Niagara NPB-2X-485 User manual

INSTALL SHEET
RS-485 Option Card
NPB-2X-485
RS-485 Option Card Install Sheet
Part Number 11873 Rev 1.1 Updated:January16, 2012 1
JACE, Niagara Framework, Niagara AX Framework and the Sedona Framework are trademarks of Tridium, Inc.
Thisdocumentcoversthemountingandwiringofthe
NPB‐2X‐485optioncardinaTridium®JACE®
controller,includingmodelsT‐200/600(JACE2/6),
T‐700(JACE7),T‐202/602‐XPR(M2MJACE),or
SecurityJACEseries.
RefertotheappropriateJACE®mountingandwiring
documentforfurtherinstallationdetails.
Included in this Package
Includedinthispackagefindthefollowingitems:
• NPB‐2X‐485optioncard,connectorendplate,and
(ifrecentmodel)four2‐pinjumperblocks.
• Two3‐positionterminalplugs,forwiringtoan
RS‐485network.
• ThisNPB‐2X‐485OptionInstallSheet,Part
Number11873Rev1.1.
Material and Tools Required
Thefollowingmayberequiredforinstallation:
• #2Phillipsscrewdriver:usedtoinstallthecard.
• Smallflat‐bladescrewdriver:usedformaking
wiringconnectionstotheRS‐485networks.
• #1Phillipsscrewdriver:toremoveandrefasten
T‐202/602‐XPRcovers(ifapplicable).
Figure 1 NPB-2X-485 option.
Preparation
Examinethecomponentsideoftheoptioncardtosee
ifbiasresistorjumperpinsareavailable.SeeFigure2.
Ifso,youmaywishtoenablebiasingforeither(or
both)RS‐485portsbeforemountingthecard—you
cannotreachthesejumperswhenthecardisinstalled.
Figure 2 Jumpers to enable RS-485 bias resistors.
Note AnearlierNPB‐2X‐485optioncarddoesnot
haveBiasjumpers.Itoperateslikethenewer
optioncardinfactory‐shippedstate(jumper
blocksnotinstalled—nobiasing).
Installingjumperstoenablebiasingaddstwoonboard
3.3KohmresistorsintoanRS‐485port’scircuit:
• fromRS‐485“+”to5V.
• fromRS‐485“–”toGround.
BiasingsometimesimprovesRS‐485communications
byeliminating“indeterminate”idlestates.
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.
Table 1 NPB-2X-485 option description.
Description Notes / COM Port Assignments
Dual port,
opticallyisolated
RS-485adapter,
with two
3-position,
removable
screw-terminal
connector plugs.
See Figure 3 on
page 2 for
location of
Option Slots 1
and 2 on a
T-200/600.
Recent option cards have jumpers for
enabling onboard bias resistors. See
“Preparation,” page 1, for more details.
Most JACE models have two option slots,
where COM assignments are:
•T-200/600, Security JACE: If single
RS-485 option in Slot 1: COM3, COM4.
If two RS-485 options, ports are Slot 1:
COM3, COM4 and Slot 2: COM5, COM6.
•T-700: If single RS-485 option in Slot 1:
COM5, COM6.
If two RS-485 options, ports are Slot 1:
COM5, COM6 and Slot 2: COM7, COM8.
The T-202/602-XPR series (M2M JACE)
accepts only one option card, where ports
are COM7 and COM8.
Also see “COM Port Usage,” page 3.
SR 584
s
XRXT
XRXT
s
COM3 / COM5
COM7
COM4 / COM6
COM8
See Notes in
Table 1.
Jumper pins to
enable RS-485
Bias resistors
(found on newer
cards only)
to bias
this port
to bias
this port
Screened
diagram shows
how to enable a
port’s Bias
resistors 
(two jumper
blocks on the
header pins).

RS-485 Option Card Install Sheet
Updated: January 16, 2012 Part Number 11873 Rev 1.1
Mounting
Mounting
2
Note RS‐485biasresistorsaredifferentthan
“terminationresistors”,externallyinstalledat
thetwophysicalendsofadaisychained
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two2‐pinjumperblockson
thatport’sjumperheader,asshowninFigure2.To
turnoffbiasing,removeboth2‐pinjumperblocksfrom
thatport’sheader(thefactory‐shippedstate).
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‐485optioncardineitherofthe
optioncardslotsoftheJACE,asneeded.Notethe
T‐202/602‐XPRserieshasonlyoneoptioncardslot.
See“Preparation,”page1fordetailsaboutRS‐485
resistorbiasing,availableonneweroptioncards.
See“COMPortUsage,”page3fordetailsaboutJACE
COMportassignments.
Procedure 1 Mounting NPB-2X-485 option card on a JACE.
1. Remove powerfromtheJACE—seetheprevious
Warning.WaitforallLEDsontheunittobeOff.
2. RemovetheJACEcoverorcovers
(T‐202/602‐XPR).ForallbuttheT‐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
JACE,youmayneedtoslidethemawayfrom
theunittogettothecovertabs.
FortheT‐202/602‐XPR,firstremovetheright
cover,thentheleftcover,retainingthetwoscrews
thatsecureeachcover.
3. IfaT‐200/600seriesorSecurityJACE,removethe
batteryandbracketassemblybytakingoutthe
screwsholdingitinplace,settingscrewsasidefor
later.SeeFigure3.
Figure 3 Remove screws and battery assembly.
Note Thetiewraponthebatterypackshouldhave
itslock“knot”on
top ,asshownin Figure3 . 
Ifnot,cutand remove thetie,then re‐install 
anothertiewrapwithitslocktabontop.

( Tielockatbottominterfereswithoptioncard ).
4. 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.)
Note Slot2optioncardinstallationinaT‐700
controllerrequirescarefulattention!Seethe
T‐700MountingandWiringGuideformore
details.Thisdocumentfocusesoninstallation
inaT‐200/600seriescontroller.
5. CarefullyinsertthepinsoftheNPB‐2X‐485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.
6. Placethecustomendplatethatcamewiththe
NPB‐2X‐485overitsconnector(seeFigure4).
Screws (4)
Option Slot 2
Area
T-200/600
Blanking
End Plate
Battery
Assembly
(includes
cable and
bracket)
Unplug
battery here
Option Slot 1 Area
Tie Wrap
Lock
(see Note)

Wiring COM Port Usage
RS-485 Option Card Install Sheet
Part Number 11873 Rev 1.1 Updated: January 16, 2012 3
Figure 4 NPB-2X-485 inserted, end plate on top.
7. Ifunplugged,plugthebatterycablebackintothe
batteryconnectorontheJACE(seeFigure4for
locationontheT‐200/600).
8. FortheT‐200/600seriesorSecurityJACE,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.
Figure 5 Re-fasten screws.
9. Placethescrewsthroughtheendplate(s),andinto
thestandoffsonthebaseboard.Usinga
screwdriver,handtightenscrews.
10. ReplacetheJACEcoverorcovers
(T‐202/602‐XPR).
11. Ifaccessorymoduleswereunpluggedfromthe
JACE,plugthembackasbefore,andsecure.
Wiring
ConnecttoanRS‐485multipointnetworkusingoneof
the3‐positionscrewterminalconnectors,using
shielded18‐22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‐485endplatelabel—see
Figure1onpage1.
LEDs
FourLEDsarevisibleonthetopoftheNPB‐2X‐485
optioncard(covermustberemovedfromJACE).The
labelontheNPB‐2X‐485endplatenotesthesefour
LEDsas“TX”and“RX”—seeFigure1onpage1.
ThetwoLEDsforeachportaredescribedasfollows:
• TX(yellow)—Transmit,indicatesthattheJACEis
sendingdatatoadeviceconnectedontheRS‐485
trunk.
• RX(green)—Receive,indicatesthattheJACEis
receivingdatafromadeviceconnectedonthe
RS‐485trunk
COM Port Usage
The NPB‐2X‐485 optioncardhastwoonboardUARTs,
andsoaddstwoCOMportsontheinstalledJACE
controller.Thehostedstationautomaticallyresolves
theoption’sCOMaddresses.
• Ifa T‐200/600or SecurityJACE controllerand
installed inOptionSlot1,orifthe only optioncard,
portsareCOM3andCOM4.
• IfaT‐700controllerandinstalledinOptionSlot1,or
ifthe
only optioncard,portsareCOM5andCOM6.
IfinstalledinSlot1ofa
JACE 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aT‐200/600witha
NPB‐2X‐485option
installedinSlot1,andasingleportRS‐232option
(T‐NPB‐232)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
T‐700 controlleryields:
Slot1(RS‐485):COM5,COM6,Slot2(RS‐232):COM7
The NPB‐2X‐485installedintheonly(single)optionslot
ofa T‐202/602‐XPR (M2MJACE)controllerisseenas
COM7andCOM8.
Place custom end
plate over end of
option card.
Insert option card into
option card slot
carefully, with pins
aligned.
Fully seat card.
JACE Battery
Connector
T-200/600
T-200/600
Hand tighten the 
4 screws through
battery bracket,
end plates, into
standoffs.

RS-485 Option Card Install Sheet
Updated: January 16, 2012 Part Number 11873 Rev 1.1
COM Port Usage
COM Port Usage
4
Information and/or specifications published here are current as of the date of publication of this document. Tridium, Inc. reserves the right to change or modify
specifications without prior notice. The latest product specifications can be found by contacting our corporate headquarters, Richmond, Virginia. Products or fea-
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