INSTALLATION INSTRUCTIONS
95-7778-01
NPB-2X-RS485 Option Card
APPLICATION
This document covers the mounting and wiring of the
NPB-2X-RS485 option card into a WEBs-AX or CP controller
(WEB/CP-201/600/700, SEC-H-201/600, or WEB/CP-202/
602-XPR series).
Fig. 1. NPB-2X-RS485 option card, ports, and labelling.
NOTE: Refer to the appropriate controller mounting and
wiring document for further controller installation
details.
Included in this Package
Included in this package you should find the following items:
• NPB-2X-RS485 option card, connector end plate, and four
2-pin jumper blocks.
• Two 3-position terminal plugs for wiring to an RS-485
network.
• This
NPB-2X-RS485 Option Card
Installation Instructions
(Honeywell form 95-7778-01).
Material and Tools Required
The following tools and supplies may be required for
installation:
• #2 phillips screwdriver: used to install the NPB-2X-RS485
option card.
• Small flat-blade screwdriver: used for making wiring
connections to the RS-485 networks.
• #1 phillips screwdriver: to remove and refasten WEB/CP-
202/602-XPR covers (if applicable).
Table 1. NPB-2X-RS485 Option Card Description.
Description
COM Port Assignments and Notes
Dual port,
optically isolated
RS-485 adapter,
with two
3-position,
removable
screw-terminal
connector plugs.
The NPB-2X-
RS485 has
jumper blocks that
can be used to
enable onboard
bias resistors.
on page 2, for
more details.
NOTE:
The
controller requires
NiagaraAX build
level 3.1.24 or
higher to use the
NPB-2X-RS485
option.
The WEB/CP-202/602-XPR series
controller accepts only one (1) option
card, where ports for the NPB-2X-RS485
are COM7 and COM8.
For other controller models (WEB/CP-
201/600/700 and SEC-H-201/600) up to
two (2) RS-485 option cards may be
installed, where:
•
If a
single
NPB-2X-RS485 option card
is in Option Slot 1, the ports are COM3,
COM4.
•
If there are
two
NPB-2X-RS485 option
cards, the ports are COM3, COM4 for
Option Slot 1, and COM5, COM6 for
Option Slot 2.
•
If a
single
NPB-2X-RS485 option card
is in Option Slot 2, the ports are COM3,
COM4, unless one of the following
cards are in Option Slot 1:
•
If an NPB-2X-RS485 option card is
in slot 1, then the ports for slot 2 are
COM5, COM6.
•
If an NPB-GPRS option card is in
slot 1, then the ports for slot 2 are
COM4, COM5.
See Fig. 3 on page 2 for location of Option
Slots 1 and 2 on a WEB/CP-201/600/700.
S
R
5
8
4
s
X
R
X
T
X
R
X
T
s
COM3 / COM5
COM7
COM4 / COM6
COM8
See Notes in
