MC_WriteParameter
This function block writes a numeric (LREAL) parameter value to the axis.
The command is typically processed synchronously.
Syntax
Definition:
FUNCTION_BLOCK MC_WriteParameter
VAR_INPUT
Axis : Type_PtpReadWriteParameter;
Execute : BOOL;
ParameterId : EAxisParameterId;
Value : LREAL;
END_VAR
VAR_OUTPUT
Done : BOOL;
Busy : BOOL;
Error : BOOL;
ErrorId : UDINT;
END_VAR
Inputs
|
Name |
Type |
Default |
Description |
|---|---|---|---|
|
Axis |
|
Reference to the axis | |
|
Execute |
BOOL |
|
Trigger the command with rising edge. |
|
ParameterId |
Invalid |
Identifier of the parameter to write. | |
|
Value |
LREAL |
|
Value of the parameter to write. |
Outputs
|
Name |
Type |
Description |
|---|---|---|
|
Done |
BOOL |
Parameter value has been successfully written. |
|
Busy |
BOOL |
Function block is not finished. |
|
Error |
BOOL |
Error occurred within function block. |
|
ErrorId |
UDINT |
Error identifier |
Possible error codes
For this function block, the following values, among others, are possible for the ErrorId output:
Error(Hex) | Error(Dec) | Error type | Description |
|---|---|---|---|
0x8145 | 33093 | Function Block | Mapping of cyclic interface between NC and PLC is missing (e.g., AXIS_REF, AXES_GROUP_REF, ...). A reference used by the function block (e.g., to an axis, group, mover or other motion object) is not linked to the corresponding NC object, or its cyclic mapping is incomplete. |
0x8189 | 33161 | Function Block | Invalid reference passed to function block. An invalid reference (or pointer) was used in a function block call. This can happen if a reference type is used before it was initialized. |
0x81b1 | 33201 | Function Block | Invalid size passed to function block (e.g., invalid array size or invalid number of elements). An invalid size was passed to the function block (e.g., CamRef.NumberOfPoints less than two on MC_CamTableSelect). |
An overview of all NC error codes can be found here:
In conjunction with the hardware, the ADS return code ADSERR_DEVICE_BUSY (0x708; 1800) may also occur if the device is busy.
You can find an overview of all ADS return codes here:
Version information
- TwinCAT Standard >= v3.1.4026.23.1
- TF5500 MC3 Base >= v4.0.6