Omron CJ2 User Manual

Appendices
A-118
CJ2 CPU Unit Hardware User’s Manual
z Restrictions
If a short-circuit occurs in an external load, immediately turn OFF the corresponding output and
remove the cause. An alarm output bit that corresponds to the external load output number is turned
ON. There is an alarm output bit for every common.
When an alarm output bit turns ON, use a self-holding bit for the alarm in the user program and turn
OFF the corresponding output.
The alarm output bit is allocated in the Basic I/O Unit Information Area (A050 to A069) for every Unit
mounting slot.
The following table shows the correspondence between output bits and bits in the Basic I/O Unit
Information Area.
For example, when the CJ1W-OD212 is mounted in slot 0 on Rack 0, A50.00 will turn ON if the out-
put 8 is short-circuited. When the CJ1W-OD232 is mounted in slot 1 of Rack 0, A50.09 will turn ON
if the output m+1 is short-circuited.
z Programming Example
In this example, CJ1W-OD212 is mounted in slot 0 of the Rack 0.
This example shows how to turn OFF output bits CIO 0.00 to CIO 0.07 immediately if the alarm out-
put bit A50.00 turns ON and how to keep the output bits OFF until the cause is removed and the bit
is reset using work bit W0.01.
Output bit
m m+1 m+2 m+3
0 to 7 8 to 15 0 to 15 0 to 15 0 to 15
CJ1W-OD204 Mounted in even slot 0
Mounted in odd slot 8
CJ1W-OD212 Mounted in even slot 0
Mounted in odd slot 8
CJ1W-MD232 Mounted in even slot 0
Mounted in odd slot 8
CJ1W-OD232 Mounted in even slot 0 1
Mounted in odd slot 8 9
A
0.00
W0.00
B
0.01
W0.00
H
0.07
W0.00
A50.00
W0.00
W0.01
W0.00

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)