n the sending CPU issues multiple calls to SFC 65 with different REQ_ID parameters
and the data is transferred to a single communication partner.
n more than one sending CPU are transferring data to a communication partner by
means of the SFC 65.
Receive data can be saved into different memory blocks by analyzing the REQ_ID
parameter.
Data consistency
Since send data is copied into an internal buffer of the operating system when the first
call is issued to the SFC it is important to ensure that the send buffer is not modified
before the first call has been completed successfully. Otherwise an inconsistency could
occur in the transferred data.
Any write-access to send data that occurs after the first call is issued does not affect the
data consistency.
The return value contains an error code if an error is detected when the function is being
processed.
The "real error information" that is contained in the table "specific error information" a. o.
may be classified as follows:
Value Description
809xh Error on the CPU where the SFC is being executed.
80Axh Permanent communication error.
80Bxh Error on the communication partner.
80Cxh Temporary error.
Value Description
0000h Processing completed without errors.
7000h First call with REQ = 0: no data transfer is active; BUSY is set to 0.
7001h First call with REQ = 1: data transfer initiated; BUSY is set to 1.
7002h Intermediate call (REQ irrelevant): data transfer active; BUSY is set to 1.
8090h The specified target address of the communication partners is not valid, e.g.
n bad IOID
n bad base address exists
n bad MPI-address (> 126)
8092h Error in SD or RD, e.g.:
n illegal length for SD
n SD = NIL is not permitted
8095h The block is already being processed on a priority class that has a lower priority.
80A0h Error in received acknowledgement.
80A1h Communication failures: SFC-call after an existing connection has been terminated.
80B1h ANY-pointer error. The length of the data buffer that must be transferred is wrong.
RET_VAL (Return value)
Specific error information:
VIPA SPEED7
Integrated Standard
System Functions > SFC 65 - X_SEND - Send data
HB00 | OPL_SP7 | Operation list | en | 18-30 704
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