Innotech Genesis II Digital Controller (v5) - Manual (Page 93)

Page 93
Genesis II Installation Instructions
© Mass Electronics Pty Ltd 2010 Chapter 4 – Commissioning
4-1.4.2 End of Cable Jumpers
Although the locations of End-of-Cable jumpers are not shown on the computer-generated wiring
diagram, they are easily located close to the unit’s RS485 Comms connector. Figure 4-7 shows the
location of the End-of-Cable jumper for a GENII AI REM unit. Jumpers for other units are similarly
placed. The rule for installing an End-of-Cable jumper is:
• If only one cable is connected into an RS485 Comms connector, a jumper must be installed in that
unit.
• If two cables are connected to the same RS485 Comms connector, the jumper plug must be left
open.
All units along the RS485 Comms network should be carefully checked to ensure that jumpers are
installed only in the last unit in the network.
R
GEN II AI REM
1 2 3
RS485 COMMS
CONNECTIONS
END-OF-CABLE
JUMPER
Figure 4-7: End of Jumper, Typical Location