Siemens CPU 948 User Manual

10.6 SEND TEST Function (OB 203)
10.6.1
Function The SEND TEST function determines the number of free memory
fields in the buffer of the COR 923C coordinator.
Depending on this number m, the SEND function can be called m
times to transfer m data fields.
10.6.2
Call Parameters
Structure of the (parameter)
data field
Before calling OB 203, you must specify the input parameters in the
data field. OB 203 requires 4 F flag bytes in the data field for input
and output parameters:
FY x + 0: receiving CPU input parameter
FY x + 1: — not used
FY x + 2: condition code byte output parameter
FY x + 3: transmitting capacity output parameter
ACCU-1-L When OB 203 is called, transfer the flag byte number at which the
parameter data field begins to ACCU-1-L:
ACCU-1-LH: 0
ACCU-1-LL: 0 to 246
10.6.3
Input Parameters
Receiving CPU The CPU’s own number and the number of the receiving CPU identify
the link for which the transmitting capacity is determined.
10.6.4
Output Parameters
Condition code byte This byte indicates whether the SEND TEST function was executed
correctly and completely.
SEND TEST Function (OB 203)
CPU 948 Programming Guide
C79000-G8576-C848-04
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Siemens CPU 948 Specifications

General

Brand	Siemens
Model	CPU 948
Category	Controller
Language	English