ACC-72EX User Manual
Diagnostics
113
Open Modbus/TCP
– OPT80
The following table describes the meaning of the LEDs for the comX Real-Time Ethernet communication
modules (COMX 100CA-RE/ COMX 100CN-RE) when the firmware of the Open Modbus/TCP protocol
is loaded to the comX communication module:
RUN LED (COM0)
Color
State
Meaning
Green
Off
Not Ready
OMB task is not ready
Green
Flashing cyclic with 1Hz
Ready, not configured yet
OMB task is ready and not configured yet
Green
Flashing cyclic with 5Hz
Waiting for Communication:
OMB task is configured
Green
On
Connected:
OMB task has communication – at least one TCP connection is established
ERR LED (COM1)
Color
State
Meaning
Red
Off
No communication error
Red
Flashing cyclic with 2Hz
(On/Off ratio 25%)
System error
Red/Green
On
Communication error active
LINK LED
Green LED on ETH0 / ETH1 connectors:
Color
State
Meaning
Green
On
A connection to the Ethernet exists
Green
Off
The device has no connection to the Ethernet
ACT LED
Yellow LED on ETH0 / ETH1 connectors:
Color
State
Meaning
Yellow
Flashing
The device sends/receives Ethernet frames