Echelon LonWorks Router Manual de usuario descargar pdf (Pagina 52)

Table 11. Service LED Behavior during Different States

Device State State Code Service LED

Applicationless and

Unconfigured

3 On

Unconfigured (but with

an Application)

2 Flashing

Configured, Hard Offline 6 Off

Configured 4 Off

Defective External

Memory

— On

The SVC~ pin is active low, and the service pin message is sent once per SVC~

pin transition. The service pin message goes into the next available non-priority

output network buffer.

Typical applications do not require debounce conditioning of a momentary

pushbutton attached to the SVC~ pin. The software response time associated

with this input is long enough to effectively provide a software debounce for

switches with a contact bounce settling time as long as 20 milliseconds.

If your router uses a Series 3100 half-router for one of its sides, you can connect

the Series 5000 router’s SVC~ pin to the Series 3100 SERVICE~ pin, as shown

in Figure 19, using the Series 3100 Smart Transceiver’s +5 V power supply for

the Service switch, LEDs and diode clamps.

See the Series 5000 Chip Data Book for more information about the SVC~ pin for

a Series 5000 chip, including the Router 5000 and FT Router 5000.

42 LONWORKS Router Electrical Interfaces

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Echelon LonWorks Router Manual de usuario Pagina 52