Omron CP1H CPU User Manual

209
High-speed Counters Section 5-2
• The counting mode can be set to linear mode or circular (ring) mode.
• The counter reset method can be set to Z phase signal + software reset,
software reset, Z phase signal + software reset (continue comparing), or
software reset (continue comparing).
Pulse Input Functions
5-2-2 High-speed Counter Specifications
Specifications
Purpose Function used Description
Receive incremental rotary
encoder inputs to calculate
length or position.
High-speed counter
function
Built-in input terminals can be used for high-speed counter
inputs.
The PV for the high-speed counters are stored in the Auxiliary
Area.
The counters can be operated in ring mode or linear mode.
Measure a workpiece's length
or position.
(Start counting when a certain
condition is established or
pause counting when a certain
condition is established.)
High-speed Counter
Gate Bit
The high-speed counter can be started or stopped (PV held)
from the Unit's program by turning ON/OFF the High-speed
Counter Gate Bit when the desired condition is met.
Measure a workpiece's speed
from its position data (frequency
measurement.)
PRV(881) HIGH-
SPEED COUNTER
PV READ
The PRV(881) instruction can be used to measure the pulse fre-
quency.
• Range with differential phase inputs: 0 to 50 kHz (Y models: 0
to 500 kHz)
• Range with all other input modes: 0 to 100 kHz (Y models: 0 to
1 MHz)
PRV2(883) PULSE
FREQUENCY CON-
VERT
PRV2(883) reads the pulse frequency and converts it to a rota-
tional speed (r/min) or it converts the counter PV to a total num-
ber of rotations. Results are calculated by the number of pulses/
rotation.
Item Specification
Number of high-speed counters 4 (High-speed counters 0 to 3)
Pulse input modes (Selected in the PLC
Setup)
Differential phase
inputs
Up/down inputs Pulse + direction
inputs
Increment inputs
Input terminal allocation Phase-A input Increment pulse
input
Pulse input Increment pulse
input
Phase-B input Decrement pulse
input
Direction input ---
Phase-Z input Reset input Reset input Reset input
Input method Differential phase,
4x
(Fixed)
Two single-phase
inputs
Single-phase
pulse + direction
inputs
Single-phase
input
Response
frequency
X/XA
CPU
Unit
Counters
0 to 3
24 VDC
inputs
50 kHz 100 kHz 100 kHz 100 kHz
Y CPU
Unit
Counters
0 and 1
Line
driver
inputs
500 kHz 1 MHz 1 MHz 1 MHz
Counters
2 and 3
24 VDC
inputs
50 kHz 100 kHz 100 kHz 100 kHz
Counting mode Linear mode or circular (ring) mode (Select in the PLC Setup.)

Omron CP1H CPU Specifications

General

Brand	Omron
Model	CP1H CPU
Category	Computer Hardware
Language	English