Siemens SIMATIC NET CP 343-2 Manual page 64

5 Using the Command Interface
5.2.3 Write_Parameter
Purpose of the Command
The AS-i slave parameter value transferred with the command is passed on to the
addressed AS-i slave.
The parameter is stored on the CP 343-2 only temporarily and is not entered as a
configured parameter in the EEPROM!
The AS-i slave transfers its current parameter value in the response (parameter
echo). This can deviate from the value that has just been written according to the
AS-i master specification (/2/). The AS-i slave response is returned as a parameter
echo in the response data.
This call is not permitted for AS-i slaves that comply with the AS-i slave standard
profile 7.4. For these slaves, the AS-i master handles the AS-i slave parameter
assignment itself.
Structure of the Job Data in the Send Buffer
Byte
0
1
2
Structure of the Response Data in the Receive Buffer
Byte
0
64
Bit 7
0
Bit 7
0
Meaning
Bit 4 Bit 3
Command number: 02
H
Slave address
Meaning
Bit 4 Bit 3
CP 343−2 / CP 343−2 P AS−Interface Master
Bit 0
Parameter
Bit 0
Parameter echo
Release 08/2008
C79000−G8976−C149−04