Omron CS1W-CLK12-V1 Operation Manual page 66

Component Names and Functions
Meanings of LED
Indicators
Name Color
RUN Green
(operating)
P/S Green
(power supply)
ERC (communica- Red
tions error)
ERH Red
(PLC error)
INS Yellow
(network participa-
tion)
SD Yellow
(send)
RD Yellow
(receive)
M/A Yellow
(data link mode)
LNK Yellow
(data link)
RING Yellow
(transmission path
format)
Note Even when the local node does not participate in the data link, the
indicator will be lit if there are manually set data links active on the
network.
For details refer to 10-1 Troubleshooting Using Indicators.
Status
Lit Unit operating normally.
Not lit Unit error.
Lit Backup power is being supplied.
Not lit Backup power is not being supplied.
Lit Communications error, node address setting
error (same address set twice), or hardware
error.
Not lit Normal operation
Lit PLC error, PLC interface error, EEPROM
error, unit number error, or I/O table not set
Not lit No error.
Lit Unit is participating (inserted) in the network.
Not lit Unit is not participating (inserted) in the net-
work.
Lit Data transmission.
Not lit No data transmission.
Lit Data reception.
Not lit No data reception.
Data Data links not active in the network.
links
active in
the net-
work.
Lit Manual Note:
(See M/A is always not lit when data
note.) links are not active in the network.
Not lit Auto-
matic
Lit Data links participating.
Flashing Error in data link table.
Not lit Not in a data link or data link inactive.
Lit Token-ring mode setting (cable normal)
Flashing Token-ring mode setting (cable disconnected)
Not lit Token-bus mode setting
Section 3-1
Meaning
49