Omron CJ2M-CPU Series User Manual

7 High-speed Counters
7-26
CJ2M CPU Unit Pulse I/O Module User’s Manual
Precautions for Correct UsePrecautions for Correct Use
• When the count direction (incrementing/decrementing) changes at a PV that matches a target
value, the next target value will not be matched in that direction.
Set the target values so that they do not occur at the peak or trough of count value changes.
• The comparison conditions (target value and count directions) cannot be set more than once
in the same table. An instruction error will occur if the same comparison conditions appear
twice.
• An instruction error will occur if “when decrementing” is set as the comparison condition when
the high-speed counter is set to Increment Pulse Input Mode.
• The maximum response frequencies of the high-speed counters are given in the following
table.
Pulse I/O Module
No.
Item
Maximum response
frequency
0 (on the right)
High-speed
counter 0 or 1
Increment pulse 100 kHz
Up and down pulses
Pulse + Direction Mode
Differential phase (×4) 50 kHz
1 (on the left)
High-speed
counter 2 or 3
Increment pulse 100 kHz
Up and down pulses
Pulse + direction
Differential phase (×4) 50 kHz
Match
Match
Do not match.
Match/Target value + 1
Target value + 2 or higher
Target value 1
Target value 1
Target value 2
Target value 2
Bad
OK

Omron CJ2M-CPU Series Specifications

General

Power Supply	24 VDC
Number of Instructions	Over 400 instructions
Model	CJ2M-CPU11, CJ2M-CPU12, CJ2M-CPU13, CJ2M-CPU14, CJ2M-CPU15
Program Capacity	5K steps to 60K steps
I/O Capacity	Up to 2, 560 points
Communication Ports	Ethernet, USB, RS-232C
Execution Time	0.04 µs per basic instruction
Operating Temperature	0 to 55°C
Position Control	Supported
High-speed Counter	100 kHz max.
Pulse Output	100 kHz max.
Maximum Units	40 units
Storage Temperature	-20 to 75°C
Interrupt Inputs	Supported