Block

Mask

This block implements the standard way to package 2 Quad Decoder application blocks into the standardized I/O interface.

This block has no parameters.

QEIn	This port is the input to the Quad Decoder. It is a concatenation of A, B and Z signals.
NPPR1	This port is the number of A/B pulses per turn (i.e. between two consecutive Z pulses if the rotation direction does not change).
AleadsB1	This port is used to specify the encoding pattern (according to the encoder specification, the A pulse may come before or after the B pulse, for a positive speed).

Angle[X] where X=[1,2]	These ports are the angle modulating the quadrature-encoded rotating device. The angle value is provided as a turn ratio, in the range [0,1[ and in the UFix16_16 format.
Timestamp[X] where X=[1,2]	These ports are the timestamp of the last update of the angle, detected as an event on A, B or Z. It is expressed as an integer number of clock ticks. These ports can be used along with the angle outputs to compute precisely the speed of an encoder.
DataReady[X] where X=[1,2]	These ports indicates the validity of other ports' values. It is active high and activated only if the angle has been updated since the last synchronization pulse (ModelSync).
EventCount[X] where X=[1,2]	These ports give the number of increments or decrements of the angle since the last synchronization pulse (ModelSync), in the signed integer format Fix21_0.

This block has no special characteristics or limitations.