Counter instructions, Program control instructions – Maple Systems MAPware-7000 User Manual

Page 18

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MAPware-7000 Ladder Logic Guide

10

1010-1041 rev. 00

Counter Instructions

These are instructions which run counters.

Instruction Name

Symbol

Description

Execution
Time (μSec)

Counter

When the input is ON, timer will update
according to the time specified
(hundredths of second) in Operand A.
Time elapsed is recorded in Operand B.
When time reached, output is turned ON.

4.4 μsec

Up/Down Counter

While enable input (E) is ON, this counter
increments/decrements the number of
cycles (once per scan) while count input
(C) is ON, and puts the result in target
Counter address. The counter counts up
if input (U) is ON, counts down if input
(U) is OFF.

1.3 μsec

Program Control Instructions

These are instructions which do program control.

Instruction Name

Symbol

Description

Execution
Time (μSec)

Subroutine call

Calls the target subroutine.

2.7 μsec

Subroutine return

Returns to the calling logic block.

FOR

When input is ON, the segment of logic
between the FOR and NEXT statements.

3.3 μsec

NEXT

executes repeatedly during a scan until
the count is reached.

Master Control Set

The Master Control Set (MCS) and Master
Control Reset (MCR) instructions turn.

2.3 μsec

Master Control Reset

OFF the power rail between these
instructions when MCS input is OFF.

Jump Control Set

Jumps from Jump Control Set (JCS) to the
Jump Control Reset (JCR) when input

1.8 μsec

Jump Control Reset

to JCS is ON.

Enable Interrupt

Allows execution of interrupt programs.

5.2 μsec

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