HEIDENHAIN PROFINET - Manual (Page 51)

Alarms and warnings
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5.3 Sensor status word
Diagnosis information can be obtained by monitoring of the Error
bit in the Sensor Status word G1_ZSW (bit 15) and evaluation of
the error code transmitted in G1_XIST2.
Supported diagnostic Error code in
G1_XIST2 Description
Sensor group error 0x0001 The encoder fails to read the correct
position value
Memory error 0x1001 The encoder fails to read stored offset
or preset values from the non volatile
memory
Command not supported 0x0F01 User parameter data assignment error
or command error in commands words
G1_STW and STW2_ENC
Master´s sign of life fault 0x0F02 The number of permissible failures the
controller’s life sign was exceeded.
Table 24 Sensor status word