Test - Siemens SIMATIC S7-200 Getting Started

5.17

Test

You can enter the program yourself or load the file 2h_pr_05.mwp from the Programming
Exercises CD. Please note that the stop switch I0.0 and the motor protection I0.5 are
"normally-closed (NC) contacts". This has been implemented in this way for safety reasons.
A broken wire between the switches and the PLC stops the machine!
I0.5 and I0.0 must be "1" for test purposes, that is, the input LEDs must light up.
Briefly operating I0.1 starts the drive. The feed Q0.2 switches on after 3 s. After I0.3 is
operated, the drive reverses its direction of rotation and the feed Q0.2 stops.
If the initial position is reached (brief operation of I0.4), the drive stops after 1s. I0.0 and I0.5
stop the drive in every phase.
Use the Debug > Start Program Status menu command to watch the program run. You will
see exactly which input is required in each case for making the transitions in the sequencer.
Getting Started - Advanced
Training Documents, 09/2007, A5E01469795B
Sequencer
5.17 Test
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