Omron CJ2 User Manual

6-11
6 Troubleshooting
CJ2 CPU Unit Hardware User’s Manual
6-1 CPU Unit Errors
6
6-1-7 Handling Errors
A communications error will occur if there is an error in communications between the peripheral (USB)
Port and a connected device.
z Error Causes and Remedies
A communications error will occur if there is an error in communications between the serial (RS-232C)
port and a connected device.
z Error Causes and Remedies
Communications Error (Peripheral (USB) Port)
POWER RUN
ERR/AL
M
PRPHL COMM
CX-Program-
mer display
Error flag
Error
code
Error infor-
mation
Lit. Lit. Not lit. Not lit. Not lit. ---- None None None
Suspected cause of
error
Confirmation method Remedy
Prevention of recur-
rence
The communications
cable is disconnected.
Perform a visual inspec-
tion and pull on the cables.
Reconnect the cables. During operation, confirm
that the connections are
secure. Check for vibration
or shock.
Communications Error (Serial Port (RS-232C))
POWER RUN
ERR/AL
M
PRPHL COMM
CX-Program-
mer display
Error
flag
Error
code
Error infor-
mation
Lit. Lit. Not lit. Not lit. Not lit. ---- None None None
Suspected cause of
error
Confirmation method Remedy
Prevention of recur-
rence
Communications set-
tings are incorrect.
• Check whether the DIP
switch pin 5 setting and
and the serial port settings
in the PLC Setup are cor-
rect.
• If a host computer is con-
nected, check the host
computer serial port set-
tings and the program.
• Correctly set DIP switch
pin 5 and the serial port
settings in the PLC Setup.
• Correct the host computer
serial port settings and the
program.
Same as at the left.
A communications
cable is incorrectly
connected.
• Check the cable connec-
tions.
• Correct the cable connec-
tions.
Same as at the left.
A communications
cable is disconnected.
Perform a visual inspection
and pull on the cables.
Reconnect the cables. During operation, confirm
that the connections are
secure. Check for effects
of vibration or shock.

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)