WAGO-I/O-SYSTEM 750
Diagnostics 115
750-806 Fieldbus Controller DeviceNet
TM
Manual
Version 2.0.0
10.1.1
Evaluating the Fieldbus Status
Communication via the fieldbus is by the top LED group. The two “MS”
(“Module Status”) and “NS” (“Network Status”) LEDs are used for the status of
the system and fieldbus connections.
Table 42: Diagnostics – Module Status (MS)
Module Status (MS)
OVERFL
(red)
RUN (green) Device status
by DeviceNet
TM
Explanation
off
off
“no power”
The device has no power.
off
on
“device operational” The device is working properly.
off
flashes
“device in standby”
The device must still be configured or is
partially configured.
flashes
off
“minor fault”
There is a minor error. A diagnosis is
available.
on
off
“unrecoverable fault” The device is defective and requires
service or must be replaced.
flashes
flashes
“device self testing” The device is performing a self-test.
Table 43: Diagnostics – Network Status (NS)
Network Status (NS)
BUS OFF
(red)
CONNECT
(green)
Device status
by DeviceNet
TM
Explanation
off
off
No power or not
online
The device is has no power (fieldbus
power supply), the DeviceNet
TM
cable is
not attached and the “Duplicate MAC ID
detection” has not been completed.
off
flashes
Online but not
connected
The device is working properly on the
fieldbus. However, but yet integrated by a
scanner.
off
on
Online and
connected
The device is working properly on the
fieldbus. There is at least one connection
to another
device.
flashes
off
Error (time out)
There is a minor error (e.g., EPR at a Poll
connection not equal to 0, slave is no
longer polled cyclically).
on
off
Critical connection
error
The device has detected an error
“Duplicated MAC ID Check”).
No functions can be
executed on the network.
