#815-1200 W73rd Ave, Vancouver, BC, V6P6G5, Canada Phone: 888-387-3787 or 604-266-8547 www.equustek.com
10
4.2.2 Normal On-line Operation
The following is a description of the normal operation of the LED’s on the DL4500.
LEFT LED’s
Description of Operation
Power
Green Indicates Power is being supplied to the DL4500.
Ethernet
Flashes GREEN for 0.5 seconds when a character is Received or
Transmitted. If Characters are being received of transmitted faster
than this then it might appear the LED is on SOLID. Flashes RED
for 0.5 seconds if a NAK is received or transmitted. Will also
flash if all serial communication buffers are full.
A-B Network
(DH+
)
On Hardware Reset will flash GREEN and RED until a valid DH+
network is
detected. This is the AUTO BAUD Rate detection
mode, the DL4500 will automatically connect at the DH+ speeds
of 57.6K, 115.2K and 230.4K Baud.
LED will switch to on solid
once the DL4500 is on the DH+ network as a valid node address.
LED will flash GREEN when the DH+ is set to a certain Baud rate
but is not on network.
(DH-485)
On Hardware reset the A-B Network will flash GREEN at a 1
second rate when the DH-485 is not on network. Once a valid
network is running the LED will flash GREEN much more rapidly
(approx. every 0.1 seconds), the rate depends on how busy the
network is.
Status
Used for Determining Operating Mode and DL4500 Status
RIGHT LED’s
Description of Operation
TX/RX
Lights Solid green to indicate an Ethernet socket is idle. Blinks
green to indicate an Ethernet socket has been established and
active.
Diagnostic
Blinks or lights solid red in combination with TX/RX led to
indicate diagnostics and error detection.
Link
Lights Solid Green to indicate Ethernet Port is connected to the
10Base-T network.
