Allen-Bradley PLC-2/30

Sequencer Instructions
Chapter 15
152
Sequencer instructions, when enabled, increment to the next step and then
the operation is performed.
Figure 15.1
Sequencer
T able
Step Word 1 W ord 2 W ord 3 W ord 4
001 001 10101 1 1000101 00011 101 1 1001010 1011101 1 1 1001011 01011 101 0101 1111
002 011
10100 0001 1101 0001011 1 001 10011 " 01010101 01010101
003""""
"""""
"""""
"""""
"""""
"""""
"""""
024
00010101 10100000 10100010 10101000 01010000 0101 1111 10111 100 001 10011
Figure 15.2
Sequencer
T able Format in the Data T able
Data Table
Data T able
024
024
024
024
Step 001
002
Step 001
002
Step 001
002
00 01 01 0110 10 00 00
00 01 1 1 011 1 00 10 10
00 01 01 1
100 1 1 00 1 1
10 10 00 1010 10 10 00
10 1 1 10 1 11 1 00 10 1 1
01 01 00 0001 01 1 1 1 1
01 01 1 1 0101 01 1 1 1 1
01 01 01 0101 01 01 01
10 1 1 1 1 0000 1 1 00 1 1
Step 001
002
00 1 1 01 011 1 00 01 01
01 1 1 01 0000 01 1 1 01
W ord #2
W ord #3
W ord #4
W ord #1
The 4 words per
step (columns)
of the sequencer
table are located
sequentially in
the data table.
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