Siemens SIMATIC CP 440 Manual page 99

What To Do
Block Call
STL Representation
CALL RECV_440, I_RECV_440
EN_R:
R:
LADDR:
DB_NO:
DBB_NO:
NDR:
ERROR:
LEN:
STATUS:
Note
The parameters EN and ENO are only present in the graphical representation
(LAD or FBD). The block is started with EN = TRUE. If the function is completed
without errors, ENO = TRUE is set. To process these parameters, the compiler
uses the binary result BR. The binary result is set to the signal state "1" if the block
was terminated without errors. If there was an error, the BR is set to "0".
Assignment in the Data Area
The RECV_440 FB works with an instance DB (I_RECV_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#1E0E occurs, you can consult the
SFCERR variable for more details of the error (see Section 8.3). This error
variable can only be loaded via a symbolic access to the instance DB.
Point-to-point connection CP 440 Installation and Parameter Assignment
A5E00057742-02
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Communication Using Function Blocks
LAD Representation
RECV_440, I_RECV_440
EN ENO
EN_R NDR
R ERROR
LADDR LEN
DB_NO STATUS
DBB_NO L_TYP
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