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S5-115U Manual
11.1.3 Data Handling Blocks
Function blocks FB244 to FB249 make it possible to use communications processors and intelligent
I/O modules. These "data handling blocks" control data exchange between such modules and the
CPU.
Data handling blocks offer the following advantages:
•
They take up no space in the user memory.
•
Transfer from diskette is not necessary.
•
They have a short runtime.
•
No flag, timer or counter areas are needed.
Parameters
Data handling blocks use the parameters listed in Table 11-2.
Table 11-2. List of Data Handling Block Parameters
Name
SSNR
:
A-NR
:
ANZW
:
QTYP/ZTYP
:
1
:
DBNR
1
1 :
QANF/ZANF
1 :
QLAE/ZLAE
:
PAFE
2
BLGR
:
1 If these parameters are not needed for a call (e.g., for the ALL function), you can skip them when initializing the block
by pressing the <CR> key.
2 PAFE must be directly initialized.
EWA 4NEB 811 6130-02b
Meaning
Interface number (page number)
Job number
Job status word (double word)
Type of data source or data destination
Data block number
Relative start address within a type
Length of source or destination data
Parameter assignment error
Frame size
Integral Blocks
11-5
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