Sequencer Output (Sqo); Relay Ladder - Allen-Bradley Logix5000 Reference Manual

Chapter 10 Sequencer Instructions (SQI, SQO, SQL)

Sequencer Output (SQO)

Mnemonic Data Type
.EN BOOL
.DN BOOL
.ER BOOL
.LEN DINT
.POS DINT
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The SQO instruction sets output conditions for the next step of a sequence pair
of SQO/SQI instructions.
Operands:

Relay Ladder

Operand
Array
Mask
Destination
Control
Length
Position
CONTROL Structure
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 ≤ 0, .POS < 0, or .POS > .LEN.
The length specifies the number of steps in the sequencer array.
The position identifies the element that the controller is currently manipulating.
Rockwell Automation Publication 1756-RM003N-EN-P - October 2011
Type Format
DINT Array tag
SINT Tag
INT Immediate
DINT
A SINT or INT tag converts to a DINT value by sign-extension.
DINT Tag
CONTROL Tag
DINT Immediate
DINT Immediate
Description
Sequencer array
Specify the first element of the sequencer array
Do not use CONTROL.POS in the subscript
Which bits to block or pass
Output data from the sequencer array
Control structure for the operation
typically use the same CONTROL as the SQI and
SQL instructions
Number of elements in the Array (sequencer
table) to output
Current position in the array
Initial value is typically 0