Time switch based on the S7-300/400 CPUs with simple HMI system
including radio-controlled clock connection
Rev. B - final 19.07.2002 77/84
Copyright © Siemens AG 2005 All rights reserved
BID21669756_Zeitschaltuhr_einfach_DOKU_v20_e.doc
8 HMI Interface
There are no scripts in the HMI configuration. The views are explained in
detail in Chapter 6. Therefore this chapter is kept very short.
9 Changes in the STEP 7 Programs
The steps to be performed to adapt the application to your requirements
are listed below. These include:
• What to do if a second time switch of the same type is needed? (Chapter
9.1)
• How can I get several switch-on/off times into one block? (Chapter 9.2)
• What to do if more holidays or special days are needed? (Chapter 9.3)
• How can I save on Instance DBs? (Chapter 9.4)
9.1 What to do if a second time switch of the same type is needed?
The respective FB must be called a second time with new parameters.
Table 9-1 Second time switch of the same type
Step Instruction Note / Instruction
1
Open the block from which the time
function is to be called, e.g. OB1.
2
Call the time function twice and supply
the interface with your parameters.
Note:
The parameters are assigned to data
areas, which have the structure of the
required UDT.
3 Save
4
Choose PLC -> Download
Or download symbol
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