The Integral Real-Time Clock
S5-100U
12.7.3 Programming the Operating Hours Counter
You can enable the operating hours counter with bit 9 of the status word. This allows you to
establish, for example, the number of hours a motor has been in operation. The operating hours
counter is active only in the RUN mode.
Transferring Settings to the Operating Hours Counter
You can preset the operating hours counter with a certain start value (e.g. after exchanging the
CPU).
•
The clock data must be transferred in BCD code.
TIP: The “KC” data format loads a BCD constant into ACCU 1 and is therefore especially
suitable for entering the settings.
•
If you do not want a value (for example minutes) to be transferred, entering the relevant byte as
“255
D
” or “FF
H
”. The current value for this variable is then retained.
•
After you have transferred the settings to the clock data area, you must set bit 10 in the status
word for the clock to accept the clock data.
•
Bit 8 in the status word displays incorrect settings.
12-30
EWA 4NEB 812 6120-02b
Summary of Contents for SIMATIC S5-100U
Page 6: ...EWA 4NEB 812 6120 02b ...
Page 16: ...EWA 4NEB 812 6120 02b ...
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 ...
Page 23: ......
Page 27: ......
Page 36: ...EWA 4NEB 812 6120 02b ...
Page 40: ......
Page 41: ......
Page 42: ......
Page 43: ......
Page 48: ......
Page 49: ......
Page 50: ......
Page 102: ...EWA 4NEB 812 6120 02b ...
Page 156: ...EWA 4NEB 812 6120 02b ...
Page 232: ...EWA 4NEB 812 6120 02b ...
Page 268: ...EWA 4NEB 812 6120 02b ...
Page 272: ...EWA 4NEB 812 6120 02b ...
Page 336: ...EWA 4NEB 812 6120 02b ...
Page 352: ...EWA 4NEB 812 6120 02b ...
Page 412: ...EWA 4NEB 812 6120 02b ...
Page 482: ...EWA 4NEB 812 6120 02b ...
Page 484: ...EWA 4NEB 812 6120 02b ...
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 ...
Page 516: ...EWA 4NEB 812 6120 02b ...
Page 522: ...EWA 4NEB 812 6120 02b ...
Page 523: ...D Information for Ordering Accessories EWA 4NEB 812 6120 02b ...
Page 524: ...EWA 4NEB 812 6120 02b ...
Page 530: ...EWA 4NEB 812 6120 02b ...
Page 531: ...E Reference Materials EWA 4NEB 812 6120 02b ...
Page 532: ...EWA 4NEB 812 6120 02b ...
Page 534: ...EWA 4NEB 812 6120 02b ...
Page 535: ...F Siemens Addresses Worldwide EWA 4NEB 812 6120 02b ...
Page 536: ...EWA 4NEB 812 6120 02b ...
Page 542: ...EWA 4NEB 812 6120 02b ...
Page 543: ...Index EWA 4NEB 812 6120 02b ...
Page 544: ...EWA 4NEB 812 6120 02b ...
Page 550: ...EWA 4NEB 812 6120 02b ...