Creating A Start Program For The Inching Operation - Mitsubishi Electric MELSEC iQ-R-RD75P4 User Manual

Creating a start program for the inching operation

To perform the inching operation, create a program. When creating a program, consider Control data requiring settings, Start
condition, and Start time chart. The following shows an example when the inching operation is started for the axis 1. ([Cd.16]
Inching movement amount is set to 10.0m.)
Control data requiring settings
The following control data must be set to execute the inching operation. The setting is executed with a program.
Setting item
[Cd.16] Inching movement amount
For details on the settings, refer to the following.
Page 474 [Cd.16] Inching movement amount
Start condition
Satisfy the following conditions to start a program. In addition, set the required conditions in the program to prevent an
operation from starting if the conditions are not satisfied.
Signal name
Interface signal PLC READY signal
RD75 READY signal
Module access flag
Axis stop signal
Start complete signal
BUSY signal
Positioning complete signal
Error detection signal
M code ON signal
External signal Drive unit READY signal
Stop signal
Upper limit (FLS)
Lower limit (RLS)
*1 The interlock must be provided so that the buffer memory is accessed after Module access flag [X1] turns on. When no interlock is
provided, the buffer memory may be accessed while the module parameter and module extension parameter that are sent from the CPU
module are updated. If the buffer memory is accessed during the update, an unexpected value may be read or written.
5 MANUAL CONTROL
190
5.3 Inching Operation
Setting Setting detail
value
100 Set a setting value so that the command pulse is not larger
than the maximum output pulse.
Maximum output pulse
RD75D: 5Mpulse/s
RD75P: 200kpulse/s
Signal status
ON The CPU module is ready.
ON RD75 READY signal
*1
ON The RD75 buffer memory can be
accessed.
OFF Axis stop signal is off.
OFF Start complete signal is off.
OFF The RD75 is not in operation.
OFF Positioning complete signal is off.
OFF No error has been detected.
OFF M code ON signal is off.
ON The drive unit is ready.
OFF Stop signal is off.
ON The current position is within the limit.
ON The current position is within the limit.
Buffer memory address
Axis 1 Axis 2 Axis 3
1517 1617 1717
Device
Axis 1 Axis 2 Axis 3
Y0
X0
X1
Y4 Y5 Y6
X10 X11 X12
XC XD XE
X14 X15 X16
X8 X9 XA
X4 X5 X6




Axis 4
1817
Axis 4
Y7
X13
XF
X17
XB
X7