Warranty, Liability and Support
Time switch based on the S7-300/400 CPUs with simple HMI system
including radio-controlled clock connection
Rev. B - final 19.07.2002 12/84
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BID21669756_Zeitschaltuhr_einfach_DOKU_v20_e.doc
2 Automation Solution
The automation problem described in chapter 1 can be solved with
standard hardware and software components (SIEMENS) plus the user's
own customized software.
The SIMATIC S7, together with a monitoring and control unit (SIMATIC
OP/TP), is useful for executing the automation task.
Based on the used standard HW/SW components, as well as the compiled
application software, data are exchanged between S7-CPU and HMI
system via an MPI bus system.
Both the diagrams below give you an overview of all the components
involved. Figure 2-1 shows you the standard components. Connecting the
HVAC devices to the S7-CPU via the distributed I/O was not looked into in
this application, and is thus only outlined schematically. Figure 2-2 shows
you the user software developed for this application.
Fig. 2-1 Standard hardware components
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