Index tables of the TwinCAT ADS system services
|
Index-Group |
Index offset |
Access |
Data type |
Phys. unit |
Def. range |
Description |
|---|---|---|---|---|---|---|
|
0x0000F003 |
0x00000000 |
R&W |
W:UINT8[n] R: UINT32 |
GET_SYMHANDLE_BYNAME The name contained in the write data is assigned a handle (characteristic value) and returned to the caller as a result. | ||
|
0x0000F004 |
0x00000000 |
R&W W R |
UINT8[n] UINT8[n] |
READ_SYMVAL_BYNAME The value of a named variable is read from the device. The variable names are specified while this write and read service is called. The response contains the variable value. | ||
|
0x0000F005 |
0x00000000- 0xFFFFFFFFFF =symHandle |
R/W |
UINT8[n] |
READ_/WRITE_SYMVAL_BYHANDLE Reading of the value of the variable identified by 'symHdl', or allocating a value to the variable. Prior to this, ‚symHdl' must have been determined via the GET_SYMHNADLE_BYNAME service. | ||
|
0x0000F006 |
0x00000000- 0xFFFFFFFFFF =symHandle |
W |
UINT32 |
RELEASE_SYMHANDLE The characteristic number contained in the write data (handle) for a named variable to be queried is enabled. |