Siemens CPU 948 User Manual

10.8 RECEIVE TEST Function (OB 205)
10.8.1
Function The RECEIVE TEST function determines the number of occupied
memory fields in the buffer of the COR 923C coordinator. Depending
on this number m, the RECEIVE function can be called m times to
receive m data fields.
10.8.2
Call Parameters
Structure of the (parameter)
data field
Before calling OB 205, you must specify the input parameters in the
data field. OB 205 requires 4 F flag bytes in the data field for input
and output parameters:
FY x + 0: transmitting CPU input parameter
FY x + 1: — not used
FY x + 2: condition code byte output parameter
FY x + 3: receiving capacity output parameter
ACCU-1-L When calling OB 204, 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
10.8.3
Input Parameters
Transmitting CPU The CPU’s own number and the number of the transmitting CPU identify
the link for which the receiving capacity is determined.
10.8.4
Output Parameters
Condition code byte This byte indicates whether the RECEIVE TEST function was executed
correctly and completely.
Initialization conflict Has no significance with the RECEIVE TEST function.
RECEIVE TEST Function (OB 205)
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