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Status display Each time position data are transferred, status information is included and evaluated.
Depending on the encoder model, information on encoder alarms and warnings and on the
quality of the incremental signal are available.
EnDat 2.1
status display
1 In shortened form (group signal) the encoder status is displayed in the lower area of the
position display screen as a colored LED symbol.
2 Use the magnifying glass symbol to display detailed information.
The EnDat interface allows for extensive monitoring of the encoder. Ein An alarm becomes
active if there is a malfunction in the encoder that is presumably causing incorrect position
values.
Some examples of alarms:
Failure of the light unit
Signal amplitude too low
Incorrect position value
Supply voltage too high / too small
Excessive current consumption
Warnings indicate that certain tolerances of the encoder were reached or exceeded (e.g. speed,
control reserve of the light unit) but the position value is not incorrect. If a warning is displayed
the encoder concerned should be inspected or exchanged as soon as possible in order to avoid
down times.
32 HEIDENHAIN ATS Software Operating Instructions