Mitsubishi QD75P1N User Manual page 260

6 SEQUENCE PROGRAM USED FOR POSITIONING CONTROL
Interface
signal
External
signal
: When the synchronous setting of the CPU module is made in the nonsynchronous mode, this must
be provided as an interlock.
When it is made in the synchronous mode, no interlock must be provided in the program because the
flag is turned ON when calculation is run on the CPU module.
Starting conditions
To start the control, the following conditions must be satisfied.
The necessary start conditions must be incorporated in the sequence program so
that the control is not started when the conditions are not satisfied.
Signal name
PLC READY signal
QD75 READY signal
Synchronization flag
Axis stop signal
M code ON signal
Error detection signal
BUSY signal
Start complete signal
Drive unit READY signal ON Drive unit preparation completed
Stop signal
Upper limit (FLS)
Lower limit (RLS)
Signal state
CPU module preparation
ON
completed
ON QD75 preparation completed
QD75 buffer memory
ON
Accessible
OFF Axis stop signal is OFF.
OFF M code ON signal is OFF.
OFF No error is present.
OFF BUSY signal is OFF.
OFF Start complete signal is OFF.
OFF Stop signal is OFF.
ON Within limit range
ON Within limit range
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MELSEC-Q
Device
Axis 1 Axis 2 Axis 3 Axis 4
Y0
X0
X1
Y4 Y5 Y6 Y7
X4 X5 X6 X7
X8 X9 XA XB
XC XD XE XF
X10 X11 X12 X13
–
–
–
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