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12 CONTROL AUXILIARY FUNCTIONS
(6) Precautions during control
(a) When step operation is carried out using interpolation control positioning
data, the step function settings are carried out for the reference axis.
(b) When the step valid flag is ON, the step operation will start from the
beginning if the positioning start signal is turned ON while "Axis operation
status (RWrn+7, RWrn+15)" is "step standing by", "step stopped", or "step
error occurring". (The step operation will be carried out from the positioning
data set in "Positioning start No. (RWwm, RWwm+8)".)
(7) Step function settings
To use the "step function", write the data shown in the following table to the
D75P2 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 D75P2.
Setting item
Setting
value
Setting details
Buffer memory address
Axis 1 Axis 2
Cd.26
Step valid flag 1 Set "1: Carry out step operation". 1172 1222
Cd.27
Step mode
Set "0: Deceleration unit step" or "1: Data No.
unit step".
1173 1223
Cd.28
Step start
information
Set "1: Step continue" or "2: Restart",
depending on the stop status.
1174 1224
* Refer to section "5.7 List of control data" for details on the setting details.