Honeywell NPB-2X-RS485 User manual

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.
•ThisNPB-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.
See “Preparation”
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.
SR
584
s
XRXT
XRXT
s
COM3 / COM5
COM7
COM4 / COM6
COM8
See Notes in
Table 1.

NPB-2X-RS485 OPTION CARD
95-7778—01 2
Preparation
Examine the component side of the option card to locate the
bias resistor jumper pins. See Fig. 2. You may wish to enable
biasing for either (or both) RS-485 ports before mounting the
card.
Fig. 2. Jumpers to enable RS-485 Bias resistors.
NOTE: You cannot reach these jumpers when the card is
installed.
In general, only one device on an RS-485 trunk should be
biased. Otherwise, undue loading of the circuit may result,
with fewer devices supported.
NOTE: RS-485 bias resistors are different than termination
resistors. They are externally installed at the two
physical ends of a daisy chained RS-485 trunk
across the + and – terminals. Termination resistors
are typically 100 or 120 ohm value resistors.
Whenever termination resistors are used, RS-485
biasing is typically required.
To enable biasing, install the two 2-pin jumper blocks
(provided in this package) on that port’s jumper header, as
shown in Fig. 2. To turn off biasing, remove both 2-pin jumper
blocks from that port’s header.
NOTE: The factory-shipped state is with the jumper blocks
removed.
Installing jumpers to enable biasing adds two onboard 3.3K
ohm resistors into an RS-485 port’s circuit:
• from RS-485 positive (+) to 5V.
• from RS-485 negative (–) to Ground.
Biasing can improve RS-485 communications by eliminating
indeterminate idle states.
MOUNTING
WARNING
Power to the controller must be OFF when
installing or removing option cards, or damage
will occur!
Also, you must be very careful to plug any option card
into its connector properly (pins aligned).
Mount the NPB-2X-RS485 option card in either of the option
card slots of the controller, as needed. Note the WEB/CP-202/
602-XPR series has only one option card slot.
Mounting the NPB-2X-RS485 option
card on a controller
Refer to the “Preparation” section on this page for details
about RS-485 resistor biasing.
See “COM Port Usage” on page 3 for details about COM port
assignments for the controller.
1. Remove power from the controller. Wait for all LEDs on
the unit to be Off.
2. Remove the controller cover or covers (WEB/CP-202/
602-XPR).
For all but the WEB/CP-202/602-XPR, press in the four
tabs on both ends of the unit, and lift the cover off.
NOTE: If accessory modules are plugged into the con-
troller, you may need to slide them away from
the unit to get to the cover tabs.
3. For the WEB/CP-202/602-XPR, first remove the right
cover, then the left cover, retaining the two screws that
secure each cover.
4. For all but the WEB/CP-202/602-XPR, remove the
battery and bracket assembly by taking out the screws
holding it in place, setting the screws aside for later.
Unplug the battery from the connector on the controller.
See Fig. 3 on page 2 for an exploded view.
Fig. 3. Remove battery assembly.
5. Remove the blanking end plate for the slot you are
installing the option card into.
(Retain the blanking end plate in case the option card
must be removed at a later date.)
ENABLE
BIAS
SCREENED DIAGRAM SHOWS HOW TO ENABLE THE BIAS
RESISTORS BY INSERTING TWO JUMPER BLOCKS
OVER EACH SET OF PINS.
BIAS JUMPER BLOCKS IN PLACE; TWO FOR EACH PORT.
1
1
2
2
TO BIAS
THIS PORT
TO BIAS
THIS PORT
Screws (4)
Option Slot 2
Area
WEB/CP-201/600/
700
Blanking
End
Plate
Battery
Assembly
(includes
cable and
bracket)
Unplug battery here
Option Slot 1
Area

NPB-2X-RS485 OPTION CARD
395-7778—01
6. If you wish to enable biasing for one or both RS-485
ports, be sure to set the jumpers on the NPB-2X-RS485
option card before installing the card onto the controller.
7. Carefully insert the pins of the NPB-2X-RS485 into the
socket of the appropriate option card slot. The mounting
holes on the option board should line up with the
standoffs on the base board. If they do not, the
connector is not properly aligned. Press until the option
card is completely seated.
8. Place the connector end plate that came with the
NPB-2X-RS485 over its connector (see Fig. 3 and Fig.
4).
Fig. 4. NPB-2X-RS485 inserted, end plate on top.
9. Plug the battery cable into the battery connector on the
controller (see Fig. 4 for location on the WEB/CP-201/
600/700).
10. For all but the WEB/CP-202/602-XPR, set the battery
and bracket assembly back over the option card slots,
with mounting holes aligned with the standoffs. Screws
enter holes in the battery bracket first, see Fig. 3.
11. Place the screws through the end plate(s), and into the
standoffs on the base board. Using a screwdriver, hand
tighten the screws (see Fig. 5 for location on the WEB/
CP-201/600/700).
Fig. 5. Re-fasten screws through battery bracket.
12. Replace the controller cover or covers (WEB/CP-202/
602-XPR).
If accessory modules were unplugged from the
controller, plug them back as before, and secure.
WIRING
To connect to an RS-485 multipoint network, use one of the
3-position screw terminal connectors with shielded 18 to 22
AWG wiring. Refer to the TIA/EIA-485 standard for more
details. Screw terminals are minus (–), plus (+), and shield
(S), as indicated on the NPB-2X-RS485 end plate label. See
Fig. 1 on page 1.
LEDS
Four LEDs are visible on the top of the NPB-2X-RS485 option
card (cover must be removed from controller). They are also
noted on the label as TX and RX. See Fig. 1 on page 1.
The four LEDs (two for each port) are described as follows:
• TX (yellow) — Transmit, indicates that the controller/option
card is sending data to a device.
• RX (green) — Receive, indicates that the controller/option
card is receiving data from a device.
COM PORT USAGE
The NPB-2X-RS485 option card has two onboard UARTs, and
so adds two COM ports on the installed controller. The hosted
station automatically resolves the option’s COM addresses.
Refer to Table 2 on page 4 for the COMM port assignments
for specific controller and option card configurations.
WEB/CP
Battery
Connector
Insert option card into
option card slot carefully,
with pins aligned.
Fully seat card.
WEB/CP-201/
600/700
Place custom end
plate over end of
option card.
Hand tighten the 4
screws through
battery bracket,
end plates, into
standoffs.
WEB/CP-201/
600/700

NPB-2X-RS485 OPTION CARD
Automation and Control Solutions
Honeywell International Inc.
1985 Douglas Drive North
Golden Valley, MN 55422
Honeywell Limited-Honeywell Limitée
35 Dynamic Drive
Toronto, Ontario M1V 4Z9
customer.honeywell.com
® U.S. Registered Trademark
© 2010 Honeywell International Inc.
95-7778—01 M.S. 08-10
Printed in U.S.A.
WEB/CP-202/602-XPR Controller
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.
WEB/CP-201/600/700 and SEC-H-201/600
Controllers
For the controller models WEB/CP-201/600/700 and
SEC-H-201/600) up to two RS-485 option cards may be
installed, where:
•If a single RS-485 option is in Option Slot 1, the ports are
COM3, COM4.
•If there are two RS-485 options, 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.
• If a WEB/CP-700 controller and installed in Option Slot 1,
or if the only option card, ports are COM5 and COM6.
If the option card is installed in Slot 1 of a controller along with
another option card that uses COM ports in Option Slot 2,
note that COM assignments for that other card are affected:
• For example, if a WEB/CP-201/600 with an
NPB-2X-RS485 option installed in Slot 1, and a single port
RS-232 option (NPB-RS232) installed in Slot 2, COM
assignments are: Slot 1 (RS-485): COM3, COM4, Slot 2
(RS-232): COM5.
• The same option card mix in a WEB/CP-700 controller
yields: Slot 1 (RS-485): COM5, COM6, Slot 2 (RS-232):
COM7
• The NPB-2X-RS485 installed in the only (single) option slot
of a WEB/CP-202/602 controller is seen as COM7 and
COM8.
Table 2. COM Port Assignments Based on Controller and Option Card Configuration.
Controller Model Slots Used
Card Slot 1 Card Slot 2
1st Option Card COM Ports 2nd Option Card COM Ports
SEC-H-201/600 1 only NPB-2X-RS485 COM3 COM4 Not Used (Empty)
1 and 2 Not Used (Empty) NPB-2X-RS485 COM3 COM4
1 and 2 NPB-2X-RS485 COM3 COM4 NPB-2X-RS485 COM5 COM6
1 and 2 NPB-GPRS COM3 NPB-2X-RS485 COM4 COM5
WEB/CP-201/600 1 only NPB-2X-RS485 COM3 COM4 Not Used (Empty)
2 only Not Used (Empty) NPB-2X-RS485 COM3 COM4
1 and 2 NPB-2X-RS485 COM3 COM4 NPB-RS232 COM5
1 and 2 NPB-2X-RS485 COM3 COM4 NPB-2X-RS485 COM5 COM6
1 and 2 NPB-GPRS‘ COM3 NPB-2X-RS485 COM4 COM5
WEB/CP-700 1 only NPB-2X-RS485 COM5 COM6 Not Used (Empty)
1 and 2 NPB-2X-RS485 COM5 COM6 NPB-RS232 COM7
1 and 2 NPB-2X-RS485 COM5 COM6 NPB-2X-RS485 COM7 COM8
WEB/CP-202/602-XPR 1 only NPB-2X-RS485 COM7 COM8 There is no second card slot.
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