Use for continuous motion

Use

The position reading has a fixed dynamic of 32768. Programming the is done in this group of pulses.

Example: a 16 m belt with an resolution of 0.5 mm.

Counter must be configured on the rising edge on Irec. The recalibration value can be adjusted with a value other than 0.

The length of the part can be measured using the functions.

The application of events can be used, for example, to:

set the processor cam to Run after recalibration (movement of parts).
set the cam processor to Stop on recalibration if processing of a part has not finished.

Anticipation

For high-speed machines, it is possible to correct the following very precisely: the actuator ascent time and the internal module processing time, if required.

A fine resolution and a large number of , ensure precise . For example: if the user wishes to anticipate the command of an actuator by 1ms, the encoder must be able to provide more than 5 pulses in that time.

Cam

Logic state which switches to 1 when an angular value in the cycle is overshot and which resets to 0 according to the type of cam.

A cam is systematically associated to one and only one track. Several cams can be associated to one track.

Recalibration

This is the module function which is used to adjust the axis in relation to the machine zero or to synchronize the axis in relation to the arrival of a part.

Recalibration forces the position reading to a value which is predefined by the "recalibration value" parameter (included in the pulse field of the cycle).

The module allows recalibration to be carried out systematically for each cycle or for only one cycle. This recalibration is always conditioned to the IREC input.

Capture

A module function that is used to sample the position value of the axis on detection of a precise event (input Icapt0 and/or Icapt1). The capture has no impact on the values of the axis nor on the cam processor.

The implementation of this function allows the application to manage the process better, for example: in monitoring the number of pulses sent by the encoder, the size of the parts, the axis slip, the angle of arrival of the parts.

Pulses per cycle

This is the number of pulses delivered by the axis per cycle.

In relation to the encoder resolution, this adjustment parameter must be considered:

after multiplying by 4 for an incremental encoder
after reducing the resolution for an absolute encoder.

Anticipation

Cam processor function that is used to compensate for the delay caused by the machine’s actuators.

The anticipation value is applied to all changes of track status. It is specified by the "anticipation factor" defined in the recipe parameters (value between 0 and 32 767 x 50 micro seconds).