Since the transferred data can be longer than the command interface, it is written
into the buffer. The content of the buffer can be read in parts from index.
n is the length of the part string, that (from Index (i)) should be written in the buffer.
The transmission proceeds, if i=0.
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...
x
1. Following commands are supported:
1: S-7.4 ID string Read (no sent data required).
2: S-7.4 Diag String Read (no sent data required).
3: S-7.4 Param String Read (no sent data required).
4: S-7.4 Param String Write (buffer contains sent string).
5: S-7.5 Transfer. Buffer contains sent string in the same form, as the telegram,
that have to be sent over AS-i.
6: S-7.5 Cyclic 16-Bit Slave Configuration Read (analog/transparent bits are
cancelled in the response). The cyclic 16-bit configuration cannot be detected,
if the response is 08h.
7: Safety Monitor sorted Read (no sent data required).
8: Safety Monitor unsorted (all devices) Read (no sent data required).
Please view the <chapter 8.2.3.2 Monitor Diagnosis> for further information.
Byte
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Subject to reasonable modifications due to technical advances.
Pepperl+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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AS-i/PROFIBUS Gateway
Command Interface
Request
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4Eh
circuit
slave
buffer Index (i) high
buffer Index (i) low
1
command
number of(n)
data
...
data+n
Response
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2
4E
16
response
Copyright Pepperl+Fuchs, Printed in Germany
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