Associated Function Blocks - Siemens SIMATIC FM 458-1 DP User Manual

Configuring

4.5.4 Associated function blocks

4-30
 For the same reason, this type of block communications can be
principally used for all types of serial and parallel data transfer routes,
where today "virtual communications" are used.
The blocks which can be used are arranged under the family names
"ZeigrKom" or "PointCom" in the CFC block Catalog.
In order to be able to simply identify and easily assign to this block group,
the blocks, whose function already corresponds to existing blocks, and
which now output a pointer for this application, have a "_P" (pointer) at
the end of the name.
Type name
CPY_P
CRV_P
CTV_P
DB_P
DRD
DRD_D
DRD_I
DRD_8
DRD_8D
DRD_8I
DRD_BY
DWR
DWR_D
DWR_I
DWR_8
DWR_8D
DWR_8I
DWD_BY
S7RD_P
S7WR_P
BRCV
Function
Copying buffer areas
Telegram block, receive (interface
processing)
Telegram block, send (interface
processing)
Data block
Data Read REAL
Data Read DINT
Data Read INT
Data Read 8*REAL
Data Read 8*DINT
Data Read 8*DINT
Data Read BYTE
Data Write REAL
Data Write DINT
Data Write INT
Data Write 8*REAL
Data Write 8*DINT
Data Write 8*INT
Data Write BYTE
Receive 128 bytes via a P bus (only
for FM 458-1 DP)
Send 128 bytes via a P bus (only for
FM 458-1 DP)
Block data receive via S7 connection
(only for FM 458-1 DP)
Application Module FM 458-1 DP - User Manual
A5E01078222-02 Edition 03.2009