Rockwell Automation 1772-LP3 PLC - 2/30 Programmable Controller Programming and Operations Manual - Manual (Page 105)

Timer and Counter Instructions
Chapter 5
5Ć7
Figure 5.5
Retentive Timer with Retentive Timer Reset Timing Diagram
TRUE
FALSE
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ЙЙЙЙЙЙЙЙЙ
ON
OFF
0 1 2 3 4 5 6 7 8 9 10 11 12
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1
2
0
4
5
6
3
7
8
9
ON
OFF
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ЙЙЙЙ
ON
OFF
Time in Seconds
When Reset Switch is Closed,
Timed Bit is Reset. Accumulated
Value is Reset and Held at Zero
Until Reset Switch is Opened.
Input Switch 113/06
Enable Bit 052/17
Preset Value
ACC Value Retained When
Rung Condition Goes False
Accumulated Value
Timed Bit 052/15
Output Lamp 011/04
Rung 1 - Retentive
Timer Preset for
9 Sec. Delay
Rung 2 - Timer Turns On
Bit 010/04 When Times Out
|ą|
06
( RTO )
1.0
113 052
|ą|
15
(ą)
04
052 010
PR 009
AC 009
Input Switch
Timed Bit Output Lamp
AC = PR
ON
OFF
Reset Switch 113/07
ЙЙ
ЙЙ
ЙЙ
Rung 3 - Resets the
Retentive Timer
|ą|
07
( RTR )
113 052
Reset Switch
PR 009
AC 009
Enable
Bit is
Reset
When
Input
Switch is
Opened.
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