JVL Industri Elektronik A/S - User Manual - Integrated Stepper Motors MIS23x, 34x, 43x 135
8.2 MIS23x Registers
8.2.46 Afzup_ConfMax
Description: The maximum confidence limits for analogue inputs are set and read back using this reg-
ister in combination with the read and write ‘command’ registers 100 and 101.
If a new raw sample value is larger than the value in this register, it is simply discarded and
the filtered input value in registers 81-88 will not change. A value of 1023 in this register
will effectively disable the maximum confidence check.
8.2.47 Afzup_MaxSlope
Description: The maximum slopes per sample for analogue inputs are set and read back using this
register in combination with the read and write ‘command’ registers 100 and 101.
If a new raw sample value on an analogue input lies farther from the previous filtered val-
ue in registers 81-88, the new sample will be modified to lie at most MaxSlope units
from the filtered value. This is used to suppress noise and limit acceleration. Note that
the value is optionally filtered after being slope limited, in which case the effective slope
limitation will be divided by the filter ratio. A value of 1023 will effectively disable slope
limitation.
8.2.48 Afzup_Filter
Description: The final filtering of new samples on the analogue inputs can be selected using this regis-
ter in combination with the read and write ‘command’ registers 100 and 101. The final
filtered value results from taking Filter/64 of the new sample plus (64-Filter)/64 of the old
value and storing the result in registers 81-88. A value of 64 effectively disables this
filtering, so the new sample simply replaces the old value.
8.2.49 FilterStatus
Description: This register contains status bits for the analogue input filters. The lowest eight bits hold
confidence errors for each of the eight inputs, while the highest eight bits hold the status
of their slope errors.
The filter status is updated each second. The confidence error bit will be set if more than
half of the samples within the last second fell outside either of the confidence limits.
The slope errors will be set if more than half of the samples within the last second were
slope limited.
Reg Name Size Access Range Default Unit MacTalk name
103 AFZUP_Conf Max 16bit R/W 1-1023 1023 4.888 mV Confidence Max
Reg Name Size Access Range Default Unit MacTalk name
104 AFZUP_ Max Slope 16bit R/W 2-1023 1023 4.888 mV Max Slope
Reg Name Size Access Range Default Unit MacTalk name
105 AFZUP_Filter 16bit R/W 1-64 64
64
th
of new
sample
Filter (on the Filter
setup screen)
Reg Name Size Access Range Default Unit MacTalk name
106 FilterStatus 16bit R 0-65535 0
N/A (shown
graphically)
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