Programmable Logic development Timer.ppt

Timer logic

1. Types of Timer
1> Pulse Timer (SP)
2> Extended Pulse Timer (SE)
3> On Delay Timer (SD)
4> Stored On Delay Timer (SS)
5> Off Delay Timer (SF)
Rising Edge
Falling Edge
Start Input
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A&D2/ATU PLC-BASIC-5

2. Timer No.
Start Input.
Time Value.
Reset.
Remaining Time - Binary
Remaining Time - BCD
Bit Output
Max. time = 999*10 = 9990sec = 2 hours 46 minutes 30 seconds
Time Value in STEP 7 = S5t#-h--m--s--ms
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A&D2/ATU PLC-BASIC-5

3. t
t
t
t
t
t
Start Input
ttPulse (SP)
t tExtended Pulse (SE)
t
Stored
On Delay (SS)
t tOff Delay (SF)
Timers
tOn Delay (SD)
t
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A&D2/ATU PLC-BASIC-5