Omron C200HW-CLK21 Operation Manual page 68

Component Names and Functions
Wired Unit Indicators
Name Color
RUN Green
(operating)
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)
TER Yellow
(terminating resis-
tance)
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 9-1 Troubleshooting Using Indicators .
Status
Lit Unit operating normally.
Not lit Unit error.
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 net-
work.
Not lit Unit is not participating (inserted) in the
network.
Lit Data transmission.
Not lit No data transmission.
Lit Data reception.
Not lit No data reception.
Lit Manual
(see note)
Not lit Automatic
Lit Data links participating.
Flashing Error in data link table.
Not lit Not in a data link or data link inactive.
Lit Terminating resistance switch ON.
Not lit Terminating resistance switch OFF.
Section 3-1
Meaning
Note:
M/A is always not lit
when data links are not
active in the network.
45