Rockwell Automation 1747-PT1, D1747NP002 Hand-Held Terminal - Manual (Page 323)

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24 Chapter
24–1
Sequencer Instructions
This chapter covers sequencer instructions including Sequencer Output,
Sequencer Compare, and Sequencer Load. These instructions are generally
used in machine control.
Instructions for use with fixed, SLC 5/01, and SLC 5/02 processors:
•
Sequencer Output (SQO). It transfers 16-bit data to word addresses for
the control of sequential machine operations.
•
Sequencer Compare (SQC). It compares 16-bit data with stored data to
monitor machine operating conditions or for diagnostic purposes.
Instruction for use with the SLC 5/02 processor only:
•
Sequencer Load (SQL). It loads 16-bit data into a file at each step of
sequencer operation.
All application examples shown are in the HHT zoom display.
The following general information applies to sequencer instructions.
Applications Requiring More than 16 Bits
When your application requires more than 16 bits, parallel (branch) multiple
sequencer instructions.
Effect on Index Register in SLC 5/02 Processors
Sequencer instructions alter the contents of the index register, S:24. Details
appear with the specific instructions.
Sequencer Instructions
Overview