TIISETSO EA PCI-COM-1S e Fana ka mefuta e fapaneng ea li-interfaces tsa PCI
LBH
P: Ke lokela ho etsa eng haeba thepa ea ka ea ACCES e hlōleha?
A: Ikopanye le ACCES bakeng sa ts'ebeletso le tšehetso e potlakileng. Sheba lipehelo le lipehelo tsa tiisetso bakeng sa tokiso kapa likhetho tse ncha.
P: A na nka kenya karete ka komporo kapa matla a tšimo?
A: Che, kamehla etsa bonnete ba hore motlakase oa komporo o tima pele o hokela kapa o hakolla likhoele kapa o kenya likarete ho qoba tšenyo le ho hlakola litiisetso.
Hlokomela
- Lintlha tse tokomaneng ena li fanoe bakeng sa litšupiso feela. ACCES ha e nke boikarabello bofe kapa bofe ka lebaka la ts'ebeliso kapa ts'ebeliso ea tlhaiso-leseling kapa lihlahisoa tse hlalositsoeng mona. Tokomane ena e kanna ea ba le tlhaiso-leseling le lihlahisoa tse sirelelitsoeng ke litokelo tsa litokelo tsa molao kapa litokelo tsa molao mme ha e fe laesense efe kapa efe tlasa litokelo tsa patent tsa ACCES, kapa litokelo tsa ba bang.
- IBM PC, PC/XT, le PC/AT ke matshwao a kgwebo a ngodisitsweng a International Business Machines Corporation.
- E hatisitsoe USA. Copyright 1995, 2005 ke ACCES I/O Products Inc, 10623 Roselle Street, San Diego, CA 92121. Litokelo tsohle li sirelelitsoe.
TEMOSO!!
KHOKELA KA METSO U KHAOLE CABING EA HAO EA FIELD LE MOTLATSI OA KOMPYUTHA. NAKO TSOHLE TIMA MATLA A KOMPYUTHA PELE O KENYA KARETE. HO HOKOLA LE HO KHAOLA LIKHABELE, KAPA HO KENYA LIKARATE MOTSAMANGENG OA KHOMPUTHA KAPA MATLA A TŠIMO HO KA BAKA TŠENYEHO EA KARETE YA I/O MME HO TLA HLAKOLA DITITISETSO TSOHLE, TSE BONANG KAPA TSE HLAHANG.
Tiisetso
Pele e romelloa, lisebelisoa tsa ACCES li hlahlojoa ka botlalo 'me li lekoa ho latela litlhaloso tse sebetsang. Leha ho le joalo, haeba lisebelisoa li ka senyeha, ACCES e tiisetsa bareki ba eona hore litšebeletso le tšehetso li tla ba teng. Lisebelisoa tsohle tse neng li entsoe ke ACCES tse fumanoeng li sa sebetse li tla lokisoa kapa li nkeloe sebaka ke lintlha tse latelang.
Lipallo le lipehelo
Haeba yuniti e belaelloa hore e hlolehile, ikopanye le lefapha la litšebeletso tsa bareki la ACCES. Itokisetse ho fana ka nomoro ea yuniti ea mohlala, nomoro ea seriale, le tlhaloso ea matšoao a ho hloleha. Re ka fana ka maikutlo a liteko tse bonolo ho netefatsa ho hloleha. Re tla fana ka nomoro ea Return Material Authorization (RMA) e tlamehang ho hlaha ho label e ka ntle ea sephutheloana sa ho khutlisa. Diyuniti/likarolo tsohle di lokela ho pakwa ka nepo bakeng sa ho tshwarwa le ho kgutlisetswa le thepa e lefilweng esale pele Setsing sa Tshebeletso se kgethilweng sa ACCES, mme se tla kgutlisetswa ho moreki/sebaka sa mosebedisi se lefelletseng thepa le invoice.
Kakaretso
Lilemo tse tharo tsa pele: Yuniti/karolo e khutlisitsoeng e tla lokisoa le/kapa e nkeloe sebaka ke khetho ea ACCES ntle le tefiso bakeng sa mosebetsi kapa likarolo tse sa kenyelletsoeng ka waranti. Warranty e qala ka thomello ea thepa.
Lilemo Tse Latelang: Bophelong bohle ba sesebelisoa sa hau, ACCES e ikemiselitse ho fana ka lits'ebeletso tsa setšeng kapa tsa semela ka litheko tse ts'oanang le tsa bahlahisi ba bang indastering.
Thepa ha e Hlahisoe ke ACCES
Thepa e fanoeng empa e sa etsoa ke ACCES e netefalitsoe 'me e tla lokisoa ho latela lipehelo le lipehelo tsa tiisetso ea moetsi oa thepa.
Kakaretso
Tlas'a Tiisetso ena, boikarabello ba ACCES bo lekanyelitsoe ho nkela sebaka, ho lokisa kapa ho fana ka mokoloto (ka boikhethelo ba ACCES) bakeng sa lihlahisoa life kapa life tse bonts'itsoeng li sa sebetse nakong ea tiisetso. Ha ho joalo, ACCES e ikarabella bakeng sa tšenyo e bakiloeng kapa e khethehileng e tsoang ho sebelisoa kapa tšebeliso e mpe ea sehlahisoa sa rona. Moreki o ikarabella bakeng sa litefello tsohle tse bakoang ke liphetoho kapa ho eketsoa ha thepa ea ACCES e sa amoheloang ka lengolo ke ACCES kapa, haeba ka maikutlo a ACCES thepa e sebelisitsoe ka mokhoa o sa tloaelehang. "Tšebeliso e sa tloaelehang" molemong oa tiisetso ena e hlalosoa e le ts'ebeliso efe kapa efe eo sesebelisoa se pepesitsoeng ho eona ntle le ts'ebeliso e boletsoeng kapa e reriloeng joalo ka ha ho pakoa ke thekiso kapa thekiso. Ntle le se boletsoeng ka holimo, ha ho na waranti e 'ngoe, e hlalositsoeng kapa e boletsoeng, e tla sebetsa ho thepa efe kapa efe e joalo e fanoeng kapa e rekisoang ke ACCES.
Selelekela
Karete ena ea Serial Communications e etselitsoe ho sebelisoa lik'homphieutheng tsa PCI-Bus 'me e fana ka puisano e sebetsang ho RS422 (EIA422) kapa RS485 (EIA485) mehala e telele ea puisano. Karete e bolelele ba lisenthimithara tse 4.80 (122 mm) 'me e ka kenngoa sekoting sefe kapa sefe sa 5-volt PCI ho IBM kapa likhomphutha tse tsamaisanang. Ho sebelisoa UART ea mofuta oa 16550, 'me bakeng sa ho lumellana le Windows, ho kenyeletsoa taolo ea othomathike ho nolofalletsa / ho tima bakhanni ba phetisetso.
Mokhoa o leka-lekaneng oa ts'ebetso le ho emisa mojaro
- Ka mokhoa oa RS422, karete e sebelisa bakhanni ba mela e fapaneng (kapa e leka-lekaneng) bakeng sa tšireletso ea lerata le ho eketsa sebaka se phahameng ho isa maotong a 4000. Mokhoa oa RS485 o ntlafala ho RS422 ka li-transceivers tse fetohang le bokhoni ba ho tšehetsa lisebelisoa tse ngata ho "mokha oa mokha" o le mong. Palo ea lisebelisoa tse sebelisoang moleng o le mong e ka atolosoa ka ho sebelisa "li-repeaters".
- Ts'ebetso ea RS422 e lumella baamoheli ba bangata mehalang ea likhokahano mme ts'ebetso ea RS485 e lumella li-transmitters le baamoheli ba 32 ho sete e tšoanang ea mela ea data. Lisebelisoa lipheletsong tsa marang-rang ana li lokela ho felisoa ho qoba "ho lla". Mosebelisi o na le khetho ea ho emisa transmitter le/kapa mehala ea moamoheli.
- Lipuisano tsa RS485 li hloka hore transmitter e fane ka bias voltage ho etsa bonnete ba hore boemo ba "zero" bo tsejoa ha ho se sesebelisoa se fetisang. Karete ena e ts'ehetsa leeme ka kamehla. Haeba sesebelisoa sa hau se hloka hore transmitter e se be leeme, ka kopo ikopanye le feme.
Tšebelisano ea COM Port
- A 16550 UART e sebelisoa e le Asynchronous Communication Element (ACE). E kenyelletsa 16-byte transmit/receive FIFO buffers ho sireletsa khahlanong le data e lahlehileng lits'ebetsong tse ngata tsa ts'ebetso, ha ho ntse ho bolokoa tšebelisano ea liperesente tse 100 le boema-kepe ba pele ba serial ba IBM. Moralo oa libese oa PCI o lumella liaterese tse lipakeng tsa 0000 le FFF8 hex hore li abeloe likarete.
- Oscillator ea kristale kareteng e lumella khetho e nepahetseng ea litekanyetso tsa baud ho fihla ho 115,200 kapa, ka ho fetola jumper, ho fihlela ho 460,800 baud le oscillator e tloaelehileng ea kristale. Sekhahla sa Baud ke lenaneo le khethiloeng 'me litefiso tse fumanehang li thathamisitsoe tafoleng karolong ea Programming ea bukana ena.
- Mokhanni/moamoheli ea sebelisitsoeng, 75ALS176, o khona ho khanna likhoele tsa puisano tse telele haholo ka litheko tse phahameng haholo. E ka khanna ho fihlela ho + 60 mA mehala e leka-lekaneng 'me ea amohela lipehelo tse tlase ho 200 mV pontšo ea phapang e phahametseng lerata le tloaelehileng la +12 V kapa -7 V. Ha ho e-na le likhohlano tsa puisano, mokhanni / ba amohelang ba na le ho koala ha mocheso.
Mekhoa ea puisano
Likarete li tšehetsa puisano ea Simplex, Half-Duplex, le Full-Duplex ka mefuta e fapaneng ea likhokahanyo tsa lithapo tse peli le tse 'nè. Simplex ke mokhoa o bonolo ka ho fetisisa oa puisano o nang le phetisetso e hlahang ka lehlakoreng le le leng feela. Half-Duplex e lumella sephethephethe ho tsamaea ka mahlakore ka bobeli, empa ka tsela e le 'ngoe feela ka nako. Ts'ebetsong ea Full-Duplex, data e tsamaea ka mahlakore ka bobeli ka nako e le 'ngoe. Lipuisano tse ngata tsa RS485 li sebelisa mokhoa oa Half-Duplex hobane ho hloka ho sebelisoa mehala e le 'ngoe feela 'me litšenyehelo tsa ho kenya li fokotsehile haholo.
Taolo ea Transceiver ea Auto-RTS
Lits'ebetsong tsa Windows mokhanni o tlameha ho buloa le ho holofatsoa ha ho hlokahala, ho lumella likarete tsohle ho arolelana thapo ea terata e 'meli kapa e mene. Karete ena e laola mokhanni ka bo eona. Ka taolo ea othomathiki, mokhanni o lumelloa ha data e se e loketse ho fetisoa. Mokhanni o lula a nolofalitsoe bakeng sa nako ea phetisetso ea tlhaku e le 'ngoe ka mor'a hore phetiso ea data e phethehe ebe e koaloa. Moamoheli ka tloaelo o lumelloa empa oa holofala nakong ea phetisetso ebe o buseletsoa hape kamora hore phetiso e phetheloe. Karete e ikamahanya le nako ea eona ho isa tekanyong ea baud ea data.
Litlhaloso
Sehokelo sa Lipuisano
- I/O Connection: Sehokelo sa setaele sa D-sub 9-pin se sirelelitsoeng sa IBM AT se lumellanang le lintlha tsa RS422 le RS485.
- Bolelele ba litlhaku: 5, 6, 7, kapa 8 bits.
- Parity: Leha ho le joalo, e makatsang kapa ha e eo.
- Nako ea ho emisa: 1, 1.5, kapa 2 bits.
- Litefiso tsa data ea serial: Ho fihla ho 115,200 baud, Asynchronous. Litefiso tse potlakileng, ho fihla ho 460,800 baud, li finyelloa ka khetho ea jumper kareteng. Mofuta oa 16550 UART e sirelelitsoeng.
RS422/RS485 Mokhoa o fapaneng oa Puisano
- Sensitivity ea Moamoheli: +200 mV, keno e fapaneng.
- Tloaelehileng Mode Hana: +12V ho -7V
- Bokhoni ba ho khanna: 60 mA transmit output ka ho tima mocheso.
- Multipoint: E lumellana le litlhaloso tsa RS422 le RS485.
Hlokomela
Ho fihlela ho bakhanni ba 32 le ba amohelang ba lumelletsoeng moleng. Lipuisano tsa ACE tse sebelisoang ke mofuta oa 16550. Mokhanni / Li-Receivers tse sebelisoang ke mofuta oa 75ALS176.
Tikoloho
- Sebaka sa Mocheso o sebetsang: 0 ho +60 °C
- Mongobo: 5% ho isa ho 95%, e sa fokotseng.
- Sebaka sa Mocheso oa polokelo: -50 ho ea ho +120 °C
- Boholo: 4.80" bolelele (122mm) ka 1.80" bophahamo (46 mm).
- Matla a Hlokahalang: + 5VDC ho 175 mA e tloaelehileng
Ho kenya
Bukana e hatisitsoeng ea Quick-Start (QSG) e pakiloe ka karete molemong oa hau. Haeba u se u nkile mehato e tsoang ho QSG, u ka fumana khaolo ena e se na thuso, 'me u ka tlolela pele ho qala ho etsa kopo ea hau.
Software e fanoeng ka karete ena e ho CD 'me e tlameha ho kenngoa ho hard disk ea hau pele e sebelisoa. Ho etsa sena, etsa mehato e latelang e loketseng sistimi ea hau ea ts'ebetso.
Lokisa Likhetho tsa Karete ka Khetho ea Jumper
Pele o kenya karete ka har'a komporo ea hau, bala ka hloko Khaolo ea 3: Khetho ea Khetho ea bukana ena, ebe u lokisa karete ho latela litlhoko le protocol ea hau (RS-232, RS-422, RS-485, 4-wire 485, joalo-joalo) . Lenaneo la rona la ho seta Windows le ka sebelisoa hammoho le Khaolo ea 3 ho thusa ho hlophisa li-jumpers kareteng, hammoho le ho fana ka litlhaloso tse eketsehileng bakeng sa ts'ebeliso ea likhetho tse fapaneng tsa likarete (tse kang ho felisoa, leeme, sekhahla sa sekhahla sa baud, RS-232, RS-422, RS-485, joalo-joalo).
CD Software Instola
Litaelo tse latelang li nka hore CD-ROM drive ke "D". Ka kopo kenya lengolo la drive le loketseng bakeng sa sistimi ea hau ha ho hlokahala.
DOS
- Beha CD ka har'a drive ea hau ea CD-ROM.
- Mofuta
ho fetola drive e sebetsang ho CD-ROM drive. - Mofuta
ho tsamaisa lenaneo la ho kenya. - Latela litaelo tse skrineng ho kenya software bakeng sa boto ena.
LIEKETSENG
- Beha CD ka har'a drive ea hau ea CD-ROM.
- Sistimi e lokela ho tsamaisa lenaneo ka bo eona. Haeba lenaneo la ho kenya le sa sebetse hang-hang, tobetsa Qala | TSAMAISA 'me u thaepe
, tobetsa OK kapa tobetsa 
.
Latela litaelo tse skrineng ho kenya software bakeng sa boto ena.
LINUX
Ka kopo sheba linux.htm ho CD-ROM bakeng sa tlhaiso-leseling ea ho kenya tlasa linux.
Tlhokomeliso: Liboto tsa COM li ka kenngoa tsamaisong efe kapa efe ea ts'ebetso. Re ts'ehetsa ho kenya liphetolelong tsa pejana tsa Windows, 'me ho ka etsahala hore re ts'ehetsa le liphetolelo tse tlang.
Tlhokomeliso! * Thepa e le 'ngoe ea ESDA e ka senya karete ea hau mme ea baka ho hloleha pele ho nako!
Ka kopo latela litemoso tsohle tse utloahalang ho thibela ho tsoa ho sa sisinyeheng joalo ka ho ipeha fatše ka ho ama sebaka leha e le sefe se theohileng pele u tšoara karete.
Ho kenya Hardware
- Etsa bonnete ba hore u seta li-switches le li-jumpers ho tsoa karolong ea Khetho ea Khetho ea bukana ena kapa ho tsoa litlhahisong tsa SETUP.EXE.
- Se ke oa kenya karete khomphuteng ho fihlela software e kentsoe ka botlalo.
- TLOA matla a khomphutha LE ho ntša motlakase oa AC ho sistimi.
- Tlosa sekoahelo sa k'homphieutha.
- Kenya karete ka hloko sebakeng se fumanehang sa 5V kapa 3.3V PCI (ho ka 'na ha hlokahala hore u tlose letlapa la mokokotlo pele).
- Lekola hore na karete e lekane hantle 'me u tiise li-screw. Etsa bonnete ba hore borakete ea karete e kenngoeng hantle le hore ho na le sebaka sa chassis se nepahetseng.
- Kenya thapo ea I/O sehokelong se hoketsoeng sa karete.
- Tlosa sekoaelo sa komporo ebe o bulela komporo. Kenya lenaneo la ho seta la CMOS la sistimi ea hau 'me u netefatse hore khetho ea PCI ea plug-and-play e hlophisitsoe ka nepo bakeng sa sistimi ea hau. Litsamaiso tse tsamaisang Windows 95/98/2000/XP/2003 (kapa sistimi efe kapa efe e lumellanang le PNP) li lokela ho beha khetho ea CMOS ho OS. Sistimi e sebetsang tlasa DOS, Windows NT, Windows 3.1, kapa sistimi efe kapa efe e sa lumellaneng le PNP e lokela ho beha khetho ea PNP CMOS ho BIOS kapa Motherboard. Boloka khetho 'me u tsoele pele ho qalisa tsamaiso.
- Likhomphutha tse ngata li lokela ho iphumanela karete (ho latela sistimi e sebetsang) ebe li qeta ho kenya li-driver.
- Matha PCIfind.exe ho qeta ho kenya karete ka har'a registry (bakeng sa Windows feela) le ho fumana lisebelisoa tse fanoeng.
- Matha e 'ngoe ea tse fanoeng sample mananeo a kopitsitsoeng bukeng e ncha ea likarete (ho tsoa ho CD) ho leka le ho netefatsa kopo ea hau.
Khetho ea Khetho
Likhetho tse 'ne tsa tlhophiso li khethoa ke boemo ba jumper joalo ka ha ho hlalositsoe lirapeng tse latelang. Libaka tsa li-jumpers li bontšoa ho Setšoantšo sa 3-1, 'Mapa oa Khetho ea Khetho.
422/485
Jumper ena e khetha mokhoa oa puisano oa RS422 kapa RS485.
Pheliso le Leeme
Mohala oa phetisetso o lokela ho emisoa moo o amohelang teng molemong oa ho qoba "ho lla". Ho kenya jumper sebakeng se ngotsoeng TERMIN ho sebelisa mojaro oa 120Ω hohle ho kenya mokhoa oa RS422. Ka mokhoa o ts'oanang, ho kenya jumper sebakeng se ngotsoeng TERMOUT ho sebetsa 120Ω ho pholletsa le transmit/receive input/output for RS485 operation.
Ts'ebetsong ea RS485, moo ho nang le li-terminals tse ngata, ke likou tsa RS485 feela pheletsong e 'ngoe le e' ngoe ea marang-rang tse lokelang ho ba le li-resistance tse felisang joalo ka ha ho hlalositsoe ka holimo. Hape, bakeng sa ts'ebetso ea RS485, ho tlameha ho ba le leeme meleng ea RX+ le RX-. Karolo ea 422/485 e fana ka leeme lena.
Baud Rate
X1/x4 jumper e khetha oache e tloaelehileng ea 1.8432MHz kapa oache ea 7.3728MHz bakeng sa ho kenya UART. Boemo ba x4 bo fana ka bokhoni ba litefiso tsa baud ho fihla ho 460,800 KHz.
Litšitiso
Nomoro ea IRQ e fanoa ke sistimi. Sebelisa PCIFind.EXE ho fumana hore na IRQ e fuoe karete ke BIOS kapa Sistimi ea Ts'ebetso. Ntle le moo, ho Windows 95/98/NT Mookameli oa Sesebelisoa o ka sebelisoa. Likarete tse thathamisitsoeng tlas'a sehlopha sa Phano ea Lintlha. Ho khetha karete, ho tobetsa Properties, ebe u khetha "Resource" tab e tla bontša aterese ea motheo le IRQ e abetsoeng karete.
Khetho ea Aterese
- Moralo oa PCI ke Plug-and-Play. Sena se bolela hore BIOS kapa Sistimi ea Ts'ebetso e etsa qeto ea lisebelisoa tse abetsoeng likarete tsa PCI, ho fapana le hore mosebelisi a khethe lisebelisoa tsena ka li-switches kapa jumpers. Ka lebaka leo, aterese ea motheo ea karete e ke ke ea fetoloa, e ka khethoa feela. Hoa khonahala ho sebelisa Windows95/98/NT mookameli oa sesebelisoa ho hlakisa lisebelisoa tsa sistimi empa mokhoa oo o kaholimo ho sebaka sa bukana ena.
- Ho fumana aterese ea motheo e fuoeng karete, tsamaisa lenaneo le fanoeng la PCIFind.EXE. Sesebelisoa sena se tla bonts'a lethathamo la likarete tsohle tse fumanoeng beseng ea PCI, liaterese tse abetsoeng tšebetso e 'ngoe le e 'ngoe kareteng ka 'ngoe, le li-IRQ le DMA tse fanoeng (haeba li teng) tse fanoeng.
- Ntle le moo, litsamaiso tse ling tsa ts'ebetso (Windows 95/98/2000) li ka botsoa ho fumana hore na ke lisebelisoa life tse abetsoeng. Litsamaisong tsena tsa ts'ebetso, u ka sebelisa PCIFind kapa sesebelisoa sa Motsamaisi oa Sesebelisoa ho tsoa ho System Properties Applet ea phanele ea taolo. Likarete tsena li kentsoe sehlopheng sa Phano ea Boitsebiso lethathamong la Taolo ea Lisebelisoa. Ho khetha karete ebe o tobetsa Properties, ebe o khetha Thebo ea Lisebelisoa e tla hlahisa lethathamo la lisebelisoa tse abetsoeng karete.
- Bese ea PCI e ts'ehetsa bonyane 64K ea sebaka sa I/O, aterese ea karete ea hau e ka fumaneha kae kapa kae pakeng tsa 0400 ho ea ho FFF8 hex. PCIFind e sebelisa ID ea Morekisi le ID ea Sesebelisoa ho batla karete ea hau ebe e bala aterese ea mantlha le IRQ e abetsoeng. Haeba u batla ho tseba aterese ea motheo le IRQ e abetsoeng, sebelisa lintlha tse latelang:
- Khoutu ea ID ea Morekisi bakeng sa karete ke 494F (ASCII bakeng sa "IO").
- Nomoro ea ID ea sesebelisoa bakeng sa karete ke 10C9.
Lenaneo
Sample Mananeo
Ho na le sample mananeo a fanoeng ka karete ka C, Pascal, QuickBASIC, le lipuo tse 'maloa tsa Windows. DOS sampli fumaneha bukeng ea DOS le Windows sampli fumaneha bukeng ea WIN32.
Windows Programming
Karete e kenya Windows joalo ka likou tsa COM. Kahoo mesebetsi e tloaelehileng ea Windows API e ka sebelisoa.
Ka ho khetheha:
- ThehaFile() le CloseHandle () bakeng sa ho bula le ho koala kou.
- SetupComm(), SetCommTimeouts(), GetCommState(), le SetCommState() ho seta le ho fetola litlhophiso tsa boema-kepe.
- BalaFile() le NgolaFile() bakeng sa ho fihlella boema-kepe.
Sheba litokomane tsa puo eo u e khethileng bakeng sa lintlha tse qaqileng.
Tlas'a DOS, mokhoa ona o fapane haholo. Karolo e setseng ea khaolo ena e hlalosa lenaneo la DOS
Ho qala
- Ho qala chip ho hloka tsebo ea sete ea rejisetara ea UART. Mohato oa pele ke ho seta sekhahla sa sekhahla sa baud. U etsa sena ka ho qala ka ho beha DLAB (Divisor Latch Access Bit) holimo. Benyane ena ke Bit 7 ho Aterese ea Base +3. Ka khoutu ea C, mohala o tla ba: outportb (BASEADDR +3,0×80);
- Ebe u kenya karohano ho Base Address +0 (low byte) le Base Address +1 (high byte). Equation e latelang e hlalosa kamano pakeng tsa sekhahla sa baud le divisor:
- Baud Rate e lakatsehang = (UART oache frequency) ÷ (32 * divisor)
- Ha Baud jumper e le maemong a X1, maqhubu a oache ea UART ke 1.8432 Mhz. Ha jumper e le boemong ba X4, maqhubu a oache ke 7.3728 Mhz. Tafole e latelang e thathamisa maqhubu a tsebahalang a diviso. Hlokomela hore ho na le litšiea tse peli tse lokelang ho nahanoa ho itšetlehile ka boemo ba Baud jumper.
Baud Sekhahla Karohano x1 Karohano x4 Max Phapang. Cable Bolelele* 460800 – 1 550ft 230400 – 2 1400ft 153600 – 3 2500ft 115200 1 4 3000ft 57600 2 8 4000ft 38400 3 12 4000ft 28800 4 16 4000ft 19200 6 24 4000ft 14400 8 32 4000ft 9600 12 48 - E Tloaelehileng ka ho Fetisisa 4000ft 4800 24 96 4000ft 2400 48 192 4000ft 1200 96 384 4000ft * Bohole bo boholo bo khothalelitsoeng bakeng sa likhoele tsa data tse tsamaisoang ka mokhoa o fapaneng (RS422 kapa RS485) ke tsa maemo a tloaelehileng.
Lethathamo la 5-1: Litekanyetso tsa Baud Rate Divisor
Ho C, khoutu ea ho beha chip ho 9600 baud ke:
outportb(BASEADDR, 0x0C);
outportb(BASEADDR +1,0);
Mohato oa bobeli oa ho qala ke ho beha Rejistara ea Taolo ea Line ho Aterese ea Base + 3. Rejisetara ena e hlalosa bolelele ba mantsoe, li-stop bits, parity, le DLAB. Bits 0 le 1 laola bolelele ba lentsoe le ho lumella bolelele ba mantsoe ho tloha ho 5 ho isa ho 8 bits. Li-setting tsa Bit li ntšoa ka ho tlosa 5 ho bolelele ba lentsoe le lakatsehang. Bit 2 e lekanya palo ea li-stop bits. Ho ka ba le li-stop bits tse le 'ngoe kapa tse peli. Haeba Bit 2 e setetsoe ho 0, ho tla ba le sekheo se le seng. Haeba Bit 2 e setetsoe ho 1, ho tla ba le li-stop bits tse peli. Li-bits 3 ho isa ho tse 6 li laola parity le ho senya li nolofalletsa. Ha li sebelisoe hangata bakeng sa likhokahano 'me li lokela ho hlophisoa ho zero. Bit 7 ke DLAB e boletsoeng pejana. E tlameha ho hlophisoa ho zero ka mor'a hore karohano e kenngoe kapa ho seng joalo ho ke ke ha ba le puisano.
Taelo ea C ea ho beha UART bakeng sa lentsoe la 8-bit, ha ho na parity, 'me e le 'ngoe ea ho emisa ke:
outportb(BASEADDR +3, 0x03)
Mohato oa ho qetela oa ho qala ke ho hlakola li-buffers tsa moamoheli. U etsa sena ka ho bala habeli ho tsoa ho buffer ea moamoheli ho Base Address +0. Ha e felile, UART e se e loketse ho sebelisoa.
Kamohelo
Kamohelo e ka sebetsoa ka mekhoa e 'meli: likhetho le tse tsamaisoang ke tšitiso. Ha ho etsoa likhetho, kamohelo e finyelloa ka ho lula u bala Linepe ea Boemo ba Boemo ho Aterese ea Base +5. Bit 0 ea rejisetara ena e behiloe holimo neng kapa neng ha data e se e loketse ho baloa ho tsoa ho chip. Loop e bonolo ea likhetho e tlameha ho lula e lekola karolo ena 'me e bale data ha e ntse e fumaneha. Sekhechana se latelang sa khoutu se kenya tšebetsong loop ea likhetho 'me se sebelisa boleng ba 13, (ASCII Carriage Return) joalo ka lesupa la pheletso ea phetisetso:
Lipuisano tse tsamaisoang ke tšitiso li lokela ho sebelisoa neng kapa neng ha ho khoneha 'me li hlokeha bakeng sa litefiso tse phahameng tsa data. Ho ngola seamoheli se tsamaisoang ke tšitiso ha se ntho e thata ho feta ho ngola moamoheli o hlahlobiloeng empa tlhokomelo e lokela ho nkuoa ha u kenya kapa u tlosa sebatli sa hau se sitisang ho qoba ho ngola tšitiso e fosahetseng, ho tima tšitiso e fosahetseng, kapa ho tima litšitiso ka nako e telele haholo.
Motho ea sebetsanang le eena o tla qala ka ho bala Rejistara ea Boitsebiso ba Tšitiso ho Aterese ea Batla +2. Haeba tšitiso e le ea Received Data Available, motshwari joale o bala data. Haeba ho se na tšitiso e sa lebelloang, taolo e tsoa tseleng. A sample handler, e ngotsoeng ka C, e tjena:
Phetiso
Phetiso ea RS485 e bonolo ho e sebelisa. Sebopeho sa AUTO ka mokhoa oa RS485 se thusa transmitter ka bo eona ha data e se e loketse ho romelloa, kahoo ha ho hlokahale hore ho be le software. Software e latelang example ke ea ts'ebetso e seng ea AUTO ka mokhoa oa RS422. Pele mola oa RTS o lokela ho behoa holimo ka ho ngola 1 ho Bit 1 ea Rejistara ea Taolo ea Modem ho Aterese ea Base +4. Mohala oa RTS o sebelisetsoa ho fetola transceiver ho tloha mokhoeng oa ho amohela ho ea ho mokhoa oa ho fetisa le ka tsela e fapaneng.
Ka mor'a hore se boletsoeng ka holimo se etsoe, karete e se e loketse ho romela data. Ho fetisetsa letoto la data, transmitter e tlameha ho qala ka ho hlahloba Bit 5 ea Line Status Register ho Base Address +5. Karolo eo ke folakha e se nang letho ea transmitter-holding-register. Haeba e phahame, transmitter e rometse data. Ts'ebetso ea ho hlahloba hanyane ho fihlela e nyoloha e lateloa ke ho ngola e phetoa ho fihlela ho se na data e setseng. Ka mor'a hore data eohle e fetisetsoe, karolo ea RTS e lokela ho tsosolosoa ka ho ngola 0 ho Bit 1 ea Register Register ea Modem.
Sekhechana se latelang sa khoutu sa C se bonts'a ts'ebetso ena:
Tlhokomeliso
Karolo ea OUT2 ea UART e tlameha ho hlophisoa 'NETE' bakeng sa puisano e nepahetseng e tsamaisoang ke tšitiso. Software ea lefa e sebelisa karolo ena ho sitisa liheke mme karete e kanna ea se buisane haeba bit 3 ea registara 4 (Modem Control Register) e sa hlophisoa.
Likabelo tsa Pin ea Sehokelo
Sehokelo sa subminiature se tsebahalang sa 9-pin D se sebelisetsoa ho hokahana le mela ea puisano. Sehokelo se na le li-standoffs tse 4-40 tse khoele (senotlolo sa basali) ho fana ka phomolo ea khatello.
| Pin Che. | Kabelo |
| 1 | Rx– (Amohela Lintlha) |
| 2 | Tx+ (Fetisetsa Lintlha) |
| 3 | Tx– (Fetisetsa Lintlha) |
| 4 | |
| 5 | GND (Sebaka sa Letšoao) |
| 6 | |
| 7 | |
| 8 | |
| 9 | Rx+ (Amohela Lintlha) |
Data Cable Wiring
Tafole e latelang e bonts'a likhokahano tsa phini lipakeng tsa lisebelisoa tse peli bakeng sa ts'ebetso ea Simplex, Half -Duplex le Full- Duplex.
| Mokhoa | Karete 1 | Karete 2 |
| Simplex, 2-terata, amohela feela, RS422 | Rx+ phini 9 | Tx+ pin 2 |
| Rx-pin 1 | Tx-pin 3 | |
| Simplex, 2-terata, fetisa feela, RS422 | Tx+ pin 2 | Rx+ phini 9 |
| Tx-pin 3 | Rx-pin 1 | |
| Half-Duplex, 2-terata, RS485 | Tx+ pin 2 | Tx+ pin 2 |
| Tx-pin 3 | Tx-pin 3 | |
| Full-Duplex, 4-terata, RS422 | Tx+ pin 2 | Rx+ phini 9 |
| Tx-pin 3 | Rx-pin 1 | |
| Rx+ phini 9 | Tx+ pin 2 | |
| Rx-pin 1 | Tx-pin 3 |
Sehlomathiso A: Maikutlo a Kopo
Selelekela
Ho sebetsa ka lisebelisoa tsa RS422 le RS485 ha ho fapane haholo le ho sebetsa ka lisebelisoa tse tloaelehileng tsa RS232 mme litekanyetso tsena tse peli li hlola bofokoli maemong a RS232. Ntlha ea pele, bolelele ba cable pakeng tsa lisebelisoa tse peli tsa RS232 bo tlameha ho ba bokhutšoanyane; ka tlase ho maoto a 50. Ea bobeli, liphoso tse ngata tsa RS232 ke litholoana tsa lerata le bakoang ke likhoele. Tekanyetso ea RS422 e lumella cable hore e bolelele ba limithara tse 5000, 'me, kaha e sebetsa ka mokhoa o fapaneng, ha e khone ho ba le lerata le bakoang.
Likamano pakeng tsa lisebelisoa tse peli tsa RS422 (tse nang le CTS e hlokomolohuoang) li lokela ho ba tse latelang:
| Sesebelisoa #1 | Sesebelisoa #2 | ||||
| Letshwao | 9 pin | 25 pin | Letshwao | 9 pin | 25 pin |
| Gnd | 5 | 7 | Gnd | 5 | 7 |
| TX+ | 2 | 24 | RX+ | 9 | 12 |
| TX– | 3 | 25 | RX– | 1 | 13 |
| RX+ | 9 | 12 | TX+ | 2 | 24 |
| RX– | 1 | 1 | TX– | 3 | 25 |
Letlapa A-1: Likamano Pakeng tsa Lisebelisoa tse peli tsa RS422
Khaello ea boraro ea RS232 ke hore lisebelisoa tse fetang tse peli ha li khone ho arolelana thapo e le 'ngoe. Sena ke 'nete le ho RS422 empa RS485 e fana ka melemo eohle ea RS422 plus e lumella lisebelisoa tse ka bang 32 ho arolelana lipara tse tšoanang tse sothehileng. Mokhelo ho se boletsoeng ka holimo ke hore lisebelisoa tse ngata tsa RS422 li ka arolelana thapo e le 'ngoe haeba e le 'ngoe feela e tla bua 'me tse ling li tla lula li amohela.
Lipontšo tse fapaneng tse leka-lekaneng
Lebaka leo ka lona lisebelisoa tsa RS422 le RS485 li ka khanna mela e melelele e nang le tšireletso ea lerata ho feta lisebelisoa tsa RS232 ke hore ho sebelisoa mokhoa o leka-lekaneng oa phapang. Ka tsamaiso e leka-lekaneng ea phapang, voltage hlahisoang ke mokhanni e hlaha ka mose ho para ea lithapo. Mokhanni oa mohala o leka-lekaneng o tla hlahisa molumo oa phapangtage ho tloha ho +2 ho ea ho +6 volts ho pholletsa le li-terminals tsa eona tse hlahisoang. Mokhanni oa mohala o leka-lekaneng a ka boela a ba le pontšo ea "enable" e kopanyang mokhanni ho li-terminals tsa eona tsa tlhahiso. Haeba lets'oao la "enable" le TIMA, mokhanni o hakoa mothating oa phetiso. Boemo bona bo khaotsoeng kapa bo holofetseng hangata bo bitsoa boemo ba "tristate" mme bo emela ts'ireletso e phahameng. Bakhanni ba RS485 ba tlameha ho ba le bokhoni bona ba ho laola. Bakhanni ba RS422 ba ka ba le taolo ena empa ha e hlokehe kamehla. Moamoheli oa mola o leka-lekaneng o utloa molumotage boemo ba mohala oa phetiso ho pholletsa le mela e 'meli ea ho kenya matšoao. Haeba phapang e kenyang voltage e kholo ho feta +200 mV, moamoheli o tla fana ka boemo bo itseng ba kelello mabapi le tlhahiso ea eona. Haeba phapang voltage input e ka tlase ho -200 mV, moamoheli o tla fana ka boemo bo fapaneng ba kelello mabapi le tlhahiso ea eona. Boholo bo sebetsang ka matlatage tsoa ho +6V ho ea ho -6V e lumellang hore ho be le voltage attenuation e ka etsahalang ka lithapo tse telele tsa phetiso.
Boemo bo phahameng bo tloaelehileng voltagtekanyo ea e +7V e fana ka tšireletso e ntle ea lerata ho tloha ho voltage hlohlelletsoa meleng e sothehileng. Khokahano ea mohala oa lets'oao e ea hlokahala molemong oa ho boloka mokhoa o tloaelehileng oa voltage ka hare ho sebaka seo. Potoloho e ka sebetsa ntle le khokahanyo ea fatše empa e ka 'na ea se ke ea tšepahala.
| Paramethara | Maemo | Min. | Max. |
| Mokhanni Output Voltage (e laoloe) | 4V | 6V | |
| -4V | -6V | ||
| Mokhanni Output Voltage (e tletse) | TERM | 2V | |
| jumpers in | -2V | ||
| Mokhanni Output Resistance | 50Ω | ||
| Mokhanni Output Short-Circuit Current | +150 mA | ||
| Nako ea Phahamiso ea Mokhanni | 10% karohano ea yuniti | ||
| Boikutlo ba ho amohela | +200 mV | ||
| Receiver Common Mode Moqtage Range | +7V | ||
| Receiver Inpust Resistance | 4KΩ |
Lethathamo la A-2: Kakaretso ea Litlhaloso tsa RS422
Ho thibela lipontšo tsa mats'oao ho thapo le ho ntlafatsa ho hana lerata ka mokhoa oa RS422 le RS485, pheletso ea moamoheli ea mohala e lokela ho felisoa ka khanyetso e lekanang le ts'ebetso e ts'oanang ea thapo.
Hlokomela
Ha ho hlokahale hore u kenye sehanyetsi sa terminator likhoeleng tsa hau ha u sebelisa karete. Lihanyetsi tsa ho emisa bakeng sa RX+ le RX- mela li fanoe ka karete 'me li behoa potolohong ha u kenya li-jumpers tsa TERM. (Sheba karolo ea Kgetho ya Bukana ena.)
Phetiso ea data ea RS485
RS485 Standard e lumella mohala o leka-lekaneng oa phetisetso hore o arolelanoe ka mokhoa oa mokha. Lipara tse ka bang 32 tsa bakhanni/baamoheli li ka arolelana marang-rang a mekha e 'meli. Litšobotsi tse ngata tsa bakhanni le ba amohelang li tšoana le tsa RS422 Standard. Phapang e 'ngoe ke hore mokhoa o tloaelehileng oa voltagmoeli oa e oa atolosoa mme ke +12V ho ea ho -7V. Kaha mokhanni ofe kapa ofe a ka hangoa (kapa a khelosoa) moleng, e tlameha ho mamella mokhoa ona o tloaelehileng oa voltage range ha e ntse e le maemong a mararo.
RS485 Network Wire Multidrop Network
Setšoantšo se latelang se bontša marang-rang a mangata a mangata kapa a liphathi. Hlokomela hore khoele ea phetiso e felisitsoe lipheletsong tse peli tsa mohala empa eseng libakeng tse theohang bohareng ba mohala.
RS485 Network Wire Multidrop Network
Marang-rang a RS485 a ka boela a hokeloa ka mokhoa oa terata e mene. Ka marang-rang a mane ho hlokahala hore node e le 'ngoe e be node e kholo' me ba bang kaofela e be makhoba. Marang-rang a kopantsoe e le hore monghali a buisane le makhoba 'ohle' me makhoba 'ohle a buisane le mong'a lona feela. Sena se na le advantage ka thepa e sebelisang puisano ea protocol e tsoakiloeng. Kaha li-node tsa makhoba ha ho mohla li mamelang karabo ea lekhoba le leng ho monghali, node ea lekhoba e ke ke ea araba ka tsela e fosahetseng.
Maikutlo a Bareki
Haeba u na le mathata ka bukana ena kapa u batla ho re fa maikutlo a itseng, ka kopo re romelle imeile ho: manuals@accesio.com.
10623 Roselle Street, San Diego CA 92121 Tel. (858)550-9559 FAX (858)550-7322 www.accesio.com
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