Manual BG41/BG42/BG43 Software
Rev. 99/49 4-79
ANZW
Display Word. The display word occupies a word. In the right byte status bits are
filed. In the left byte a wrong number is filed, when the identifier “finished with
error“ appears in the right byte.
The status identifiers in the right byte are structured as follows:
Bit 0: Not used
Bit 1: Job is running
Bit 2: Finished without an error
Bit 3: Finished with an error, → Error number in the left byte
Bit 4: Interface momentarily occupied
Bit 5-7:Not used
At the polling of the interface building block the data handling block imports only
as many bytes, as were parametrized as block size on the data handling block
SYNCHRON.
Due to these reasons the data handling block RECEIVE-ALL must often be
loaded several times, in order to import a complete telegram from the interface
building block. If the data handling block has one or more data blocks but has not
yet imported the last data block from the interface building block, it places as an
identifier for “job running“ bit 1 in the right byte of the display word.
If all data blocks have been correctly imported from the interface building block,
the data handling block places as identifcation for "finished without an error" the
bit 2 in the right byte of the display word.
If the telegram could not be imported from the interface building block, e.g. the
telegram is too long, the data handling block places as identifier for "finished
with error" the bit 3 in the right byte of the display word. In this case an error
number is then in the left byte of the display word.
Error code, delivered by ANZW:
05 Telegram header contains invalid target type
09 Receiver does not answer with DLE
14 Wrong telegram header (the first 2 bytes)
15 Transmission terminated by receiver
16 Wrong command code 2. letter (invalid target area)
20 DB error (DB0 used, DB too long, DB not available)
21 Receiver does not answer within QVZ (Timeout on SSM building block)
22 Wrong command code 1. letter (invalid source area)
23 QVZ in connection set-up
50 Coordination flag set
52 Data length greater than 128 bytes
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