Programming
Introduction
The example consists of three parts:
● The air quality measurement and fan control in the tunnel
● The traffic light and barrier control
● The lighting control in the tunnel
The following section explains, based on flow diagrams, how the user program works.
Using an HMI screen, you can switch the fans and the lighting in the tunnel from automatic to
manual mode and, if necessary, change limit values.
The user program runs on a CPU 1517H-3 PN with SIMATIC STEP 7 Professional, Version
V15.1.
The executable user program for the example can be found in the annex to the entry on the
Internet (https://support.industry.siemens.com/cs/us/en/view/109757712).
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S7-1500R/H redundant system
Getting Started, 10/2018, A5E44910930-AA
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