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MELSEC-Q
12 CONTROL SUB FUNCTIONS
[6] Precautions during control
(1) When step operation is carried out using inter polation control positioning
data, the step function settings are carried out f or the reference axis.
(2) When the step valid flag is ON, the step oper ation will start from the
beginning if the positioning start signal is turned ON while " Md.26 Axis
operation status" is "step standing by". (T he 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 show n in the following table to the
QD75 using the sequence program. Refer to secti on [4] "Using the step
operation" for the timing of the settings.
The set details are validated when written to t he QD75.
Buffer memory address
Setting item Setting
value Setting details Axis
1Axis
2Axis
3Axis
4
Cd.34 Step mode Set "0: Deceleration unit step" or "1: Data No.
unit step". 1544 1644 1744 1844
Cd.35 Step valid flag 1 Set "1: Carry out step operation". 1545 1645 1745 1845
Cd.36 Step start
information Set "1: Step continue", depending on the stop
status. 1546 1646 1746 1846
Refer to Section 5.7 "List of control data" for details on the setting details.