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Gasboy 9800Q Series Diagnostic Manual User Manual

Page 28

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GASBOY Series 9800Q

3-12

01/28/04

RS-485 INTERFACE PCB (C06389)


The RS-485 Interface PCB allows the 9800Q to communicate on the GASBOY RS-485 loop.
This PCB:

provides protection against noise and damaging voltage transients that may be induced onto
the RS-485 lines

contains diagnostic LED’s to monitor operation of the RS-485 lines.



Connectors
P1 - RS-485 Unprotected from DC Junction Box


P2 - RS-485 Protected to CPU PCB