B&B Electronics MESR424T_D-MT_D-SC - Manual - Manual (Page 9)

2. Hardware
9
LED Indicators
MESR424 Modbus Gateways have three types of LED indicators: Ethernet Link LEDs,
a Ready LED and Serial Port LEDs.
Figure 3. Port LEDs
E1/E2 Ethernet Link LED
The Ethernet Link LED (E1 or E2) illuminates (green) if the Ethernet is connected.
When the LED is blinking it indicates that there is data traffic on the Ethernet link.
The Ethernet Speed (E1 or E2) LED is OFF if the connection is 10BaseT and ON if the
Ethernet connections is 100BaseT.
E1 is used for all models to connect to the network. E2 is a pass-through Ethernet
connector.
Ready LED
The Ready LED (green) blinks if the system is operating correctly, once per second in
normal operating conditions, or three times per second in reset, configuration mode, or
when loading factory defaults. If the LED is off or steady, it indicates the system is not
operating correctly.