Sequencer Instructions
Chapter 15
1511
WARNING: The counter address for the Sequencer Input
instruction should be reserved for the instruction and the
instruction(s) which manipulate the accumulated value. Do not
inadvertently manipulate the preset or the accumulated values.
Inadvertent changes to these values could result in unpredictable
of hazardous machine operation or a run-time error. Damage to
equipment and/or personal injury could result.
To program a Sequencer Input instruction, press the key sequence [SEQ] 1.
A display represented by Figure 15.9 will appear.
Figure 15.9
SEQUENCER
INPUT Format
SEQUENCER INPUT
COUNTER ADDR:
030
CURRENT STEP:
000
SEQ LENGTH:
001
WORDS PER STEP:
1
FILE: 110- 110
MASK: 010- 010
Numbers
shown are default values. Bold numbers must be replaced by userentered values. The number of default address digits
initially displayed  3, 4, or 5  will depend on the size of the data table. Initially displayed default values are governed by the I/O rack
configuration.
COUNTER ADDRESS
:
Address of the instruction in the accumulated value area of the data table.
CURRENT STEP
:
Position in sequencer table (accumulated value of counter).
SEQ LENGTH :
Number of steps (preset value of counter).
WORDS PER STEP
:
Width of sequencer table (number of columns).
FILE :
Starting address of sequencer table.
MASK :
Starting address of mask file.
INPUT WORDS
:W
ords monitored by the instruction.
INPUT
WORDS
1: 010
3: XXX
2: XXX
4: XXX
15.2.4
Programming the Sequencer
Input Instruction
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