Limiting
This function is responsible for limiting all axis functions. The type of limitation depends on the drive technology. For example, the torque of electric axes and the pressure of hydraulic axes can be limited. The following function blocks are automatically available internally for axes of type FB_AxisNcBase:
- FB_TorqueLimitingCoE - DS402 (AX8000) based TorqueLimiting
- FB_TorqueLimitngSoE - AX5000 based TorqueLimiting
 | No core function This function does not belong to any classification of core functions. It is only mentioned in the context of core functions, as it can be achieved via the properties of an axis. |
Syntax:
FUNCTION_BLOCK FB_Limiting EXTENDS FB_MessageBase
Properties
Name | Type | Access | Description |
|---|---|---|---|
Activate | BOOL | Get, Set | Activates the use of the |
ActiveValue | LREAL | Get | Limitation value currently available |
Actual | LREAL | Get | Current actual value of the limited variable (torque/pressure) |
ConnectedToDrive | BOOL | Get | An internal connection to a drive unit has been established. |
DefaultFb | I_LimitingFb | (Get, Set) | Access to the standard function block for torque limitation if specific handling is used. |
Direction | E_AdaptableDirection | Get, Set | Direction in which the torque limit should act. |
IdleValue | LREAL | Get, Set | The idle value for the limitation to which the axis returns after a command. |
MaxValue | LREAL | Get, Set | The effective limitation of the limit for each command. |
NominalValue | LREAL | Get, Set | The normalized value in relation to the |
ReferenceValue | LREAL | Get, Set | Reference value for the maximum command value of the limit. |
ActualTorque 1 | LREAL | Get, Set | Current actual torque value of the axis. |
1Obsolete
Methods
Name | Description |
|---|---|
[ | Implements the return to the idle value when a command is terminated. |
Interfaces
Type | Description |
|---|---|
I_Limiting | Standard interface on FB_Limiting. |
I_LimitingFb | Extended interface for use as a core function. |
Requirements
Development environment | Target platform | PLC libraries to include |
|---|---|---|
TwinCAT v3.1.4024.55 | PC or CX (x64, x86) | Tc3_PlasticFunctions (>= v12.6.1.0) |