Hardware description
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LED GREEN RED Meaning Remedy
RUN
OFF OFF No power supply of the CPU. – Check the system power supply at the gateway.
ON OFF PLC program running
blinking OFF Firmware updated running see Firmware update
OFF ON PLC program stopped
OFF blinking No PLC program loaded
OFF blinking,
1 Hz
F_Reset is in progress see page 23
LED GREEN RED Meaning Remedy
BUS
OFF OFF No power supply of the CPU. – Check the system power supply at the gateway.
ON OFF Displays the logical connection to
a master
If more than one slave is config-
ured at the PG, then the LED shows
the state of the slave in CODESYS
which was the first to be config-
ured.
blinking OFF Device ready for operation
OFF ON Gateway error:
– IP address conflict
– gateway in RESTORE-mode
– F_Reset activated
– Check the IP-addresses in the network
– Check the DIP switch position.
blinking, alternating
– Auto-negotiation
and/or
– Autonegotiation and / or waiting
for DHCP- / BootP-address assign-
ment.
– The gateway waits for IP-address assignment.
Wait for the address assignment to be finished.
LED GREEN YELLOW Meaning Remedy
LNKx
OFF OFF no link – Check the Ethernet connection.
OFF ON Link established,10 Mbps
off blinking Ethernet Traffic, 10 Mbps
ON OFF Link established,100 Mbps
blinking OFF Ethernet Traffic, 100 Mbps
LED GREEN RED Meaning Remedy
ERR
OFF OFF Station running, no diagnostics
OFF ON A diagnostic message from gate-
way or I/O-modules is pending.
– Check the diagnostic messages.
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