Siemens SIMATIC CP 440 Manual page 100

Communication Using Function Blocks
Parameters of the RECV_440 FB
The following table lists the parameters of the RECV_440 FB.
Table 6-3 Parameters of the RECV_440 FB
Name Type
EN_R INPUT
R INPUT
LADDR INPUT
DB_NO INPUT
DBB_NO INPUT
1
NDR OUTPUT
1
ERROR OUTPUT
1
LEN OUTPUT
1
STATUS OUTPUT
1
The parameter is available until the next call of the FB!
6-12
Data Type Comment
BOOL Enables reading of data
BOOL Aborts job
INT Basic address of CP 440
INT Data block number
INT Data byte number
BOOL Job completed without
errors, data accepted
BOOL Job completed with errors
INT Length of message frame
received
WORD Specification of the error
Point-to-point connection CP 440 Installation and Parameter Assignment
Permitted Values,
Comment
Current job is aborted. Receiving
is disabled.
The basic address can be found
in the configuration table in
STEP 7.
Receive DB No.:
CPU-specific, zero is not
allowed
Offset is CPU-specific
STATUS parameter == 16#00;
STATUS parameter contains
error details
1 LEN 200, specified
in number of bytes
If ERROR == 1, STATUS
parameter contains error
information
A5E00057742-02