HEIDENHAIN PROFIBUS-DP (DPV2) - Manual (Page 53)

Alarms and warnings
53
6.4 Error message
Diagnosis information can be obtained by monitoring of the Error
bit in the Status word G1_ZSW (bit 15) and evaluation of the error
code transmitted in G1_XIST2.
Supported diagnosis 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 the stored
offset or preset values from the non
volatile memory.
Command not supported 0x0F01 User parameter data assignment error
or command error in commands word
G1_STW and STW2_ENC.
Masters sign-of-life fault 0x0F02 The number of permissible failures the
controllers life sign was exceeded.
Table 22 Sensor status word