C-11
Appendix C
MINIPLEX Wiring
Overview The RIC must be connected to the host panel via RUI cabling. This section explains how to
wire the two together, and how to set up a system with multiple transponders connected to the
same host panel.
Wiring
Configurations
RUI cabling can be accomplished either through Class A or Class B wiring.
Class A wiring allows transponder cabinets to communicate with the FACP even in the event
of an open circuit somewhere in the loop. Class A wiring requires that two wires are routed
from the CPU motherboard to each RIC, and then back again to the CPU motherboard.
Class B wiring allows “T” tapping, and therefore requires less wiring distance per installation
than Class A. Additionally, Class B wiring does not require end-of-line resistors, because each
RIC communicates directly to the CPU.
• All transponder cabinets are installed within 2500 feet (762 m) of the FACP.
• Conductors test free of all grounds.
• All wires are between 12 and 18 AWG, or as the local code dictates.
Class A Wiring To connect the RUI card to RICs using Class A wiring, read the following instructions and
refer to Figure C-7, on the next page.
1. Route wire between 12 and 18 AWG from the + (TB1-8) and - (TB1-6) terminals on the
COMMS “A” block of the 562-856/565-217 RUI card to the TB1-8 (+) and TB1-6 (-)
terminals on the 565-233 RIC.
2. Route wire from the first RIC to the next one. Repeat for each transponder cabinet within
2500 feet (762 m).
3. Route wire from TB1-7 (+) and TB1-5 (-) on the last RIC to + (TB1-4) and - (TB1-2) on the
COMMS “B” block of the 562-856/565-217 RUI card.
Class B Wiring To connect the RUI card to RIC II cards using Class B wiring, read the following instructions
and refer to Figure C-7, on the next page.
1. Route wire between 12 and 18 AWG from the + (TB1-8) and - (TB1-6) terminals on the
COMMS “A” block of the 562-856/565-217 RUI card to the TB1-8 (+) and TB1-6 (-)
terminals on the 565-233 RIC.
2. Route wire from the first RIC to the next one. Repeat for each transponder cabinet within
2500 feet (762 m).
IMPORTANT: Make sure these prerequisites are accounted for before
wiring:
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