D301087 0308 - BL20 CANopen 3-29
Status Indicators/ Diagnostic Messages Gateway
3
IOs Red and
LED
"GW"
off
Controller is not ready,
V
CC
level is not within
the required range →
possible reasons:
– too many modules
connected to the
gateway
– short circuit in
connected module
– hardware error in
– gateway
– Check wiring at the
gateway and the
voltage supply.
– Dismount modules
– Replace the gateway.
Red
flashing,
1 Hz
Non-adaptable modifi-
cation of the physically
connected station.
– Compare the planned
BL20 station with the
physical station.
– Check the physical
station for defective or
incorrectly fitted elec-
tronics modules.
Red
flashing,
4 Hz
no module bus
communication
At least one module has
to be plugged and has to
be able to communicate
with the gateway.
Red/
green
flashing,
1 Hz
Adaptable modification
of the physically
connected station;
data transfer possible
Check the physical
station for pulled or new
but not planned
modules.
Red Short circuit or over-
load at sensor supply →
sensor supply is
switched off
Automatic restart when
debugging.
Off No voltage supply. Check the wiring of the
voltage supply.
Table 11:
LED indicators
LED Status Meaning Remedy
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