Pepperl+Fuchs VBG-PB-K20-DMD-C1, Руководство пользователя

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AS-i/PROFIBUS-Gateway
Command Interface
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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2007
71
10.3.2 Commands acc. to Profile S-7.4/S-7.5
10.3.2.1 Overview of the commands
Values for command
10.3.2.2 WR_74_75_PARAM
Description:
• with this function the parameter string of a slave according to profile S-7.4 is be-
ing written
or
• the data tranfer with a slave according to profile S-7.5 is started.
If it is about a slave according to profile 7.5, data have to be registered into the buff-
er in the same form, as they have to be sent by AS-i.
Since the string can be longer than the command interface, it will partly be written
into the buffer and then be transferred to the slave.
n is the length of the part of the string which should be written into the buffer from
index i on.
If i
≡
0, then the string is being transferred to the slave.
see page Command Value Meaning
Req
Len Res
Len
page 71 WR_74_75_PARAM
5A
16
Write S-7.4/S-7.5-slave parameter
≥
6 2
page 72 RD_74_75_PARAM
5B
16
Read S-7.4/S-7.5-slave parameter 4
≥
3
page 73 RD_74_75_ID
5C
16
Read S-7.4/S-7.5-slave ID string 4
≥
3
page 73 RD_74_DIAG
5D
16
Read S-7.4/S-7.5-slave diagnosis
string
4
≥
3
Request
byte
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
1 5A
16
2 T – circuit
3 slave address
4 i
5 n
6 buffer btye i
… …
n+5 buffer byte i+n-1
Response
byte
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
1 5A
16
2 T results