ERROR STATUS
(decimal)
Description
1 1 Communication failures, e.g.
n Connection parameters not loaded (local or remote)
n Connection interrupted
(e.g. cable, CPU turned off, CP in STOP)
1 4 Error in receive buffer pointer RD_i with respect to the
length or the data type.
1 10 Access to local application memory not possible (e.g.
access to deleted DB).
1 12 The call to the FB/SFB
n contains an instance DB that does not belong to the
FB/SFB 9
n contains a global DB instead of an instance DB
n could not locate an instance DB
(load a new instance DB from the PG)
1 18 R_ID already exists in the connection ID.
1 19 The respective FB/SFB USEND transmits data quicker
than FB/SFB URCV can copy the data into the receive
buffers.
1 20 Not enough memory.
The data are received consistently if you remember the following points:
n Siemens S7-300 Communication:
– After the status parameter NDR has changed to the value 1, you must immedi-
ately call FB 9 URCV again with the value 0 at EN_R. This ensures that the
receive area is not overwritten before you have evaluated it. Evaluate the receive
area (RD_1) completely before you call the block with the value 1 at control input
EN_R).
n Siemens S7-400 Communication:
– After the status parameter NDR has changed to the value 1, there are new
receive data in your receive areas (RD_i). A new block call may cause these data
to be overwritten with new receive data. If you want to prevent this, you must call
SFB 9 URCV (such as with cyclic block processing) with the value 0 at EN_R until
you have finished processing the receive data.
Data consistency
VIPA SPEED7
Network Communication
Ethernet Communication > FB/SFB 9 - URCV - Uncoordinated data reception
HB00 | OPL_SP7 | Operation list | en | 18-30 157
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