Byte Bit Description Alarm (A) /
Warning (W)
3 24 Memory error (EEPROM checksum) A
25 Memory error (EEPROM IRQ) A
26 Error during commissioning (start-up) A
27 Error during self test A
28 Limit of the movement time of the encoder is exceeded W
29 So-called “sanity check flag”. The flag is set when the
encoder has detected an incorrect speed or a position error.
Is reset when the device is switched on again.
-
30 Slave sign of life. Active if attribute ID 0Dh is set (see
table 24, page 29). The bit changes its value in the config‐
ured update cycle.
-
31 Limit of the operating time of the encoder is exceeded W
Alarms
If, for example, the internal self-test determines that the position value was calculated
incorrectly or an incorrect configuration value was transmitted to the encoder, then the
alarm flag is set (attribute 46, see table 24, page 29).
DANGER
Alarms in the application must be evaluated!
In the event of a serious error, a correct position value may not be output. This could
cause an unexpected movement that could endanger people or damage the system or
other objects.
In addition, the Encoder LED permanently lights up red.
In attributes 44 and 45, the type of alarms is masked in a bit field.
Table 34: Alarms
Bit Description
0 Position error
1 Error during self test
2 ... 11 Reserved
12 Checksum incorrect (manufacturer-specific)
4 Error at system start-up (manufacturer-specific)
14 ... 15 Reserved
Warnings
For example, if the limits for speed or temperature are undercut/exceeded, the warning
flag is set (attribute ID 31h, see table 24, page 29).
In addition, the Encoder LED flashes red.
In attribute IDs 2Fh and 30h, the type of warnings is masked in a bit field.
NOTE
The position value continues to be calculated correctly, so the encoder is still ready for
operation.
TROUBLESHOOTING 7
8014213/1EF3/2021-12-08 | SICK O P E R A T I N G I N S T R U C T I O N S | AFS/AFM60 EtherNet/IP
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Subject to change without notice
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