5 MANUAL CONTROL
5.3 Inching Operation
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5
Creating a program to enable/disable the inching operation
A program must be created to execute an inching operation. Consider the "required control data setting", "start conditions",
and "start time chart" when creating the program.
The following shows an example when an inching operation is started for axis 1. (The example shows the inching operation
when a "10.0 m" is set in "[Cd.16] Inching movement amount".)
Required control data setting
The control data shown below must be set to execute an inching operation. The setting is carried out with the program.
n: Axis No. - 1
Refer to the following for the setting details.
Page 504 Control Data
Start conditions
The following conditions must be fulfilled when starting. The required conditions must also be assembled in the program, and
the program must be configured so the operation will not start if the conditions are not fulfilled.
*1 The interlock must be provided so that the buffer memory is accessed after Synchronization flag [X1] turns on. When no interlock is
provided, an unexpected value may be read or written.
Setting item Setting
value
Setting details Buffer memory
address
[Cd.16] Inching movement
amount
100 Set the setting value so that the JOG speed limit value is not increased larger
than the maximum output pulse
4317+100n
Signal name Signal state Device
Interface signal PLC READY signal ON CPU module preparation completed Y0
READY signal ON RD77MS preparation completed X0
All axis servo ON ON All axis servo ON Y1
Synchronization flag
*1
ON The RD77MS buffer memory can be accessed. X1
Axis stop signal OFF Axis stop signal is OFF [Cd.180] Axis stop
Start complete signal OFF Start complete signal is OFF [Md.31] Status: b14
BUSY signal OFF RD77MS is not operating X10 to X1F
Positioning complete signal OFF Positioning complete signal is OFF [Md.31] Status: b15
Error detection signal OFF There is no error [Md.31] Status: b13
M code ON signal OFF M code ON signal is OFF [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
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