Monitoring For Encoders With Endat Interface - HEIDENHAIN TNC 426 PB/M Technical Manual

Monitoring for
encoders with
EnDat interface
6 – 12
Position encoders:
In the event of a disturbance, the error message
EnDat defective <error codes> <axis> will appear.
Meaning of the error codes up to NC software 280 476-12:
Error code
(to 280 476-12)
00001
00010
00100
The error codes may also appear combined, in which case they add
themselves together.
A disturbance in communication between the EnDat position encoder and the
control (e.g. defective cable) results in the error message
EnDat defective 11111 <axis>.
Meaning of the error codes as of NC software 280 476-13:
The error code is shown in hexadecimal notation. The error codes may also
appear combined, in which case they add themselves together.
There are two possible types of errors:
n
The encoder reports an error.
n
Access to the encoder via the EnDat interface is faulty.
Codes of errors reported by the encoder:
Error code Meaning
0x00000001 Light source defective
0x00000002 Signal amplitude too small
0x00000004 Incorrect position value
0x00000008 Overvoltage
0x00000010 Undervoltage
0x00000020 Overcurrent
0x00000040 Replace battery
0x00000080 Reserved
0x00000100 Reserved
0x00000200 Reserved
0x00000400 Reserved
0x00000800 Reserved
0x00001000 Reserved
0x00002000 Reserved
0x00004000 Reserved
0x00008000 Reserved
Meaning
Light source defective
Signal amplitude too small
Incorrect position value
HEIDENHAIN Technical Manual TNC 426, TNC 430