Omron CJ2 User Manual

6 Troubleshooting
6-6
CJ2 CPU Unit Hardware User’s Manual
The type of error that has occurred can be identified by checking the indicators on the front of the CPU
Unit and the Power Supply Unit, or by using the CX-Programmer to check the error status. The errors
detected by the CPU Unit are listed in the following table.
For details on errors that are not detected by the CPU Unit, refer to 6-3 Non-CPU Unit Errors and Rem-
edies.
*1 The indicator status is the same for CPU errors and fatal errors, but they can be distinguished because a Programming
Device can be connected when a fatal error occurs, but not when a CPU error occurs.
*2 For details on fatal errors and non-fatal errors, refer to A-3 Fatal and Non-fatal Error Details.
Note The indicator status shows the status of the errors that have occurred in RUN or MONITOR mode.
6-1-6 Types of Errors
Error name POWER RUN ERR/ALM INH PRPHL COMM
Error code
(stored in
A400)
Operation status
Power supply error OFF OFF OFF OFF OFF OFF --- Operation stops.
CPU Standby ON OFF OFF --- --- --- --- Operation stops.
CPU reset --- Operation stops.
CPU error (WDT error)
*1
ON OFF ON --- --- --- --- Operation stops.
USB port communications error ON ON OFF --- OFF --- --- Operation continues.
RS-232C port communications
error
ON ON OFF --- --- OFF --- Operation continues.
Fatal errors
*1*2
Cycle time too long ON OFF ON --- --- --- 0x809F Operation stops.
I/O bus error 0x80C0 to
0x80C7,
0x80CE,
0x80CF
I/O setting error 0x80E0
Too many I/O points 0x80E1
Duplicated number error 0x80E9,
0x80EA
Program error 0x80F0
Memory error 0x80F1
Version error 0x80F2
Memory Card error 0x80F4
FALS (007) error 0xC101 to
0xC2FF
Non-fatal errors
*2
Duplicate refreshing error ON ON Flashing --- --- --- 0x008B Operation continues.
Basic I/O error 0x009A
PLC Setup setting error 0x009B
Backup memory error 0x00F1
Tag memory error 0x00F2
Other non-fatal errors
(e.g., system work errors)
0x00F3
Battery error 0x00F7
CPU Bus Unit error 0x0200 to
0x020F
Special I/O Unit error 0x0300 to
0x035F,
0x03FF
CPU Bus Unit setting error 0x0400 to
0x040F
FAL (006) error 0x4101 to
0x42FF
Special I/O Unit setting
error
0x0500 to
0x055F

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)