Ethernet LEDs Indications Actions
Waiting for Ethernet configuration
data from CPU.
PORT 1: PLC CPU is controlling Port
1.
▪ Use the PLC programmer to update the
configuration, then store the configuration to
the PLC.
▪ Power cycle the PLC.
▪ Clear faults and press the Restart
pushbutton for less than 5 seconds to restart
the Ethernet interface.
Green / flickering
Slow blink green
Waiting for IP Address
LAN: Ethernet interface is online.
Flickers during activity.
STAT: IP Address has not been
configured.
PORT 1: PLC CPU is controlling Port
1.
IP address has not been configured, or has
been configured as 0.0.0.0
▪ Use the PLC programmer to configure a
non-zero IP address.
Green / flickering
Slow blink green
Waiting for IP Address
LAN: Ethernet interface is online.
Flickers during activity.
STAT: IP Address has not been
configured.
PORT 1: Available for Station
Manager use
Waiting for IP Address
LAN: Ethernet interface is offline.
Attempting to recover if possible.
STAT: IP Address has not been
configured.
PORT 1: PLC CPU is controlling Port
1.
Waiting for IP Address
LAN: Ethernet interface is offline.
Attempting to recover if possible.
STAT: IP Address has not been
configured.
PORT 1: Available for Station
Manager use
Operational
LAN: Ethernet interface is online.
Flickers during activity.
STAT: No “exception” detected
PORT 1: PLC CPU is controlling Port
1.
If LAN is off, the problem may be:
• Network cable not connected either at the
PLC or at the hub.
• Hub disconnected/failed.
• Network cable not properly terminated.
Operational
LAN: Ethernet interface is online.
Flickers during activity.
STAT: No “exception” detected
PORT 1: Forced to Station Manager
use
If STAT is amber, an exception condition has
occurred.
Ethernet Communications GFK-1503E User Manual 263
For public disclosure
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