Specifications

9 ComputerBoards
9-92
CIO-QUAD04
The CIO-QUAD04 is a 24-bit counting board with 4 channels. This board
typically connects to incremental encoders. Incremental encoders convert
physical motion into electrical pulses than can be used to determine velocity,
direction, and distance.
xPC Target supports this board with one driver block:
•“CIO-QUAD04 Incremental Encoder”
Board Characteristics
CIO-QUAD04 Incremental Encoder
This driver block has three block outputs: Angle, Turns, and Init.
You can use
Init to determine when the block output values are valid. Init is
first set to
0. When the encoder reached the first index, Init is set to 1. From
then on, you can determine the exact position, direction, and velocity.
Init
remains
1 unless Counter Reset by Index is set to First Only, and the counter
detects a rollover. For more information, see “Driver Block Parameters” on
page 9-90.
Turns is the number of complete revolutions made by the encoder. Angle is the
amount the encoder turns since the last full revolution.
The distance is given by:
distance = 2 * pi * Turns + Angle
Board name CIO-QUAD04
Manufacturer ComputerBoards
Bus type ISA
Access method I/O mapped
Multiple block instance support Yes
Multiple board support Yes