Mechanical PCU Option
Wiring Diagrams: Pulsers, Pumps, Dispensers
Page 106
MDE-4319A TopKAT Fuel Managment System Installation Manual · November 2005
Figure 7-25: Wiring Diagram: RS-422 - Gasboy Short Haul Modem
Note: In the TopKAT, the green connector goes to P3 on the communication board for port 2
and P5 for port 3.
Note: In cases where a TopKAT internal modem is used, port 3 is not available for external
communication wiring.
Note: The K1 & K2 jumper for the port being used should be set to RS-422. See
for the location of K1 & K2 jumpers.
Figure 7-26: Wiring Diagram: Internal Modem
Note: In cases where a TopKAT internal modem is used, port 3 is not available for external
communication wiring.
Note: The K2 jumper for port 3 should be removed. See
“Terminal Block ID” on page 79
for
the location of the K2 jumper.
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