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Chapter 11 Manual Control
11.2.4 Creating start programs for JOG operation
A sequence program must be created to execute a JOG operation. Consider the
"required control data setting", "start conditions" and "start time chart" when creating
the program.
The following shows an example when a JOG operation is started for axis 1. ("[Cd.17]
JOG speed" is set to "100.00mm/min" in the example shown.)
Required control data setting
The control data shown below must be set to execute a JOG operation. The
setting is carried out with the sequence program.
Setting item
Setting
value
Setting details
Buffer memory address
QD77MS2
QD77MS4
QD77MS16
[Cd.16]
Inching movement
amount
0 Set "0". 1517+100n 4317+100n
[Cd.17] JOG speed 10000
Set a value equal to or below the "[Pr.31]
JOG speed limit value".
1518+100n
1519+100n
4318+100n
4319+100n
n: Axis No.-1
: Refer to Section 5.7 "List of control data" for details on the setting details.
Start conditions
The following conditions must be fulfilled when starting. The required conditions
must also be assembled in the sequence program, and the sequence program
must be configured so the operation will not start if the conditions are not fulfilled.
Signal name Signal state
Device
QD77MS2
QD77MS4
QD77MS16
Interface
signal
PLC READY signal ON PLC CPU preparation completed Y0
READY signal ON QD77MS preparation completed X0
All axis servo ON ON All axis servo ON Y1
Synchronization flag ON
QD77MS buffer memory
The access is possible.
X1
Axis stop signal OFF Axis stop signal is OFF Y4 to Y7 [Cd.180] Axis stop
Start complete signal OFF Start complete signal is OFF X10 to X13 [Md.31] Status: b14
BUSY signal OFF QD77MS is not operating XC to XF X10 to X1F
Error detection signal OFF There is no error X8 to XB [Md.31] Status: b13
M code ON signal OFF M code ON signal is OFF X4 to X7 [Md.31] Status: b12
External
signal
Forced stop input signal ON There is no forced stop input –
Stop signal OFF Stop signal is OFF –
Upper limit (FLS) ON Within limit range –
Lower limit (RLS) ON Within limit range –
: If the PLC CPU is set to the asynchronous mode in the synchronization setting, this must be
inserted in the program for interlocking. If it is set to the synchronous mode, it must not be
inserted in the program for interlocking because it is turned ON when the PLC CPU executes
calculation.