Seven-Segment Display; Status Indicators: Ms, Ns, Comm, 100M, And 10M - Omron CJ2 CPU UNIT User Manual

Status Indicators: MS, NS, COMM, 100M, and 10M

The MS (Module Status) indicator indicates the status of the built-in EtherNet/IP port itself and the
NS (Network Status) indicator indicates the status of the network.
The COMM, 100M, and 10M indicators indicate the status of Ethernet communications.
The MS and NS indicators can be green or red. The COMM, 100M, and 10M indicators are yellow.
These indicators can be lit, flashing, or not lit. The following table shows the meaning of these indi-
cator conditions.
Refer to SECTION 6 Troubleshooting for details on using these indicators for troubleshooting.
Indicator
MS Module Status
NS Network Status
COMM Communication
100M 100 Mbps
10M 10 Mbps

Seven-segment Display

When the power supply to the PLC is turned ON or the CPU Unit is reset, all of the segments will
flash twice, and then the IP address set for the built-in EtherNet/IP port will be displayed on the 7-
segment display from right to left. After the entire IP address is displayed, the lower 8 bits of the IP
address (node address) will be displayed in hexadecimal.
CJ2 CPU Unit Hardware User's Manual
Name Color Status
Red Lit
Flashing Recoverable error
Green Lit
--- Not lit
Red Lit
Flashing Recoverable error
Green Lit
Flashing Tag data link and message connections not established
--- Not lit
Yellow Lit
Not lit
Yellow Lit
Not lit
Yellow Lit
Not lit
3 Nomenclature and Functions
Meaning
Fatal error
Normal
Power supply OFF
Fatal error
Tag data link and message connections established
Offline or power supply OFF
Transferring data
Not transferring data
100Base-TX link established
100Base-TX link not established
10Base-TX link established
10Base-TX link not established
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