Omron CJ2 User Manual

3-23
3 Nomenclature and Functions
CJ2 CPU Unit Hardware User’s Manual
3-4 CJ-series Basic I/O Units
3
3-4-1 Basic I/O Units with Terminal Blocks
3-4 CJ-series Basic I/O Units
z Eight/sixteen-point Units (18-point Terminal Blocks)
Note The CJ1W-OD202, CJ1W-OD204, and CJ1W-OD212 also have an ERR indicator for the load short-circuit
alarm.
z Functions
Interrupt Input Units are used to execute interrupt programs on the rising or falling edge of an input
signal. When the specified interrupt input turns ON (or OFF), execution of the cyclic program in the
CPU Unit is interrupted and an I/O interrupt task (task number 100 to 131) is executed. When execu-
tion of the I/O interrupt task has been completed, the cyclic program is again executed starting from
the instruction after which it was interrupted.
3-4-1 Basic I/O Units with Terminal Blocks
Part Names and Functions
Interrupt Input Units
ERR
0 1 2 3 4 5 6 7
8 9 10 11 12 13 14 15
Connector
Connect to the connector on the next Unit.
I/O indicators
Model number label
Terminal block for
I/O wiring, 18P × 1
Interrupt Input Unit
CPU Unit
Input
(rising or
falling
edge)
Immediate
interrupt
1 cyclic task
I/O interrupt task
I/O interrupt task is
executed when the input
turns ON (or OFF).
MSKS

Omron CJ2 Specifications

General

Model	CJ2
Manufacturer	Omron
Type	Programmable Logic Controller (PLC)
CPU Units	Multiple models available (e.g., CJ2M, CJ2H)
Number of I/O Points	Up to 2, 560 points
Communication Ports	Ethernet/IP, EtherCAT, USB, Serial
Expansion	Yes, via I/O Units and Special I/O Units
I/O Control Method	Cyclic Scan, Interrupt
Programming Language	Ladder diagram, structured text, function block diagram, sequential function chart, instruction list
Built-in I/O	Available on some models (e.g., CJ2M)
Ethernet Port	Yes, 1 port (depending on CPU Unit)
Serial Ports	RS-232C, RS-422/485 (configurable)
USB Port	Yes (for programming and monitoring)
Operating Temperature	0°C to 55°C
Storage Temperature	-25 to 70°C
Humidity	10 to 95% RH (non-condensing)
Vibration Resistance	10 to 57 Hz, Amplitude: 0.075 mm, 57 to 150 Hz, Acceleration: 1 G, X, Y, and Z directions, 80 min each
Power Supply Voltage	24 VDC or 100 to 240 VAC (depending on CPU Unit)