown through the flashing behaviour of the LED indicator.
A CANopen-specific message is signaled through a yellow or red LED display component.
COM - I/O operation
LED
(green/yellow/red)
Status
Meaning
Flashes green (– – – …)
Communication active.
ON
OFF
Tab. 2.3
LED indicator COM - I/O operation
COM - CANopen operation
LED
(green/yellow/red)
Status
Meaning
Illuminated green
Normal operating status.
Communication through SDOs and
PDOs possible (operational).
Flashes green (· · · · …)
Normal status after switch-on.
Communication only possible through
SDOs (pre-operational).
ON
OFF
Lights up yellow
No bus cable connected, or no bus
parameters configured.
Illuminated red
No bus connection (bus OFF).
Flashes red (· · · …)
Telegrams cannot be received or sent
(Warning Limit).
ON
OFF
Flashes red (·· ·· ·· …)
Time exceeded for communication
monitoring (node guarding).
ON
OFF
Tab. 2.4
LED indicator COM - CANopen operation
COM - CVE operation
LED
(green/yellow/red)
Status
Meaning
Flashes green (– · – · …)
Communication active.
ON
OFF
Tab. 2.5
LED indicator COM - CVE operation