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Installing the NetAXS-123 Panels
Installation
NetAXS-123 Access Control Unit Installation Guide, Document 800-05779, Revision A 45
DIP switch SW1 positions 8 and 9 are provided for supplying biasing and end-of-line termination for
the RS-485 network. The board ships with the switches active. For a Multidrop RS-485 Line, you must
turn ON both switch positions 8 and 9 of SW1. (terminated and biased) at the two end-point panels. At
all other panels, set DIP switches 8 and 9 in the OFF position. Both switches on a given panel must be
set the same. Note that biasing and termination on both ends are present. Use the SW1 positions 8 and
9 ON on both ends of the RS-485 network.
Note: For more information on end of line (EOL) termination, contact Honeywell technical support.
Note: If an RS-485 network has a NetAXS-123 Gateway panel, no N1000-II, N1000-III, N1000-IV, or
NS2 are allowed on the same network. If they are added to a network with a NetAXS-123 Gateway
panel, they will not be able to communicate with the host computer. In order to use these panels, a
N-485-PCI-3 is required, as shown in Figure 9.
Figure 9: RS-485 Configuration via N-485-PCI-3
This configuration supports a combined total of 31 N1000 III, N1000 IV, NetAXS, NetAXS-123, and
NS2 panels per Multidrop line.