A.2.1 ladder instruction list – Yaskawa MP920 User's Manual Design User Manual
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A.2 Motion Commands, Ladder Instructions, and Standard System Functions
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A.2
Motion Commands, Ladder Instructions, and Standard
System Functions
The motion commands, ladder instructions, are explained and standard system functions
A.2.1
Ladder Instruction List
The following table shows a list of the ladder instructions and standard system functions.
Type
Name
Symbol
Description
Program
Control
Instructions
CHILD DRAWING
CALL
SEE
Designate the child drawing number or the grandchild draw-
ing number to be called after SEE.
SEE H01
MOTION
PROGRAM CALL
MSEE
Designate the motion program number and the MSEE work
register address to be called after MSEE.
MSEE MPM001 DA00000
FOR Structure
FOR
:
:
FEND
Repeats execution statement 1
FOR V = a to b by c
V: Can designate any integer register I or J.
a, b, c: Can designate an any integer value
(b > a > 0, c > 0).
FEND: End of FOR instruction.
WHILE Structure
WHILE
:
ON/OFF
:
WEND
Repeats execution statement 2
WEND: End of WHILE-ON/OFF instruction
IF Structure
IFON/IFOFF
:
ELSE
:
IEND
Conditional execution statement
IEND: End of IFON/IFOFF instruction
DRAWING END
DEND
End of drawing (DWG)
COMMENT
“nnnnnnn”
A character string enclosed in quotation marks is treated as a
comment.
FUNCTION
Interface
FSTART
Calls a function.
FIN
Function input instruction
Stores input data from the designated input register in the
function input register.
FOUT
Function output instruction
Stores output data from the function output register in the
designated output register.
XCALL
Calls an extension program.
Direct I/O
Instructions
INPUT STRAIGHT INS
Executes the input and storage of data with interrupts dis-
abled.
OUTPUT
STRAIGHT
OUTS
Executes the setting and output of data with interrupts dis-
abled.
INS MA00100
OUTS MA00100