Pepperl+Fuchs VBG-CCL-G4F, Руководство пользователя

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AS-Interface
Mailbox
Subject to reasonable modifications due to technical advances. Copyright Fuchs, Printed in Germany
Fuchs Group · Tel.: Germany (6 21) 7 76-0 · USA (3 30) 4 25 35 55 · Singapore 7 79 90 91 · Internet http://www.pepperl-fuchs.com
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9.1.2.35 RD_74_ID
With this function the ID string of a slave according to profile S-7.4 is read. Becau-
se the string can be longer as the mailbox, it is written into the buffer. The content
of the buffer can read in parts from index i.
The first byte of the bufferis the length of the read string.
If i
≡
0, then the string is read from the slave, otherwise the function responses out
of the memory, trough which the data can be read consistently.
9.1.2.36 RD_74_DIAG
With this function the diagnosis string of a slave according to profile S-7.4 is read.
Because the string can be longer as the mailbox, it is written into the buffer. The
content of the buffer can read in parts from index i.
The first byte of the bufferis the length of the read string.
Response
byte
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
1 5B
16
2 T result
buffer byte i
… …
n+2 buffer byte i+n-1
Request
byte
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
1 5C
16
2 T – circuit
3 slave address
4 i
Response
byte
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
1 5C
16
2 T result
buffer byte i
… …
n+2 buffer byte i+n-1