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Chapter 13 Control Sub Functions
[6] Precautions during control
(1) When step operation is carried out using interpolation control positioning
data, the step function settings are carried out for the reference axis.
(2) When the step valid flag is ON, the step operation will start from the
beginning if the positioning start signal is turned ON while "[Md.26] Axis
operation status" is "step standby". (The step operation will be carried out
from the positioning data set in "[Cd.3] Positioning start No.".)
[7] Step function settings
To use the "step function", write the data shown in the following table to the
Simple Motion module using the sequence program. Refer to section [4] "Using
the step operation" for the timing of the settings.
The set details are validated when written to the Simple Motion module.
Setting item
Setting
value
Setting details
Buffer memory address
QD77MS2
QD77MS4
QD77MS16
[Cd.34] Step mode
Set "0: Stepping by deceleration units" or "1:
Stepping by data No. units".
1544+100n 4344+100n
[Cd.35] Step valid flag 1 Set "1: Validates step operations". 1545+100n 4345+100n
[Cd.36]
Step start
information
Set "1: Continues step operation", depending
on the stop status.
1546+100n 4346+100n
n: Axis No.-1
: Refer to Section 5.7 "List of control data" for details on the setting details.