7
Fault diagnosis
This chapter describes how to identify and rectify errors and malfunctions of the AHS/
AHM36 SAE J1939 und AHS/AHM36 SAE J1939 Inox Absolute encoder.
7.1
In the event of faults or errors
CAUTION
Cease operation if the cause of the malfunction has not been clearly identified!
Stop the machine if you cannot clearly identify or allocate the error and if you cannot
safely rectify the malfunction.
7.2
Support
If you cannot remedy an error with the help of the information provided in this chapter,
please contact your local SICK subsidiary.
7.3
Error and status indications on the LED
LED
Figure 6: Position of the LED
7.3.1
Meaning of LED indicators
The LED indicates the status of the SAE J1939 stack and errors on the CAN bus.
Table 16: Meaning of LED indicators
Display
Description
Status indicator
ôKõ
Green
Status SAE J1939 Stack = Stopped
ôFõ
Green
Status SAE J1939 Stack = Pre-Operational
O
Green
Status SAE J1939 Stack = Operational
Fault indicators
o
Off
No supply voltage
O
Red
BUS OFF - The SAE J1939 client is disconnected from the bus
ôFõ
Red
Invalid configuration
ôKõ
Red
Warning Limit reached.
(Counter of the internal CAN controller has reached the warning
level for error frames)
FAULT DIAGNOSIS
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8027379/2022-01-21 | SICK
O P E R A T I N G I N S T R U C T I O N S | AHS/AHM36 SAE J1939
AHS/AHM36 SAE J1939 Inox
25
Subject to change without notice