Advanced instruction set chapter 6 – Rockwell Automation 1772-LV Mini-PLC - 2/15 Programmable Controller (Series B) Programming and Operations User Manual
Page 87

Advanced Instruction Set
Chapter 6
6Ć30
Figure 6.13
Sequencer Instructions
Key Sequence
1779-T3 Display
Instruction Notes
SEQ 0
EN
Sequencer Output
Counter Addr:
Current Step:
Seq Length:
Words per Step:
File:
001
001
1
110Ć 110
DN
030
Mask:
010Ć 010
030
17
030
15
Output Words
1:
3:
010
2:
4:
Output instruction.
Increments, then transfers data.
Same data transferred each scan that the rung is
true.
Counter is indexed by the instruction.
Unused output bits can be masked.
Requires 5-8 words of your program.
SEQ 1
Sequencer Input
Counter Addr:
Current Step:
Seq Length:
Words per Step:
File:
000
001
1
110Ć 110
030
Mask:
010Ć 010
Input Words
1:
3:
010
2:
4:
Input instruction.
Compares input data with current step for equality.
Counter must be externally indexed by your
program.
Unused input bits can be masked.
Requires 5-8 words of your program.
SEQ 2
EN
Sequencer Load
Counter Addr:
Current Step:
Seq Length:
Words per Step:
File:
000
001
1
110Ć 110
DN
030
030
17
030
15
1:
3:
010
2:
4:
Output Words
Output instruction.
Increments, then loads data.
Counter is indexed by the instruction.
Does not mask.
Requires 4-7 words of your program.
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