High-Speed Counter Specifications - Omron CP1H CPU Operation Manual

High-speed Counters
Pulse Input Functions
Purpose
Receive incremental rotary
encoder inputs to calculate
length or position.
Measure a workpiece's length
or position.
(Start counting when a certain
condition is established or
pause counting when a certain
condition is established.)
Measure a workpiece's speed
from its position data (frequency
measurement.)
5-2-2

High-speed Counter Specifications

Specifications
Item
Number of high-speed counters
Pulse input modes (Selected in the PLC
Setup)
Input terminal allocation
Input method
Response X/XA Counters
frequency CPU 0 to 3
Unit
Y CPU Counters
Unit 0 and 1
Counters
2 and 3
Counting mode
• 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).
Function used
High-speed counter Built-in input terminals can be used for high-speed counter
function 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.
High-speed Counter The high-speed counter can be started or stopped (PV held)
Gate Bit from the Unit's program by turning ON/OFF the High-speed
Counter Gate Bit when the desired condition is met.
PRV(881) HIGH- The PRV(881) instruction can be used to measure the pulse fre-
SPEED COUNTER quency.
PV READ
• 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 PRV2(883) reads the pulse frequency and converts it to a rota-
FREQUENCY CON- tional speed (r/min) or it converts the counter PV to a total num-
VERT ber of rotations. Results are calculated by the number of pulses/
rotation.
4 (High-speed counters 0 to 3)
Differential phase
inputs
Phase-A input
Phase-B input
Phase-Z input
Differential phase,
4x
(Fixed)
24 VDC 50 kHz
inputs
Line 500 kHz
driver
inputs
24 VDC 50 kHz
inputs
Linear mode or circular (ring) mode (Select in the PLC Setup.)
Description
Specification
Up/down inputs Pulse + direction
inputs
Increment pulse Pulse input
input
Decrement pulse Direction input
input
Reset input Reset input
Two single-phase Single-phase
inputs pulse + direction
inputs
100 kHz 100 kHz
1 MHz 1 MHz
100 kHz 100 kHz
Section 5-2
Increment inputs
Increment pulse
input
---
Reset input
Single-phase
input
100 kHz
1 MHz
100 kHz
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