Siemens SIMATIC S5 CP 521 Manual page 96

CP 521
Example: Reading the current time of day
The module is installed in slot 7 (initial address 120).
The clock data is to be output on digital output modules from address 8.
STL FB 100
NAME :UHRDATEN
:L IEB 121
:T QB 8
:L IW 122
:T QW 9
:L EW 124
:T AW 11
:L EW 126
:T AW 13
:BE
Note:
You can also evaluate the following messages using the integrated clock:
• Clock defective (1X
This error evaluation is only relevant after a restart.
• Default time set (2X
This evaluation is only only meaningful if you are operating the CP 521
without a backup battery.
• Time of day or date error (3X
This error evaluation is only meaningful after you have set the clock.
GWA 4NEB 812 6030-02b
Reading the current clock data and transferring it
to the digital output modules.
)
H
)
H
)
H
Print Mode
Explanation
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