Rockwell Automation Publication 2198-UM004D-EN-P - December 2022 517
Appendix C Use Add-On Instructions
raC_xxx_K5100_MAG
(1)
Use the Motion Axis Gear (MAG) Add-On Instruction to execute a pulse-pulse
relationship with the drive. The MAG Add-On Instruction uses the E-Gear ratio
configured in the KNX5100C software. The E-Gear ratio dialog box is shown in
Figure 268
. When the MAG Add-On Instruction is used, the drive behaves like
it is in PT (Position Terminal - or Pulse Train) mode and the drive uses the E-
Gear ratio to respond to master pulses.
Figure 268
describes the values in the E-Gear ratio dialog box. Not all values
shown here are used with the Motion Operation Add-On Instruction.
Figure 268 - E-Gear Ratio Dialog Box
The PT Mode is a pulse-pulse follower relationship. When the variable ratio is
used and the ratio is changed, there is no positioning ability. Therefore, when
you are finished using the MAG Add-On Instruction, your position scaling
(which also uses the E-Gear ratio) might have changed if you used variable
GearingMode and changed the Master ratio because of your application
requirements.
(1) The xxx in the name can be Dvc (legacy applications) or Opr (new applications).
Item Description
1
Gear Ratio Selection pull-down menu - You can choose from four different ratios (N1…N4) (Not used
with Add-on Instructions)
2 Gear Ratio Follower Counts (N1) - Set this value as the motor feedback resolution.
3 Gear Ratio Master Counts (M) - Set this value as the counts/motor resolution. This value is set for
whatever your application requires. Typical values are 100,000 counts for a high-resolution encoder.
4 GNUM0/1 - These values are mapped to the Digital Inputs that represent binary weighted values to
select the Gear Ratio value. (Not used with Add-on Instructions)
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