Siemens SIMATIC S5-95F - The Integral Real-Time Clock

10 The Integral Real-Time Clock
10.1 Operating Principle and Parameterization of the Integral
Real-Time Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10- 1
10.1.1 Setting the Clock Parameters in DB1 . . . . . . . . . . . . . . . . . . . . . . 10- 1
10.1.2 Operating Principle of the Clock . . . . . . . . . . . . . . . . . . . . . . . . . 10- 1
10.1.3 Transfer and Battery Backup of Clock Parameters . . . . . . . . . . . . 10- 2
10.1.4 Entering the Clock Time Correction Factor . . . . . . . . . . . . . . . . . . 10- 2
10.2 Structure of the Clock Data Area . . . . . . . . . . . . . . . . . . . . . . . . . 10- 3
10.3 Structure of the Status Word and How to Scan it . . . . . . . . . . . . . 10- 6
10.4 Using the Programmer to Read and Set the Integral
Real-Time Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10- 9
10.5 Programming the Integral Real-Time Clock in the
Control Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10- 10
10.5.1 Reading and Setting the Clock . . . . . . . . . . . . . . . . . . . . . . . . . . 10- 10
10.5.2 Storing the Updated Time/Date after a RUN to STOP
or RUN to POWER OFF Transition . . . . . . . . . . . . . . . . . . . . . . . 10- 14
10.5.3 Setting the Prompt Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10- 14
10.5.4 Setting the Operating Hours Counter . . . . . . . . . . . . . . . . . . . . . . 10- 18
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EWA 4NEB 812 6210-02