Mint NextMove PCI Installation Manual Page 58

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5-12 Operation MN1933
5.4 Configuring an axis
The NextMove PCI-2 is capable of controlling servo and stepper axes. This section describes
how to configure both types of axis.
5.4.1 Selecting the axis type
An axis can be configured as either a servo axis or a stepper axis. The factory preset
configuration sets all axes as unassigned (off), so it is necessary to configure an axis as either
stepper or servo before it can be used. The number of servo and stepper hardware channels
defines how many axes of each type may be configured. In the following example, the Mint
WorkBench Axis Config Wizard will be used to assign axes:
1. In the Toolbox, click the Axis Config icon.
2. For each required axis, click in the
Configuration column and select Servo
or Stepper from the drop down box.
The Axis Config Wizard automatically
assigns a Hardware Channel to the
axis. For example, Servo Channel 0
indicates the servo axis will use the
controller’s Demand0 output (breakout
module connector X7, pin 1); Stepper
Channel 1 indicates the stepper axis will
use the controller’s STEP1 and DIR1
outputs (breakout module connector
X10, pins 4, 5, 8 and 9). Optionally, the
default hardware channel assignment
can be altered by clicking in the Hardware Channel column and choosing an alternative
channel. This means the axis will no longer use the correspondingly numbered physical
outputs (Demandx or STEPx &DIRx), so extra care must be taken when connecting external
equipment.
3. Click Finish to complete the Axis Config
Wizard. The axis configuration will be
downloaded to the NextMove PCI-2.
Note: If a “Hardware channel required is in use” or “Hardware not available” message is
displayed, the configuration is not downloaded. It is likely that the number of selected
servo or stepper axes exceeds the number of physical axes of that type available on
the NextMove PCI-2. An error is also caused if the same hardware channel has been
selected for more than one servo axis, or for more than one stepper axis.
It is recommended that unused axes are always set to OFF, as this provides more processing
time for the axes that are in use. Setting an axis to Virtual means that it can be used to
simulate motion within the controller, but uses no physical outputs (hardware channel). See
the Mint help file for details of the CONFIG and AXISCHANNEL keywords.
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