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4-3
Section
Axis Parameter Area
65
The meanings of the individual axis settings are as follows:
0: The axis parameter settings in the DM Area words allocated to Special I/O
Units will be used.
1: The default axis parameter settings will be used. The settings in the DM
Area words allocated to Special I/O Units will not be used.
If the PCU’s flash memory (00) is designated as the location of the axis parame-
ters in the parameter designation setting, the above settings will not be used.
When using a 1-axis or 2-axis PCU, set 0 for the other axes (i.e., those not con-
trolled by the PCU). Setting to a value other than 0 will result in a parameter des-
ignation error (error code 0013).
Note
The settings in the DM Area words allocated to Special I/O Units will not be used
for any axes that are set to 1. This means that when control is not required for all
axes (e.g., when a 4-axis PCU is used to control 3 axes), if uncontrolled axes are
set to 1, there is no need to make settings for those axes in the DM Area.
Example 1
0
0
0
0
m+2
The PCU will operate according to the axis parameters saved in the PCU’s flash
memory.
Example 2
0
A
0
1
m+2
(when using a 4-axis PCU)
Operation for the X and Z axes will be performed according to the axis parame-
ters set in the following DM Area words allocated to Special I/O Units.
X-axis parameter area: words m+4 to m+31
Z-axis parameter area: words m+60 to m+87
The default settings will be used for the Y and U axes.
4-3
Axis Parameter Area
The axis parameters are used for settings that include the pulse output type,
input signal logic, and operation modes for axes subject to PCU control.
4-3-1 Outline
The axis parameter settings used will be selected from the following, according
to the common parameter settings.
•
The axis parameters saved in the PCU’s non-volatile (flash) memory
(when 00 is set for the parameter designation (word m+2, bits 00 to 07) in the
common parameters)
•
The axis parameters set in the DM Area words allocated to Special I/O Units
(for axes for which the axis specification (word m+2, bits 08 to 11) is set to 0
when 01 is set for the parameter designation (m+2, bits 00 to 07) in the com-
mon parameters)
•
The default axis parameters
(for axes for which the axis specification (word m+2, bits 08 to 11) is set to 1
when 01 is set for the parameter designation (m+2, bits 00 to 07) in the com-
mon parameters)
The axis parameters are read into the PCU’s internal memory at power up or
restart. Also, by using data transfer, changes in the axis parameters other than
the I/O settings and the operation mode can be reflected in subsequent operat-
ing commands.
When the axis parameters are set from the DM Area words allocated to Special
I/O Units, the setting area (i.e., the axis parameter area) will follow on from the
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