RS485 External Connection
The 4 wire external RS485 connections should be made as below:
Main Panel First Sub-panel or Repeater
LOOP OUT LOOP IN
TX1 A RX1 A
TX1 B RX1 B
RX2 A TX2 A
RX2 B TX2 B
Then continue to connect OUT of one Repeater/Sub-panel to IN of the next Repeater/Sub-Panel following the same
connection rules as above.
When you reach the last Repeater/Sub-panel in the loop make the connections as follows:
Main Panel Last Sub-panel or Repeater
LOOP IN LOOP OUT
RX1 A TX1 A
RX1 B TX1 B
TX2 A RX2 A
TX2 B RX2 B
J-NET-RS485-INT-NEW
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Manufacturers of Fire Detection Equipment
INSTALLATION & COMMISSIONING MANUAL REVISION 4.0 05/2013
JUNO NET - NETWORKABLE ADRESSABLE PANEL
globalfire.pt
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