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Revision: R01
USER INTERFACE
S1 and S2 buttons
Buttons S1 and S2 are used to set the U2L converter in preliminary defined state according to IFSF-LON
specification. By pressing and keeping both of these buttons pressed in power-off state at powering on the
device all of the configuration parameters are reset to their default values.
Indication LEDs
LED NAME
POWER
Indicates when the
main power is applied
Activity
Indicates proper
activity
Status
Indicates system error
TX
Indicates transmitting
over RS-485 interface
RX
Indicates reception
over RS-485 interface
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U2L CONVERTER TECHNICAL GUIDE
FUNCTION
ON CONDITION
Main power
presence
Blinking with 1
second interval
Review date: 1 October, 2021
OFF CONDITION
Orange
Main power
is off
Green
Green color for OK
Red color for error
Green
Red
COLOR
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