Siemens SIMATIC NET CP 343-2 Manual page 100

5 Using the Command Interface
5.2.29 Write_AS-i_Slave_Parameter_String
Meaning
With this call, a parameter string complying with AS-i slave profile 7.4 can be sent
to the AS-i master that passes on the string to the AS-i slave address specified in
the send buffer.
With this call, a send buffer with a maximum of 223 bytes is transferred to the AS-i
master. The actual number of parameter bytes to be sent to the AS-i slave is
calculated by the AS-i master from byte 2 of the send buf fer (number of parameter
bytes).
The remaining information in the string is not evaluated by the AS-i master and is
passed on to the AS-i slave transparently. As long as the string transfer is active,
there is no user/analog data exchange with the addressed AS-i slave.
Structure of the Job Data in the Send Buffer
Byte
0
1
2
3
4
...
...
Maximum value for n=220
100
Meaning
Command number: 40
H
Slave address
Number of parameter bytes
String byte (1)
String byte (2)
.....
String byte (n-1)
String byte (n)
CP 343−2 / CP 343−2 P AS−Interface Master
Release 08/2008
C79000−G8976−C149−04