AS-i EtherNet/IP Gateway
Command Interface
Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany
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Issue date - 24.4.2007
63
8.3.2 Commands acc. to Profile S-7.4/S-7.5
8.3.2.1 Overview of the commands
8.3.2.2 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.
Values for command
see page Command Value Meaning
Req 
Len
Res 
Len
page 63 WR_74_75_PARAM
5A
16
Write S-7.4/S-7.5-slave parameter ≥62
page 64 RD_74_75_PARAM
5B
16
Read S-7.4/S-7.5-slave parameter 4 ≥3
page 65 RD_74_75_ID
5C
16
Read S-7.4/S-7.5-slave ID string 4 ≥3
page 65 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
15A
16
2T – circuit
3 slave address
4i
5n
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
15A
16
2T results