Valve Diagram

Hydraulic axes have a non-linear characteristic curve. Valve characteristic curves are used to linearize the controlled system, which are constructed in a similar way to cam plates. For numerical control, for example, a hydraulic axis can be treated similarly to a servo axis.

Valve Diagram: Table Id

Each valve characteristic table has its own ID. This is assigned to each table consecutively. The table ID uniquely identifies the cam plate in the TwinCAT system.

Valve Diagram: Interpolation type

Two types of interpolation

• ‘LINEAR’ or
• ‘SPLINE’

can be selected to connect the discrete number pairs (x, y) in the valve characteristic table.

Valve Diagram: Output offset [-1.0 … 1.0]

This parameter allows you to adjust the zero crossing of the valve characteristic curve through the origin.