LED Indicators
Original instructions
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Display
These LEDs are on the front of the 140NOC78•00 module:
NOTE: The Net Status 1 and Net Status 2 LEDs are not functional for the 140NOC78000 distributed I/O head module.
Indications
LED conditions:
Description
Active
Ready
Mod Status
Net Status
Net Status 1
Net Status 2
green
green
green
red
green
red
green
red
green
red
general
component not operating
—
off
off
on
off
off
off
off
off
off
invalid configuration
—
off
off
flash
off
off
off
off
off
off
not configured
—
off
flash
off
off
off
off
off
off
off
configured
—
blink
on
off
on/flash
off
on/flash
off
on/flash
off
no/default module MAC
—
blink 2
off
flash
off
off
off
off
off
off
no/default port MAC
—
blink 2
off
flash
off
off
off
off
off
off
no link
—
blink 3
—
—
—
—
—
—
—
—
power-up sequence
blink (.25 sec on; .25 sec off)
5
6
1
2
3
4
5
6
7
8
IP address
duplicate IP
—
blink 4
on
off
off
on
off
on
off
on
waiting for IP
—
blink 5
on
off
off
off
off
off
off
off
default IP address assigned
—
blink 6
on
off
off
off
off
off
off
off
configured IP address assigned
—
on
on
off
flash
off
flash
off
flash
off
invalid configuration
—
blink 7
on
off
off
off
off
off
off
off
I/O data commun-ication
no I/O or CIP connections
—
on
on
off
flash
off
flash
off
flash
off
at least one I/O data connection to a remote I/O drop
—
on
on
off
on
off
on
off
on
off
at least one CIP connection
—
on
on
off
off
flash
off
flash
off
flash
NOTE: The 140NOC78100 control head module has the unique functionality of providing multiple Ethernet network interfaces. The Ready LED indicates the status on any of the configured Ethernet network interfaces. For example, when the interlink cable is disconnected, the Ready LED flashes 5 times, even though the 140NOC78100 module is still connected to the control network.
Ethernet Port Indications
These LEDs report the status of the Ethernet port:
Name
Color
Status
Description
LINK (valid for ETH 1 and ETH 2 only)
green
on
100 Mbps link detected
yellow
on
10 Mbps link detected
—
off
no detected link
ACT
green
blinking
active Ethernet link (transmit or receive)
green
off
inactive Ethernet link