Omron CJ2 User Manual

6 Troubleshooting
6-24
CJ2 CPU Unit Hardware User’s Manual
z Normal Operation
z Errors Related to CPU Unit Data Exchange
z Errors Related to the CPU Unit
z Errors Related to the Control Bits
6-2-2 Checking Error Status at the EtherNet/IP Port Seven-segment
Display
The seven-segment display alternately displays the built-in EtherNet/IP port node address and the
following error codes.
Indications
Error
MS NS 7-segment
Lit green Lit or flashing
green
Built-in Ether-
Net/IP port node
address
Normal
Indications
Error
MS NS 7-segment
Flashing red Not lit H1 Duplicate unit number
Flashing red Not lit H2 CPU Unit faulty
Lit red Not lit H3 Built-in EtherNet/IP port faulty
Flashing red Not lit H4 Node address setting error
Flashing red Not lit H6 CPU Unit faulty
Flashing red Not lit H7 I/O table not registered
Flashing red --- H8 Simple backup function restore error
Flashing red --- H9 I/O bus error
Flashing red --- HA CPU Unit memory error
Flashing red Not lit Hb CPU Unit event servicing timeout
Flashing red --- HC Routing table error
Flashing red --- Hd I/O refresh error
Flashing red --- HE CPU Unit service monitoring error
Flashing red --- HF CPU Unit watchdog timer error
Indications
Error
MS NS 7-segment
Flashing red --- HH CPU Unit Fatal Error
--- --- --- Output OFF Error
Indications
Error
MS NS 7-segment
--- --- C6 Multiple Switches ON
Built-in EtherNet/IP port
seven-segment display

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)