Command Interface
5-16
SIMATIC NET CP 243-2 AS-i Master
C79000-G8976-C142/02
5.2.4
Read_Parameter
Purpose
This call returns the current parameter value (actual parameter) of a slave.
This value must not be confused with the parameter echo that is supplied by the
AS-i slave as a reply to the write_parameter job.
Structure of the Job Data in the Send Buffer
Bank
Byte
Meaning
2
0
Command number: 03
H
2
1
AS-i slave address
Structure of the Job Data in the Receive Buffer
Bank
Byte
Meaning
Bit 7
Bit 4
Bit 3
Bit 0
2
0
Echo of the command number: 03
H
2
1
Command status
2
2
irrelevant
Parameter
Содержание SIMATIC NET CP 243-2
Страница 4: ...Preface ii SIMATIC NET CP 243 2 AS i Master C79000 G8976 C142 02 ...
Страница 8: ...Contents vi SIMATIC NET CP 243 2 AS i Master C79000 G8976 C142 02 ...
Страница 26: ...Technical Description and Installation Instructions 1 18 SIMATIC NET CP 243 2 AS i Master C79000 G8976 C142 02 ...
Страница 64: ...Access to the Data of the AS i Slaves 3 16 SIMATIC NET CP 243 2 AS i Master C79000 G8976 C142 02 ...
Страница 68: ...Signaling Errors and Diagnostics in the User Program 4 4 SIMATIC NET CP 243 2 AS i Master C79000 G8976 C142 02 ...
Страница 128: ...Command Interface 5 60 SIMATIC NET CP 243 2 AS i Master C79000 G8976 C142 02 ...
Страница 134: ...Dealing with Problems Error Displays 6 6 SIMATIC NET CP 243 2 AS i Master C79000 G8976 C142 02 ...
Страница 142: ...Notes on the CE Mark C 2 SIMATIC NET CP 243 2 AS i Master C79000 G8976 C142 02 ...
Страница 148: ...Glossary Glossary 4 SIMATIC NET CP 243 2 AS i Master C79000 G8976 C142 02 ...