ItpReadZeroShiftEx
The function block ItpReadZeroShiftEx reads the shift components X, Y and Z for the given zero offset shift.
Inputs
VAR_INPUT
bExecute : BOOL;
nZsNo : UDINT;
tTimeOut : TIME;
END_VARName | Type | Description |
|---|---|---|
bExecute | BOOL | A rising edge starts the read operation. |
nZsNo | UDINT | Number of the zero offset shift. G54 to G59 are zero offset shifts at the NC. The valid range of values for 'nZsNo' is therefore from 54 to 59. |
tTimeOut | TIME | ADS Timeout-Delay |
/
Inputs/Outputs
VAR_IN_OUT
sNciToPlc : NCTOPLC_NCICHANNEL_REF;
sZeroShiftDesc : ZeroShiftDesc;
END_VAR Name | Type | Description |
|---|---|---|
sNciToPlc | NCTOPLC_NCICHANNEL_REF | The structure of the cyclic channel interface from the NCI to the PLC. This structure is read-only (type: NCTOPLC_NCICHANNEL_REF). |
sZeroShiftDesc | ZeroShiftDesc | The structure containing the components of the zero offset shift |
Outputs
VAR_OUTPUT
bBusy : BOOL;
bErr : BOOL;
nErrId : UDINT;
END_VAR Name | Type | Description |
|---|---|---|
bBusy | BOOL | This output remains TRUE until the function block has executed a command, but at the longest for the duration supplied to the 'Timeout' input. While Busy = TRUE, no new command will be accepted at the inputs. Please note that it is not the execution of the service but its acceptance whose time is monitored. |
bErr | BOOL | This output is switched to TRUE as soon as an error occurs during the execution of a command. The command-specific error code is contained in 'nErrId'. Is reset to FALSE by the execution of a command at the inputs. |
nErrId | UDINT | Contains the command-specific error code of the most recently executed command. Is reset to 0 by the execution of a command at the inputs. The error numbers in ErrId can be looked up in the ADS error documentation or in the NC error documentation (error codes above 0x4000). |
TYPE ZeroShiftDesc:
STRUCT
fShiftX : LREAL;
fShiftY : LREAL;
fShiftZ : LREAL;
END_STRUCT
END_TYPE  | For reasons of compatibility, there are two entries (coarse and fine) for each axis in each zero offset shift (e.g. G54). These two entries must be added together. This function block evaluates both the entries and adds them together automatically. |
See also:
Requirements
|
Development environment |
Target platform |
PLC libraries to be linked |
|---|---|---|
|
TwinCAT v3.1.0 |
PC or CX (x86 or x64) |
Tc2_NCI |