Instruction Manual

Quick Reference
Appendix C
C13
Table C.L
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
110 110
DN
030
Mask: 010 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
110 110
030
Mask: 010 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
110 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.
NOTE: Numbers shown are default values. Numbers in shaded areas must be replaced by your entered values. The number of default
address digits initially displayed (3 or 4) will depend on the size of the data table.
To access the Data Monitor Display, enter all instruction parameters. Press key sequence:
[DISPLAY][0] for the binary monitor mode;
[DISPLAY][1] for the hexadecimal monitor mode.
This Value: Stores the: This Value: Stores the:
Counter Address Address of the instruction in the
accumulated value area of the data table
Mask Starting address of the mask file
Position Position in the sequencer table
(accumulated value of counter)
Word Address Address of the source word or destination
word outside of the file
Seq Length Number of steps (preset value of the
counter)
Output Words Words controlled by the instruction
Words per Step Width of the sequencer table Load Words Words fetched by the instruction
File Starting address of the source file Input Words Words monitored by the instruction