144 JVL Industri Elektronik A/S - User Manual - Integrated Stepper Motors MIS23x, 34x, 43x
8.2 MIS23x Registers
8.2.75 Acceptance voltage
Description: Acceptance Voltage, selects the voltage threshold that defines when the power supply is
ready to use for erasing the used flash memory sector after power up.
The scaling/unit is as follows (1023 = 111.4V) this is of cause a theoretical value and will
greatly depends on which input that is used (setup using register 142).
Due to the HW variation on inputs, different threshold values must be used. The follow-
ing table will indicate which values to be used in combination with which input that is
used.
For IO1-IO8 (Filtered or Non-filtered) an analogue voltage of 0-5V is sampled. Anything
above this will result in a 5V reading.
IO1-IO8 5V = 1023 Counts
For Bus voltage and the CVI -selection the scaling is as follows:
1023 = 111.2V (in theory) so 48V = 441.6 (approximately due to component tolerances
etc.)
Please observe that CVI measurements are only available from HW. Rev. 1.7 and up. The
HW rev. can be observed in the tooltip over the motor displayed in MacTalk.
8.2.76 Acceptance count
Description: Acceptance Count, selects the number of times the Acceptance Voltage must be meas-
ured after power up before the flash erase operation is started.
When using values 1-8 or 12 for register 142, the count is in units of ~245 microseconds.
When using values 81-88, the count is in units of 10 milliseconds.
The flash memory sector holding the absolute position information is erased at startup
to save critical time when the absolute information is about to be saved to flash memory
again.
This register selects when to consider the startup as completed and supply voltage as sta-
ble.
Reg Name Size Access Range Default Unit MacTalk name
139 Acceptance Voltage 16bit R/W 16bit 18 Counts
Acceptance
Voltage
Reg Name Size Access Range Default Unit MacTalk name
140 Acceptance Count 16bit R/W 16bit 10000 - Acceptance Count
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