High Performance OPC UA Server SDK
1.2.1.203
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Possible values for the accesslevel attribute of variable nodes. More...
Macros | |
#define | UA_ACCESSLEVEL_NONE 0x0 |
The Variable value cannot be accessed and has no event history. More... | |
#define | UA_ACCESSLEVEL_CURRENTREAD 0x1 |
The current value of the Variable may be read. More... | |
#define | UA_ACCESSLEVEL_CURRENTWRITE 0x2 |
The current value of the Variable may be written. More... | |
#define | UA_ACCESSLEVEL_CURRENTREADWRITE 0x3 |
The current value of the Variable may be read and written. More... | |
#define | UA_ACCESSLEVEL_HISTORYREAD 0x4 |
The history for the Variable may be read. More... | |
#define | UA_ACCESSLEVEL_HISTORYWRITE 0x8 |
The history for the Variable may be updated. More... | |
#define | UA_ACCESSLEVEL_HISTORYREADWRITE 0xC |
The history value of the Variable may be read and updated. More... | |
#define | UA_ACCESSLEVEL_SEMANTICCHANGE 0x10 |
The variable generates SemanticChangeEvents. | |
#define | UA_ACCESSLEVEL_STATUSWRITE 0x20 |
The variable value StatusCode is writable. | |
#define | UA_ACCESSLEVEL_TIMESTAMPWRITE 0x40 |
The variable value SourceTimestamp is writable. | |
Possible values for the accesslevel attribute of variable nodes.
Multiple accesslevels can be combined using the bitwise OR operator.
#define UA_ACCESSLEVEL_CURRENTREAD 0x1 |
The current value of the Variable may be read.
#define UA_ACCESSLEVEL_CURRENTREADWRITE 0x3 |
The current value of the Variable may be read and written.
#define UA_ACCESSLEVEL_CURRENTWRITE 0x2 |
The current value of the Variable may be written.
#define UA_ACCESSLEVEL_HISTORYREAD 0x4 |
The history for the Variable may be read.
#define UA_ACCESSLEVEL_HISTORYREADWRITE 0xC |
The history value of the Variable may be read and updated.
#define UA_ACCESSLEVEL_HISTORYWRITE 0x8 |
The history for the Variable may be updated.
#define UA_ACCESSLEVEL_NONE 0x0 |
The Variable value cannot be accessed and has no event history.