Rockwell Automation 1772-LP3 PLC - 2/30 Programmable Controller Programming and Operations Manual - Manual (Page 97)

Introduction to Programming
Chapter 4
4Ć33
Figure 4.16
Storage Bit Example
|ą| (ą)
1
|ą| (ą)
|ą|
2
|ą|
8
|ą|
3
|ą|
9
|ą|
4
|ą|
10
|ą|
5
|ą|
11
|ą|
6
|ą|
12
|ą|
7
|ą|
13
|ą| (ą)
1
|ą|
2
|ą|
3
|ą|
4
|ą|
5
|ą|
6
|ą|
7
|ą|
8
|ą|
9
|ą|
10
|ą|
11
|ą|
12
|ą|
13
Output
Storage Bit
Exceeds Horizontal Display Limit
A. Exceeds 12 Input Instructions in Series
B. Use of Storage Bit
Storage
Bit
Recommendations for Block Instructions
Up to 8 condition instructions in series can be programmed in a rung if
the output is a block instruction.
Up to 8 series condition instructions can be used with a Sequencer Input
instruction if the output is not a block instruction.
Up to 4 series condition instructions can be used with a Sequencer Input
instruction if the output is a block instruction.
Up to 2 branches containing condition instructions can be used in
parallel with a Sequencer Input instruction.
Up to 9 series condition instructions can be used with an Examine On or
Examine Off Shift Bit instruction if the output is not a block instruction.
Up to 5 series condition instructions can be used with an Examine On or
Off Shift Bit instruction if the output is a block instruction.
Up to 3 series condition instructions can be used with a Sequencer Input
and an Examine On or Off Shift Bit in series if the output is not a block
instruction.