Table 6-3 Parameters Of The Send_440 Fb - Siemens SIMATIC S7-400 CP 440 Installation And Parameter Assignment

Communication via Function Blocks
6.3 Using the Function Blocks
Assignment in the Data Area
The SEND_440 FB works with an instance DB (I_SEND_440). The DB number is specified in
the call. The data in the instance DB cannot be accessed.
Note
Exception: If the error STATUS == W#16#1E0F occurs, you can consult the SFCERR
variable for more details of the error. This error variable can only be loaded via a symbolic
access to the instance DB.
Parameters of the SEND_440 FB
The following table lists the parameters of the SEND_440 FB.
Table 6-3 Parameters of the SEND_440 FB
Name
REQ
R
LADDR
DB_NO
DBB_NO
LEN
DONE
1
ERROR
1
STATUS
1
The parameter is available until the next call of the FB!
1
92
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Type Data type
INPUT BOOL
INPUT BOOL
INPUT INT
INPUT INT
INPUT INT
INPUT INT
OUTPUT BOOL
OUTPUT BOOL
OUTPUT WORD
Description
Initiates request with
positive edge
Aborts request
Basic address of CP 440
Data block number
Data byte number
Data length
Request completed without
errors
Request completed with
errors
Error specification
Point-to-point connection CP 440 Installation and Parameter Assignment
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Permitted Values
Comment
Current request is aborted.
Sending is blocked.
The basic address is taken from
STEP 7.
Send DB No.: CPU-specific,
zero is not allowed
0 ≤ DBB_NO ≤ 8190 Transmitted
data as of data word;
Offset is CPU-specific
1 ≤ LEN ≤ 400 (Page 86),
specified in number of bytes
Parameters
STATUS == 16#00;
STATUS parameter contains error
details
If ERROR == 1, STATUS
parameter contains error details
Manual, 09/2007, A5E00057742-03