Diagnostics and troubleshooting
86
AMS 355
i
Leuze electronic GmbH + Co. KG
10.3
Interface errors
10.3.1 Net LED
Note!
DeviceNet scanners from Rockwell Automation display an error code via a 2-digit display.
The error code provides further information on possible failure causes.
For further information on the LED status displays.
10.4
Status indicators in the display of the AMS 355
i
Error
Possible error cause
Measure
Net LED "OFF"
Power off on AMS 355
i
Check supply voltage/wiring.
Bus OFF by scanner
Switch bus online.
No V+/V-
Check V+/V-.
DUP MAC ID test running
Net LED "flashes red"
Time-out in bus communication
AMS 355
i
not in the scanner scan list
Is AMS 355
i
present in the scan list, or is
DeviceNet deactivated on the AMS 355
i
?
General network error
Check termination. Check wiring
Wrong baud rate selected
Check V+/V-.
Check baud rate setting.
Note error code on scanner.
Net LED "static red"
No bus communication
Perform reset on scanner.
Change scanner.
Note error code on scanner.
Wrong baud rate selected
Check baud rate setting.
Net LED "flashes
green"
No communication can be established
AMS 355
i
present in the scan list?
Bus off on scanner.
Note error code on scanner.
The AMS 355
i
is not listed in the scan list of
the master
Net LED "flashes
green/red"
The AMS 355
i
has detected a violation of
the communication rules.
Bit Error
Acknowledgment error
Stuff error
CRC error
Form error
Note error code on scanner.
Table 10.2:
Bus error
Display
Possible error cause
Measure
PLB
(implausible measure
-
ment values)
Laser beam interruption
Laser spot must always be incident on the
reflector.
Laser spot outside of reflector
Traverse rate < 10m/s?
Measurement range for maximum distance
exceeded
Restrict traversing path or select AMS with
larger measurement range.
Velocity greater than 10m/s
Reduce velocity.
Ambient temperature far outside permissi
-
ble range (TMP display; PLB)
Select AMS with heating or ensure cooling.