Start Program - Mitsubishi Electric MELSEC-L LD75P User Manual

6.5.3

Start program

This program is used to start the control with start commands.
The control can be started with the following two methods.
• Starting by inputting positioning start signal [Y10, Y11, Y12, Y13]
• Starting by inputting external command signal
CPU module
1) Set the "positioning start No." corresponding to the control to be started in "[Cd.3] Positioning start No.". (In the above example, set
positioning data No. "1".)
2) Input the positioning start signal [Y10] or the external command signal.
3) The positioning data No. "1" will start.
[Starting conditions]
To start the control, the following conditions must be satisfied.
The necessary start conditions must be incorporated in the program so that the control is not started when the
conditions are not satisfied.
Signal name
Interface signal
External signal
*1 When the synchronous setting of the CPU module is made in the nonsynchronous mode, this must be provided as an
interlock.
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 CPU module executes calculation.
288
Buffer memory
1)
1
1500
2)
ON
Input/output signal
Y10
PLC READY signal
LD75 READY signal
*1
Synchronization flag
Axis stop signal
M code ON signal
Error detection signal
BUSY signal
Start complete signal
Drive unit READY signal
Stop signal
Upper limit (FLS)
Lower limit (RLS)
3)
Control with
positioning data
No. 1
When starting positioning with the scan
after the completion of positioning,
insert X10 as an interlock so that
positioning is started after Y10 is turned
OFF and X10 is turned OFF.
Signal state
CPU module preparation
ON
completed
ON LD75 preparation completed
ON LD75 buffer memory 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.
ON Drive unit preparation completed
OFF Stop signal is OFF.
ON Within limit range
ON Within limit range
Drive unit
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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