A.2 Front Panel LED Indicators
A.2.1 BB3-6101 LED Indicators
Power-up LED behavior: On power up, the Reply LED will remain on solid red for about
20 seconds, then the Request and Reply LEDs will do a "lamp test" where Request is
yellow and Reply is Red simultaneously for about 1 second, and then both Request and
Reply turn green simultaneously for about 1 second. The LEDs will then begin to
operate according to their normal functionality.
Babel Buster BB3-6101 Request and Reply LEDs reflect Modbus RTU traffic, and the
Ethernet activity LED will indicate network traffic in general. If Modbus RTU is not
being used at all, then the Request and Reply LEDs will indicate TCP traffic. If Modbus
RTU is in use, then the Request and Reply LEDs will indicate Modbus RTU traffic while
the Ethernet LEDs will be the only indication of TCP traffic.
Babel Buster BB3-6101 LEDs indicate as follows (LEDs are bi-color):
REQUEST
Flashes yellow each time a request is sent when operating as
Modbus Master, or each time a request is received when
operating as Modbus Slave.
REPLY
Operating as Modbus Master, flashes green each time a good
response is received, or red when an error code is received,
the request times out, or there is a flaw in the response such
as CRC error.
Operating as Modbus Slave, flashes green each time a good
response is sent, or red if an exception code is sent (meaning
the received request resulted in an error).
Ethernet Activity
Green LED is on solid during portions of the boot-up process,
and then flashes briefly when Ethernet network traffic is
A. Hardware Details
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