Functions; System Configuration - Omron CQM1H - PROGRAM Programming Manual

Absolute Encoder Interface Board
2-3-2

Functions

Absolute High-speed
Counter with Interrupt
Function
2-3-3

System Configuration

122
The Absolute Encoder Interface Board is an Inner Board that counts two gray
binary code inputs from an absolute (ABS) rotary encoder.
The Absolute Encoder Interface Board reads binary gray codes (inverted
binary codes) input from an absolute encoder through ports 1 and 2 at a max-
imum counting rate of 4 kHz, and performs processing according to the input
values.
Operating Modes
BCD Mode and 360 ° Mode.
Resolutions
One of the following can be set: 8 bits (0 to 255), 10 bits (0 to 1023), or 12 bits
(0 to 4095). The resolution should be set to match that of the encoder con-
nected.
Interrupts
An interrupt subroutine can be executed when the PV (present value) of the
absolute high-speed counter matches a specified target value or lies within a
specified comparison range.
Note The use of an absolute encoder means that the position data can be retained
even during power interrupts, removing the need to perform an origin return
when power is returned. In addition, the origin compensation function allows
the user to specify any position as the origin.
Absolute Encoder Interface Board
Absolute Encoder
E69-DC5 connector cable
Detects angle of rotation and controls processing table.
Workpieces
Processing tab le
Motor driver
(Inverter)
Motor
Section 2-3