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Mitsubishi Electronics 13JW55 User Manual

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<List of instructions not explained in this chapter: part 1> 
"Introduction: PLC Course" covers the instructions shown below. The conventional A 
series also support them. 
Refer to "MELSEC-Q/L Programming Manual Common Instruction" for more details. 
 
Instruction 
symbol 
(Name) 
Function Drawing 
(devices to be used)
Instruction 
symbol 
(Name)
Function Drawing 
(devices to be used)
 LD   
Load 
Starting a logical 
operation 
Starting to operate 
a normally open 
contact 
Specifies a bit of a bit device 
or word device.
 MRD 
Lead 
Intermediate 
branching 
 LDI   
Load 
inverse 
Starting a logical 
inverse operation 
Starting to operate 
a normally closed 
contact 
Specifies a bit of a bit device 
or word device.
 MPP 
Pop 
Terminating 
branching 
 AND   
And 
Logical AND 
operation 
Series connection 
of normally open 
contacts 
Specifies a bit of a bit device 
or word device.
 NOP 
Nop 
Ignored 
For a space or deleting a 
program 
 ANI   
And 
inverse 
Logical AND 
inverse operation
Series connection 
of normally closed 
contacts 
Specifies a bit of a bit device 
or word device.
 END 
End 
END processing of 
terminating a 
program 
Must be used as an end of a 
program. 
 OR   
Or 
Logical OR 
operation 
Parallel connection 
of normally open 
contacts 
Specifies a bit of a bit device 
or word device.
 STOP 
Stopping operation
STOP
 ORI   
Or inverse 
Logical OR inverse 
operation 
Parallel connection 
of normally closed 
contacts 
Specifies a bit of a bit device 
or word device.
 SFT 
Shift 
1-bit shift for 
devices 
Specifies a bit of a bit device
or word device.
SFT
 ANB   
And block 
AND operation 
between logical 
blocks 
Series connection 
of blocks 
 SFTP 
Shift P 
1-bit shift for 
devices (pulsing 
operation) 
Specifies a bit of a bit device
or word device.
SFTP
 ORB   
Or block 
OR operation 
between logical 
blocks 
Parallel connection 
of blocks 
 NOPLF 
Ignored 
(for a page break 
at printing) 
NOPLF
 MPS   
Push 
Starting a branch
 PAGE 
Ignored 
(Recognized as 
zero step of n-page)
n
PAGE