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Configuring
4-36
Application Module FM 458 - User Manual
6DD1904-0AE0 Edition 12.2001
The individual connections (I/O), their data types and a connection
description are listed in the following table:
Parameter
Declaration
Data type
Description
REQTAB
INPUT
BOOL
REQTAB = 1:
Request to write a new table
REQDB
INPUT
BOOL
REQDB = 1:
Request to write the tabular values
which are saved in the data block
LASTDB
INPUT
BOOL
Last DB for the table
LADDR
INPUT
WORD
Logical address of the SIMATIC FM 458 application
module
RECNUM
INPUT
BYTE
Data set number for the read and write data set
DBNUM
INPUT
WORD
Data block number of the DB in which the tabular values
are located.
TFT
INPUT
DWORD
TIMEOUT time in ms for receiving acknowledge
telegrams from the SIMATIC FM 458 application module.
TABTEL
OUTPUT
WORD
Number of data blocks required to transfer the complete
DB contents
CNTTEL
OUTPUT
WORD
Number of data blocks already transferred to the FM
module
STATUS
OUTPUT
WORD
Indicates the current status of the processing / data
transfer:
0:
Table transfer is inactive
1:
Table transfer is active.
Table values have been partially transferred
from a DB
(wait for the next partial transfer)
2:
Table values have still not been completely
transferred from a data block.
ERROR
OUTPUT
WORD
If a fault/error occurs while processing the function, then
the return value is an error code
DONE
OUTPUT
BOOL
Status parameter DONE=1: Send operation has been
completed
I/O
Содержание SIMADYN D FM 458
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