Time switch based on the S7-300/400 CPUs with simple HMI system
including radio-controlled clock connection
Rev. B - final 19.07.2002 41/84
Copyright © Siemens AG 2005 All rights reserved
BID21669756_Zeitschaltuhr_einfach_DOKU_v20_e.doc
• holiday of “BOOL“ type
Value = 1: current day is a holiday or special day
Value = 0: current day is no holiday or special day
The block for recognizing holidays and special days “holidays” FC100 is
parameterized as illustrated below:
Fig. 4-14 Configuration “recognizing holidays and special days“
4.4 HMI System
The HMI system used in this example is an OP3 or alternatively a TP170A.
Note
Only two of the user interfaces are described here as an example. A detailed
description is available in Chapter 6.
4.4.1 Operation at the OP3
The SIMATIC HMI device OP3 is a text-based display of the lower
performance range.
7 views of time switching functions are available on the OP3:
• One-day time switch
• Seven-day time switch
• One-month time switch
• One-year time switch
• Relative time switch
• Summer/wintertime changeover
• Holidays
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