Siemens SIMATIC S5-115U, User Manual

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Integral Blocks S5-115U Manual
The SEND Block - FB244 -
FB244 requests that data be sent to a module with page addressing.
A distinction is made between two function modes:
•
SEND All
The function block is a substitute for direct memory access.
• SEND Direct
Data is sent for a specific job.
Calling Function Block FB244
CSF/LAD STL
: JC FB 244
NAME : SEND
SSNR : KY 0,10
A-NR : KY 0,32
ANZW : FW 14
QTYP : KS DB
DBNR : KY 0,10
QANF : KF +1
QLAE : KF +33
PAFE : FY 13
:
***
FB244
SEND
SSNR PAFE
A-NR
ANZW
QTYP
DBNR
QANF
QLAE
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Description of the SEND ALL Function
For the SEND ALL function, the block requires the following parameters:
•
SSNR - interface number
• A-NR - job number (assign "0")
• ANZW - job status word
• PAFE - parameter assignment error byte
All other parameters are irrelevant for this job. The CP uses the communications area to provide
the following information:
•
address of the job status word
• type of data
• amount of data
• start address of the data area
The following bits are evaluated or set/reset in the job status word for the pertinent job:
•
data transfer disabled
• data transfer completed
• data transfer in progress
The SEND block enters the number of bytes transferred in the data word that follows the job
status word.
11-20
EWA 4NEB 811 6130-02b