User manual
905U-G Wireless Gateway User Manual
Page 143 ©September 2004
6.4 Fieldbus Indicating LEDs
All 905G modules (except MD1) are equipped with four fieldbus indication LED's located in
the module end plate, used for diagnostics purposes. The meaning of the LED’s for each
fieldbus is described below.
6.4.1 Ethernet Indicating LED’s
Led No Color State Description
1 Green - The Link led indicates that the module is connected to an
Ethernet network.
2 Green Off No power applied to module.
2 Green Steady Device operating correctly.
2 Green Flashing Module has not been configured.
2 Red Flashing Minor recoverable fault has been detected.
2 Red Steady Major internal error has been detected.
2 Green/Red Flashing Power on self-test.
3 Green Off No power applied or no IP address has been assigned.
3 Green Steady Module has at least one Ethernet/IP connection established.
3 Green Flashing No Ethernet/IP connections to the module.
3 Red Flashing Connection timeout
3 Red Steady Duplicate IP address
3 Green/Red Flashing Power on self-test.
4 Green Flashing Flashes each time a packet is received or transmitted.