Rs-485 Connections With Multidrop Panels At Both Ends Of The Cable; Figure 20: Rs-485 Connection Via Netaxs With Multidrop Panels At Both Ends - Honeywell NetAXS NX4L1 Installation Manual

NetAXS™ NX4L1 Installation Guide
System Configuration

5.3 RS-485 Connections with Multidrop Panels at Both Ends of the Cable

You can connect Multidrop panels at both ends of an RS-485 cable via either a NetAXS panel or a
PCI-2 device. This connection has not been approved by UL.

Figure 20: RS-485 Connection via NetAXS with Multidrop Panels at Both Ends

4,000 ft. (1,200 m) max, 24 AWG, 2 twisted pairs with
shield, 120 ohm, 23 pf (HAS part no. NCP2441-TN)
DIP Switch Settings
S1-S5 Panel Address
S6: OFF
J36 CLOSED
J37 CLOSED
EG
44
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COM Port
Terminal
RS-485 Cable
NetAXS Panels
TB7-1 (RS485+)
TB7-2 (RS485-)
TB7-3 (RS485 COM)
DIP Switch Settings
S1-S5 Panel Address
S6: OFF
J36 OPEN
J37 OPEN
NetAXS NetAXS
Panel Panel
EG
Only Earth Ground (EG)
one side of cable
EG
It is recommended to Earth Ground (EG) each NetAXS enclosure individual
NetAXS
Gateway
DIP Switch Settings
S1-S5: Panel Address
S6: ON
J36 OPEN
J37 OPEN
DIP Switch Settings
S1-S5 Panel Address
S6: OFF
J36 CLOSED
J37 CLOSED
NetAXS
Panel
EG
EG
EG
RS-485 (4,000 ft.)
Refer to
NetAXS/NetAXS
Panel Connection
Detail diagram
See
RS-485
Cable
DIP Switch Settings
S1-S5 Panel Address
S6: OFF
J36 OPEN
J37 OPEN
NetAXS
Panel
EG
Only Earth Ground (EG)
one side of cable
EG