Emerson MultiFlex RTU, Инструкция по установке и эксплуатации

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18 • MultiFlex RTU Operator’s Guide 026-1706 Rev 3
5.4. The Code B LED
The Code B LED is an indicator of the state of
the I/O network. When this LED is flashing once
every four seconds, the RTU is communicating
properly on the I/O network. When the LED is
flashing once every two seconds, the board is not
properly communicating on the I/O network.
5.5. Relay Output LEDs
Each relay output point on a MultiFlex has an
indicator LED that shows the status of the
output. This LED is lit to show the output is ON,
and unlit to show the output is OFF.
The definition of ON and OFF in this case is
determined by the position of the fail-safe dip
switch (see
Table 4-5
and
Table 4-6
).