M Voltage interruption
(POS), (BATT)
The battery voltage and the main supply voltage have been fallen below the limit values. As
long as this error is active, no revolutions are counted.
The battery must be replaced and the encoder must be referenced if it cannot be ensured
that the whole revolutions are still correct.
The possibly accompanying error sources M Position 1, M System and Overflow/Underflow
are to be ignored.
Overflow / Underflow
(POS), (BATT)
The specified multiturn counting range is exceeded. The error can only be reset when the
encoder has been moved back into the specified counting range.
This error source is only supported by special encoder versions, which do not support reset-
ting the multiturn counter.
BiSS Hengstler Acuro : Error register to address 0x68
LED current outside specification
Temperature outside specification
Hiperface: Values encoder status
Analog signals out of specification or faulty compensating data
Initialization of the encoder, e.g. internal values faulty
LED current outside specification
Critical encoder temperature
Position incorrect or with linear encoders: Sensor is not calibrated or distance magnetic
tape/sensor too large
For EnDat operating state error sources
S = Singleturn, M = Multiturn
1 = position value 1, 2 = position value 2
(EQUAL)
= Operating state error source is equal to the alarm bit in the lower 16 bits of ec18
(POS)
= Operating state error source is an extension of the alarm bit "Position value faulty" (bit 2) and is
the same in description and remedy
(BATT)
= for battery-buffered measuring devices
Special features of the EnDat error messages
The EnDat interface distinguishes between alarms and so-called "operating state
error sources"
When the encoder detects an internal error, it sends an alarm bit, which is indi-
cated in the lower 16 bits of ec18.
The so-called "operating state error sources" allow further information on these
alarm bits. If the encoder also supports operating state error sources, these are
now read out and displayed in the upper 16 bits of ec18.
Some error sources are the same as the alarm bits in the lower 16 bits of ec18, i.e.
they are set simultaneously and also mean the same.
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General
