S5-100U
The Integral Real-Time Clock
12.2.2 Reading the Current Clock Time and the Current Date
Proceed as follows to see how and with which values the clock runs.
1.
Perform an overall reset.
2.
Output DB1 to the programmer.
3.
Overwrite both (#) comment characters with a blank space.
4.
Generate DB5 with DW0 to DW21. See Table 12-3 for information about storing the current
clock time and current date.
5.
Switch the programmable controller from STOP to RUN. The clock accepts the values present
in DB1.
6.
Enter DB5 and DW0 to DW3 on the programmer by using the FORCE VAR function.
7.
Press the “ENTER” key twice. The clock runs using the current values.
Table 12-1. Reading the Current Clock Time and Current Date
Signal States
Operand
Explanation
DB 5
DW 0
DW 1
DW 2
DW 3
KH = 0004
KH = 0104
KH = 9212
KH = 0000
Wednesday
October 1
1992, 12:00
EWA 4NEB 812 6120-02b
12-3
Summary of Contents for SIMATIC S5-100U
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Page 21: ...1 The SIMATIC S5 System Family EWA 4NEB 812 6120 02b ...
Page 22: ...Figures 1 1 Members of the SIMATIC S5 System Family 1 1 EWA 4NEB 812 6120 02b ...
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Page 505: ...B Dimension Drawings EWA 4NEB 812 6120 02b ...
Page 515: ...C Active and Passive Faults in Automation Equipment EWA 4NEB 812 6120 02b ...
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Page 523: ...D Information for Ordering Accessories EWA 4NEB 812 6120 02b ...
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Page 531: ...E Reference Materials EWA 4NEB 812 6120 02b ...
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Page 535: ...F Siemens Addresses Worldwide EWA 4NEB 812 6120 02b ...
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Page 543: ...Index EWA 4NEB 812 6120 02b ...
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