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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
QD77MS 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 QD77MS.
Buffer memory address
Setting item
Setting
value
Setting details
QD77MS2
QD77MS4
QD77MS16
Cd.34
Step mode
Set "0: Deceleration unit step" or "1: Data No.
unit step".
1544+100n 4344+100n
Cd.35
Step valid flag 1 Set "1: Carry out step operation". 1545+100n 4345+100n
Cd.36
Step start
information
Set "1: Step continue", 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.
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