Maple Systems MAPware-7000 - Manual (Page 138)

MAPware-7000 Ladder Logic Guide 130
1010-1041 rev. 00
Instruction 83- NEXT (For-Next loop)
Expression:
Space Requirement: 1 line x 1 column Location Requirement: Right rail
Function:
This instruction configures a FOR-NEXT loop.
If the input is OFF, the repetition is forcibly broken, and the program execution is moved to the
next instruction.
Execution Condition:
Input Operation Output
OFF Forcibly breaks the repetition OFF
ON Repetition ON
Operand:
No operand is required.
Example:
When B005 is ON, the program segment between FOR and NEXT is executed 30 times in a scan.
In the above example, the rung 3 is executed 30 times. As a result, the data of D0000 to D0029
are transferred to D0500 to D0529. (Block transfer).
Note
The FOR instruction must always have a corresponding NEXT instruction.
Nesting of the FOR-NEXT loop is not allowed. That is, the FOR instruction cannot be used in a
FOR-NEXT loop.
The FOR and NEXT instructions cannot be programmed on the same rung.
The following connection is not allowed.