2-15
Part 2: Interfacing and Configuring
Screen 1: The Motion Settings Configuration Screen
The IMS SPI Motor Interface Software opens by default to the Motion Settings Screen shown on the left.
There are six basic parameters that may be set here:
1. MSEL: Microstep Resolution Select.
2. HCDT: Holding Current Delay Time.
3. MRC: Motor Run Current
4. Motor Holding Current
5. User ID: 3-character ID
6. Direction Override: Allows the user to set the CW/CCW direction of the motor in relation to the
Direction Input from the SPI Motor Interface.
MSEL (Microstep Resolution Selection)
The MDriveAC Plus Microstepping features 20 microstep resolutions. This setting specifies the number of
microsteps per step the motor will move.
The MDriveAC Plus MicroDrive uses a 200 step (1.8°) stepping motor which at the highest (default) resolution of
256 will yield 51,200 steps per revolution of the motor shaft.
See Table 2.3.2 for available Microstep Resolutions.
Microstep Resolution Settings
Binary µStep Resolution Settings
Decimal µStep Resolution Settings
MS=<µSteps/Step>
Steps/Revolution
MS=<µSteps/
Step>
Steps/Revolution
1
200
5
1000
2
400
10
2000
4
800
25
5000
8
1600
50
10000
16
3200
100
20000
32
6400
125
25000
64
12800
200
40000
128
25600
250
50000
256
51200
Additional Resolution Settings
180
36000 (0.01°/µStep)
108
21600 (1 Arc Minute/µStep)
127
25400 (0.001mm/µStep)
Table 2.3.2: Microstep Resolution Settings
Figure 2.3.7: SPI Motor Interface Motion Settings Screen
Load Factory
Default Settings
Exit Program
Store Settings
to NVM
Three Character
User ID
Microstep Resolution
Selection
Holding Current
Delay Time
Direction
Override
Motor Run
Current
Motor Holding
Current
Fault/Checksum
Error
