MDE-4318D Competitive Pump and CRIND (CPC) Hardware/Software Start-up and Service Manual · May 2010 Page 59
CPC D-Box
Troubleshooting Steps
Troubleshooting Dispenser Hub LEDs
Port
Solid Green LED
Blinking Green LED
Solid Amber
LED
Blinking Amber LED
LAN
A solid green LED
on the LAN port
indicates a link
between the
Dispenser Hub and
another TCP/IP
device (for
example, Router).
Refer to Note
NA
A blinking amber LED on the LAN
port indicates data is being
transmitted and received by the
Dispenser Hub through TCP/IP
(current production Dispenser
Hubs - refer to Note
Pump (refer
to Notes
A solid green LED
on a PUMP loop
indicates an open
loop between
Dispenser Hub and
the D-Box.
A blinking green LED
on the LAN port
indicates that data
from at least one
pump/CRIND on this
specific loop is being
received by the
Dispenser Hub.
NA
A blinking amber LED on a PUMP
loop port indicates that this loop is
active and the Dispenser Hub is
attempting to transmit data through
this port.
Probe
NA
A blinking green LED
on the PROBE port
indicates that data is
being received
through the PROBE
port.
NA
A blinking amber LED indicates
data transmission through the
PROBE port. Refer to Note
Notes:1) To date, two main boards have been shipped in the Dispenser Hub. In T20039-G1,
the green LED was used as a transmit LED and the amber as a receive LED. In
T20039-G2, the green LED is used as a link indicator, and the amber is used for both
transmit and receive.
2) The Probe port is only used when programming or diagnostics is being performed on
the Dispenser Hub. There is no cable connection to the Probe port during typical
operation. The amber LED (Transmit) flashes briefly during Dispenser Hub
power-up. However, there is no LED activity on this port during normal operation.
3) When both green and amber LEDs are blinking, it does not indicate communication
between the POS system and the dispensers, but between the dispensers to the
Dispenser Hub itself. The Dispenser Hub is the conversion point of TCP/IP to
wire-wire and vice versa.
4) When both green and amber LEDs are off (and the Dispenser Hub has AC power), it
indicates that there is a complete loop between the Dispenser Hub and the D-Box, but
the Dispenser Hub is not attempting to transmit any data over this loop.