Step Sequence (Event Drum Timer) - S7200

Step Sequence (Event Drum Timer)
Category: General Applications
Special Hardware Requirements: None
Project Example
This example program demonstrates a step sequence in which each step is followed by certain actions.
The steps follow one after another, and a step is only executed when all of the conditions stipulated for it have been met. The following applies:

Tip 18: Step Sequence (Event Drum Timer)

Copyright 2002 Siemens Energy & Automation
SIMATIC S7-200 customers have free use of the application tips. These tips are only a general approach to using the S7 -200 with various applications.
Your specific application may be different. It is your responsibility to use the SIMATIC S7-200 properly in your applications.

You could find the Program HERE

How to Track How Long a Device Has Been Operating - S7200

How to Track How Long a Device Has Been Operating (Tip 16)
Category: General Applications
Special Hardware Requirements: None
Project Example. Version 5.0. Updated 10/01
This example program shows how to record the operating period of a device such as a brake or switch. To ensure the validity of the results, a 24-V signal must be present at input I0.0 while the device is running and no voltage should be present while the device is off.
When the signal starts, time measurement starts. When the signal stops, time measurement is interrupted until the signal resumes.
The number of hours is stored in variable memory word VW0.
The number of minutes is stored in variable memory word VW2.
The number of seconds is stored in variable memory word VW4.

Copyright 2002 Siemens Energy & Automation
These tips are only a general approach to using the S7 -200 with various applications.
Your specific application may be different. It is your responsibility to use the SIMATICS7 -200 properly in your applications.

You could download the Program HERE

Reversible Motor Starter Circuits for Changing the Rotational Direction of Three-Phase AC - S7200

Reversible Motor Starter Circuits for Changing the Rotational Direction of Three-Phase AC Induction Motors (Tip 10)
Category: Motor Control
Version 4.0. Updated 12/98
Special Hardware Requirements: None
Project Example .
This programming example shows how to control a three-phase induction motor with two possible rotational directions.
Use the momentary contact switch at input I0.0 to start the motor counterclockwise. Use the momentary contact switch at input I0.1 to start the motor clockwise. The prerequisites are that the motor circuit breaker at input I0.3 and the OFF switch at input I0.2 are not activated. The rotational direction cannot be changed until after the OFF switch is pressed and a waiting period of 5 s has elapsed. This allows the motor to brake and start up in the opposite direction.

Program Flowchart:

Tip 10: Reversible Motor Starter Circuits for Changing the Rotational Direction of ThreeSeite 1 von 2

These tips are only a general approach to using the S7 -200 with various applications.
Your specific application may be different. It is your responsibility to use the SIMATIC S7-200 properly in your applications

You could find the program HERE