Omron CQM1H - 08-2005 User Manual

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Absolute Encoder Interface Board Section 8-3
Output Specifications
8-3 Absolute Encoder Interface Board
8-3-1 Model
8-3-2 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.
Item Specifications
No. of pulse outputs 2 outputs (Ports 1 and 2 = Pulse outputs 1 and 2)
Signal names CW and CCW pulse output
Max. output frequency 50 kHz (20 kHz with stepping motor connected.)
External power supply 5 V DC±5% 30 mA min.
24 V DC
+10%
/
–15%
30 mA min.
Max. switching capacity NPN open collector, 30 mA/5 to 24 V DC±10%
Min. switching capacity NPN open collector, 7 mA/5 to 24 V DC±10%
Leakage current 0.1 mA max.
Residual voltage 0.4 V max.
Pulse output specifications
Pulse
frequency
Switching current/Load power supply voltage
7 to 30 mA/5 V DC±10%
7 to 30 mA/24 V DC
+10%
/
–15%
tON tOFF tON tOFF
10 kpps max. 49.5 µs min. 48.5 µs min. 49.6 µs min. 46.0 µs min.
30 kpps max. 19.5 µs min. 18.5 µs min. 19.6 µs min. 16.0 µs min.
50 kpps max. 9.5 µs min. 8.5 µs min. 9.6 µs min. 6.0 µs min.
Min. pulse width
Name Model Specifications
Absolute Encoder
Interface Board
CQM1H-ABB21 2 inputs for absolute encoders

Omron CQM1H - 08-2005 Specifications

General

Category	Programmable Logic Controller (PLC)
Manufacturer	Omron
Program Capacity	3.2K steps
Model	CQM1H
I/O Points	512 points max