This type of encoder directly delivers the numerical value of the axis position. The position measurement is maintained in the event of a power outage.

The set of external elements that control the machine's movements (speed reducer, encoder, etc.).

The motor/drive/mechanics that command the moving part to move in a given direction (axis, linear movement) or around a set rotation axis (rotoid axis, circular movement).

In a flying shear application, a sensor detects the course of the product to be cut. When the event is received, a module memorizes the belt position and calculates the cutting point according to the following formula :

Control Source Point = memorized point + cutting distance on event.

Micro-programmed system, which determines the movement operating direction.

Movement stop with maximum deceleration.

Modules triggered by software or hardware (application specific module).

Events take priority in Mast or Fast tasks, and are executed upon detection.

The EVT0 event has the highest priority, the others share the same level of priority.

Co-efficient allowing adjustment of the action and feed forward of the position control loop (compromise between following/overshoot error at the stop point).

Application consisting of :

- a ‘conveyor belt’ axis, which transports a product.

- a ‘tool carrier’ cart axis, which carries out return travel beetween an idle point and a working point, and which synchronizes position and speed with the belt.

Deviation between the position setpoint and the measurement during movement.

Write parameters procedure for measuring current position at a predefined value. This operation references the axis.

binary code known as reflected, in which the transition from term n to term n+1 is performed by modifying one single digit. Code reading is therefore made with no ambiguity.

pulse generator with 2 signals offset to 90º. These are produced according to the axis movement and are counted by the module.

Movement law is applied to each axis independently. Axes depart simultaneously, movement speed is a setpoint speed, movement time depends on the distance to be covered, the "axes" do not arrive at the same time; movement through space is ordinary. The aim is to arrive at the arrival address as quickly as possible without constraining the trajectory.

The moving part moves continually between the value 0 and the modulo limit (for example a conveyor belt).

Allows 2 or 3 axes to be linked, so that movements can be made two or three dimensionally.

International Standard Organization. The ISO code is the most used code. The transmission rules, formats and symbols are ISO standards. AFNOR is a member of ISO.

The moving part moves between two upper and lower limits in two directions.

Dimensioning reference for the machine axis.

Mechanical shoulder fixed to an axis, which activates a sensor indicating the end of the moving part's journey.

Domain of evolution for measuring an infinite axis.

This is the variation law applying to the acceleration, speed and position setpoints. It is often illustrated by the curve: speed = F(time).

In an increasingly complex order, the following can be found: rectangular, triangular, trapezoidal, parabolic and squared sine laws.

Index value for the indexed position calculation, absolute position = index (REFP) + indexed position.

Write parameters procedure for measuring current position by moving the moving part and detecting external events (reference point input and/or cam input). This operation references the axis without moving.

Module status when a reference point is taken. Position measurements are only meaningful and movements are only authorized in this status.

this is the smallest type of input information which provides information that can be measured from the output information.

Pulse supplied by a rotary incremental encoder, detected at each complete turn of the axis.

Automation function which consists of producing a physical dimension conforming to a fixed or variable reference (position control, speed control, etc.)

Upper limit for the position measurement, which must not be exceeded by the moving part (set by the SLMAX adjustment parameter).

Lower limit for the position measurement, which must not be exceeded by the moving part (set by the SLMIN adjustment parameter).

(CMV) Multiplication co-efficient of a value between 0 and 2 for all speeds, in increments of 1/1000.

Theoretical speed of the moving part calculated by the module following the maximum acceleration law and the programmed speed.

Position control tolerance around the stop point.

Following elementary movements between a departure address and an arrival address, passing through intermediary addresses. Movement between two addresses is performed using a specific movement's speed or time.

Total measurement points between 2 software limits.