Introduction

Chapter 10 Sequencer Instructions (SQI, SQO, SQL)

Sequencer Output (SQO)

The SQO instruction sets output conditions for the next step of a sequence pair of SQO/SQI instructions.

Operands:

Relay Ladder

Operand

Array

Length

Position

Type

DINT

DINT

DINT

Format

array tag

Description

sequencer array specify the first element of the sequencer array

Mask SINT

INT tag immediate

do not use CONTROL.POS in the subscript which bits to block or pass

DINT

A SINT or INT tag converts to a DINT value by sign-extension.

Destination DINT tag output data from the sequencer array

Control CONTROL tag control structure for the operation typically use the same CONTROL as the SQI and SQL instructions immediate number of elements in the Array (sequencer table) to output immediate current position in the array initial value is typically 0

CONTROL Structure

Mnemonic

.EN

.DN

.ER

.LEN

.POS

Data Type

BOOL

BOOL

BOOL

DINT

DINT

Description

The enable bit indicates that the SQO instruction is enabled.

The done bit is set when all the specified elements have been moved to the Destination.

The error bit is set when .LEN

≤

The length specifies the number of steps in the sequencer array.

The position identifies the element that the controller is currently manipulating.

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Publication 1756-RM003K-EN-P - July 2008

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