Time switch based on the S7-300/400 CPUs with simple HMI system
including radio-controlled clock connection
Rev. B - final 19.07.2002 80/84
Copyright © Siemens AG 2005 All rights reserved
BID21669756_Zeitschaltuhr_einfach_DOKU_v20_e.doc
9.4 How can I save on Instance DBs?
Table 9-4 Saving on Instance-DBs
Step Instruction Note / Instruction
1
Create a new FB in the block container of
the SIMATIC Manager and open it.
2
Create static variables (instances). The
type of the static variable corresponds to
the time function for the one-day time
switch e.g. FB120.
3
Call the instances in the block as often as
the time functions are required.
4 Save the newly created FB.
5
Now call this FB in your user program
e.g. OB1.
7 Save
8
Choose PLC -> Download
Or download symbol
Further information on so-called multi-instances are also available in the
STEP 7 online-help.
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