NPB-2X-RS485 OPTION CARD
3
95-7778—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.
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
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
