Question

T4:1/DN TON Timer On Delay Timer T4:0 Time Base 0.1 Preset 20 Accum 20 EN DN T4:0/DN TON Timer On Delay Timer T4:1 Time Base 0.1 Preset 20 Accum 5 EN DN I:1/0 T4:0/DN 0:2/0 Figure 5: Annunciator Flasher

          T4:1/DN
TON
Timer On Delay
Timer T4:0
Time Base 0.1
Preset 20
Accum 20
EN
DN
T4:0/DN
TON
Timer On Delay
Timer T4:1
Time Base 0.1
Preset 20
Accum 5
EN
DN
I:1/0
T4:0/DN
0:2/0
Figure 5: Annunciator Flasher

Added by Gabriel S.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Jacob Fry

Step 1

First, we need to add a new rung to the existing program to detect the NO push button (I:1/0) being pressed and released. We can do this by adding a rising edge trigger (RET) instruction to the rung. The rung should look like this: I:1/0 | RET | T4:1/DN | O:2/0 Show more…

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Thanks for your feedback!

III. By adding and/or modifying a couple of rungs in the figure 5, Annunciator Flasher, of Module 10, design a PLC program to perform the following tasks: a. When an NO (I:1/0) push button is pressed and released, the Output O:2/0 will be flashing every two seconds repeatedly. b. When an NC (I:1/1) push button is pressed and released, the flasher will be reset and is ready for another cycle. T4:1/DN TON Timer On Delay Timer T4:0 Time Base 0.1 Preset 20 Accum 20 EN DN T4:0/DN TON Timer On Delay Timer T4:1 Time Base 0.1 Preset 20 Accum 5 EN DN I:1/0 T4:0/DN 0:2/0 Figure 5: Annunciator Flasher