122
Absolute Encoder Interface Board
Section 2-3
2-3-2
Functions
The Absolute Encoder Interface Board is an Inner Board that counts two gray
binary code inputs from an absolute (ABS) rotary encoder.
Absolute High-speed
Counter with Interrupt
Function
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.
2-3-3
System Configuration
Absolute Encoder Interface Board
Workpieces
Motor driver
(Inverter)
le
Absolute Encoder
Motor
E69-DC5 connector cable
Detects angle of rotation and controls processing table.
Processing tab
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