SFC 22        Create DB

With this system function you can create a DB while runtime. The area of the number of the new DB you specify with the parameter LOW_LIMIT and UP_LIMIT. The number of the really created DB is given back by the parameter DB_NUMBER. By the parameter COUNT that has to be even you specify the size of the DB that shall be created.

The Out-parameter RET_VAL can have the following values:

W#16#0000: no errors

W#16#80A1: LOW_LIMIT = 0 or bigger than UP_LIMIT

W#16#80A2: COUNT = 0 or uneven

W#16#80B1: No DB created because no number free.

The other realized error cases in a S7 are not realized.

See also:

Delete a DB

System Functions