Technical data

SFBs for Compact CPUs
System Software for S7-300/400 System and Standard Functions - Volume 2/2
28-42 A5E00739858-01
Parameters Declaration Data
type
Range of
values
Default Description
SD_1:
INPUT/
OUTPUT
ANY CPU specific 0 Send parameters:
Here you enter the following
values:
5. The number of the DB
from which the data
are to be transmitted.
6. The data byte number
as of which data are to
be transmitted.
for example: DB 10 as of byte
2 -> DB10.DBB2
LEN
INPUT/
OUTPUT
INT 1 to 1024 1 Here you declare the length of
the data block that is to be
transmitted. (Length is set
here indirectly.)
Data Consistency
Data consistency is limited to 206 bytes. If you want to consistent data
transmission exceeding these 206 bytes, you must take the following into account:
Do not write to the currently used section of the send range SD_1 unless the
transmission has been terminated. This is the case when the state parameter
DONE has the value TRUE.
See also:
Additional Error Information of the SFBs 60 to 65