Error Display on the SEND_440 FB
The DONE output shows "request completed without errors". ERROR indicates whether an error
has occurred. In STATUS the event number is displayed in the event of an error. If no error occurs
the value of STATUS is 0. DONE and ERROR/STATUS are also output in response to a RESET of FB
SEND_440. In the event of an error, the binary result BR is reset. If the block is terminated without
errors, the binary result has the status "1".
Note
The SEND_440 function block does not have a parameter check. If there are invalid parameters,
the CPU branches to the STOP mode.
Block call
STL representation LAD representation
CALL SEND_440, I_SEND_440
SEND_440, I_SEND_440
EN
REQ
R
LADDR
DB_NO
DBB_NO
LEN
ENO
DONE
ERROR
STATUS
REQ : =
R : =
LADDR : =
DB_NO : =
DBB_NO : =
LEN : =
DONE : =
ERROR : =
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".
Communication via Function Blocks
6.3 Using the Function Blocks
Point-to-point connection CP 440 Installation and Parameter Assignment
Equipment Manual, 03/2022, A5E00057742-AE 77
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