Siemens SIMATIC S5 TD 390 Manuel page 99

DW Entry Explanation
12 Time DB / start DW (only on CPU 928B and CPU 948).
DB No. and offset in the DB for time information (for explana-
tion, refer to Programming Instructions for your CPU).
Note
To set and read the time, the same range must be used in the time
DB (e.g. DW0 in DBxy to set and read)
DL: DB No. Block number 1 to 255
DR: DW No. Start DW 0 to 252
13 EEEE End identifier (format KH).
This identifier is checked by the TD 390. The parameters are
evaluated up to here. All the following data in this DB are freely
available.
Legend:
TD 390
C79000–K8576–C292–01
Creating a PLC Program for the TD 390
DL = left byte
DR = right byte
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