Honeywell NX4L1 Installation Guide - Page 43

RS-485 Connection via NetAXS™ with Multidrop Panels at Both Ends

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NetAXS™ NX4L1 Installation 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 reviewed by UL. Figure 20: RS-485 Connection via NetAXS™ with Multidrop Panels at Both Ends COM Port Terminal RS-485 Cable NetAXS Panels TB7-1 (RS485+) TB7-2 (RS485-) TB7-3 (RS485 COM) 4,000 ft. (1,200 m) max, 24 AWG, 2 twisted pairs with shield, 120 ohm, 23 pf (HAS part no. NCP2441-TN) RS-485 (4,000 Ft.) -485 Note DIP Switch Settings S1-S5 Panel Address s S6: OFF J36 CLOSED J37 CLOSED NetAXS Panel EG Only Earth Ground (EG) one side of cable EG EG Only Earth Ground (EG) one side of cable EG EG It is recommended to Earth Ground (EG) each NetAXS enclosure individual NetAXS Access Control Unit NX4L1 Installation Guide, Document 7-901099, Revision A 33

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NetAXS™ NX4L1 Installation
System Configuration
NetAXS Access Control Unit NX4L1 Installation Guide
,
Document 7-901099, Revision A
33
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 reviewed by UL.
Figure 20:
RS-485 Connection via NetAXS™ with Multidrop Panels at Both Ends
COM Port
EG
s
It is recommended to Earth Ground (EG) each NetAXS enclosure individual
EG
-485
Note
Only Earth Ground (EG)
one side of cable
EG
NetAXS
Panel
EG
EG
DIP Switch Settings
S1-S5 Panel Address
S6: OFF
J36 CLOSED
J37 CLOSED
Only Earth Ground (EG)
one side of cable
RS-485 (4,000 Ft.)
RS-485 Cable
NetAXS Panels
TB7-1 (RS485+)
TB7-2 (RS485-)
TB7-3 (RS485 COM)
4,000 ft. (1,200 m) max, 24 AWG, 2 twisted pairs with
shield, 120 ohm, 23 pf (HAS part no. NCP2441-TN)
Terminal