VRKF-15C-200 VRKF-15C-200
在總線兩端連接有端結(jié)器(或終端匹配器)，主要與總線進行阻抗匹配，限度吸收傳送端部的能量，避免信號反射回總線產(chǎn)生不必要的干擾。
總線結(jié)構(gòu)是使用同一媒體或電纜連接所有端用戶的一種方式，也就是說，連接端用戶的物理媒體由所有設備共享，各工作站地位平等，無中央結(jié)點控制，公用總線上的信息多以基帶形式串行傳遞，其傳遞方向總是從發(fā)送信息的結(jié)點開始向兩端擴散，如同廣播電臺發(fā)射的信息一樣，因此又稱廣播式計算機網(wǎng)絡。各結(jié)點在接受信息時都進行地址檢查，看是否與自己的工作站地址相符，相符則接收網(wǎng)上的信息。
使用這種結(jié)構(gòu)必須解決的一個問題是確保端用戶使用媒體發(fā)送數(shù)據(jù)時不能出現(xiàn)沖突。在點到點鏈路配置時，這是相當簡單的。如果這條鏈路是半雙工操作，只需使用很簡單的機制便可保證兩個端用戶輪流工作。在一點到多點方式中，對線路的訪問依靠控制端的探詢來確定。然而，在LAN環(huán)境下，由于所有數(shù)據(jù)站都是平等的，不能采取上述機制。對此，研究了一種在總線共享型網(wǎng)絡使用的媒體訪問方法：帶有碰撞檢測的載波偵聽多路訪問，英文縮寫成CSMA/CD。
這種結(jié)構(gòu)具有費用低、數(shù)據(jù)端用戶入網(wǎng)靈活、站點或某個端用戶失效不影響其它站點或端用戶通信的優(yōu)點。缺點是一次僅能一個端用戶發(fā)送數(shù)據(jù)，其它端用戶必須等待到獲得發(fā)送權(quán)；媒體訪問獲取機制較復雜；維護難，分支結(jié)點故障查找難。盡管有上述一些缺點，但由于布線要求簡單，擴充容易，端用戶失效、增刪不影響全網(wǎng)工作，所以是LAN技術中使用***普遍的一種。
全球瘋狂最低價
Phoenix Controller IBS IP RFC/LK/ILB-T 2731364
Phoenix 2731377 Interbus Dataliner IBS IP DL
Phoenix DL 2 273137 Interbus Dataliner IBS IP
Phoenix Interbus Dataliner IBS IP DL 2 273137
PHOENIX IBS-IP-500-PS-2-BS USPP IBSIP500PS2BS
Phoenix IBS-IP-500-PS-2-BS Power Supply Unit 480V ! WOW !
PHOENIX IBS-ISA-SC/486DX/I-T NSFP IBSISASC486DXIT
PHOENIX IBS-ST-24-SSC-T USPP IBSST24SSCT
PHOENIX IBSISAFC/486DX/I-T BOARD W/ CO-PROC NIB
Phoenix Monitor Model DV-OPC5515 019-BD
Phoenix Monitor Model DV-OPC5515 019-BD
Phoenix Interbus Type IBS IP 500 ELR 2-6A DI8/4
PHOENIX 29 85 929 FL NP PND-4TX IB-LK NETWORK ROUTER PROXY NEW
PHOENIX PLOTTER CMS-P1 FINE WORKING CONDITION
Phoenix Contact, Interbus Controller 2719027, Brand New in Factory Packaging
PHOENIX DV-OPC5515 019-BD MONITOR 2875110 ***XLNT***
PHOENIX DV-OPC5515 016-BD/2877451 MONITOR ***XLNT***
PHOENIX FL-SWITCH-MCS-14TX/2FX USPP FLSWITCHMCS14TX2
PHOENIX IB-STME24DIO-8/8/3-2A-S NSFP IBSTME24DIO8832
Phoenix Interbus IBS CT 24 RB-LK/LK 2722810
Phoenix IBS Controller Board 2721659 NIB (5917)
IBST24INC/2 PHOENIX CONTACT
PHOENIX IBS-IP-I/O-GATEWAY USPP IBSIPIOGATEWAY
RFC 430 ETH-IB PHOENIX INTERBUS Free Ship
Phoenix Marking Plotter CMS-P1-PLOTTER
2725260 Phoenix IBS PCI SC/I-T master controller board
PHOENIX IBS-VME-AT/I USPP IBSVMEATI
PHOENIX IBS-VME-AT USPP IBSVMEAT
PHOENIX IBS-VME6H-SC/RI/I-T USPP IBSVME6HSCRIIT
PHOENIX CM175-PS-120AC/24DCU/10 NSFP CM175PS120AC24DC
PHOENIX IBS-IP-CBK-1/24-F-V3 USPP IBSIPCBK124FV3
PHOENIX VL BPC MINI INDUSTRIAL COMPUTER VALUELINE PC ATOM 1.10GHZ 3.8GB
Phoenix DV-OPC5515019-BC Touchscreen Computer
Phoenix FL Switch MCS 16TX 16 Port Managed Switch NIB FS
PHOENIX DV-OPC5515 MONITOR W/O BACK COVER ***XLNT***
NEW PHOENIX ISB IP RFC/LK/ILB-T INTERBUS REMOTE FIELD CONTROLLER 24VDC
PHOENIX IBS-PCISA-SC/I-T NSFP IBSPCISASCIT
PHOENIX IBS-IPCBK1/24-F USPP IBSIPCBK124F
PHOENIX IBS-IPCDI3/24-F USPP IBSIPCDI324F
PHOENIX IB-ST-24INC/2 USPP IBST24INC2
PHOENIX MCR-RAD-AC NSFP MCRRADAC
Phoenix DVG-OPC5315072-BC Touchscreen Computer
Phoenix DVG-OPC5315032-HW Touchscreen Computer
NEW PHOENIX 2832700 FL Switch MCS 16TX
PHOENIX IBSPCCBSWD NSFP IBSPCCBSWD
Phoenix IBS-IP-500-ELR-2-6A-DI8/4 Drive ! WOW !
PHOENIX 28 32 328 FL SWITCH M M HS ***XLNT***
PHOENIX IB-ST-120-DI-16/3 NSFP IBST120DI163
PHOENIX DVG-OPC5715001 TOUCHSCREEN COMPUTER
Phoenix MCS16TX FL Switch #18167
PHOENIX ILC200UNI-PAC NSFP ILC200UNIPAC
Phoenix IBS CT 24 BK RB-LK/LK IBSCT24BKRB-LK/LK
PHOENIX IB-ST-24-AI4/BP NSFP IBST24AI4BP
PHOENIX IBS-PCISA-SC/I-T USPP IBSPCISASCIT
Phoenix I/O Coupling IBS CT 24 IO GT-T 2719470
PHOENIX RAD-80211-XD USPP RAD80211XD
PHOENIX IBSIP500ELR2-6ADI8/4 REMOTE I/O STARTER
PHOENIX DRIVE IBS IP 500 ELR W-6A DI4/4
Phoenix 1206175 Din Rail Cutter
Phoenix FL SWITCH MCS16TX
PHOENIX IBSPLC5DSCIT *NNB*
PHOENIX 2730145 USPP 2730145
PHOENIX 2784104 USPP 2784104
Phoenix Power Supply CM175-PS-120AC/24DCU/10
PHOENIX ILC-200-IB NSFP ILC200IB
SIEMENS PHOENIX INTERBUS BUSTERMINAL IBS-STME-24-BK-RB-T IB-STME-24-DIO
PHOENIX IBSCT24IOGT-T NEW COUPLING MODULE
BALOGH / PHOENIX BS-45 REV B SERIAL INTERFACE UNIT
PHOENIX IBS-IP-24-V.24 NSPP IBSIP24V24
Phoenix IB-ST-24-INC/2 Interbus Module 24VDC ! WOW !
Phoenix Interbus IBS PCI SC/I-T PCI Master Controller Board 2725260
PHOENIX VAL-SQ-SP-80-120/208Y/FM NSFP VALSQSP80120208Y
PHOENIX IB-ST-24-AI4/BP USPP IBST24AI4BP
PHOENIX IBS-24BK-LC2 NSFP IBS24BKLC2
PHOENIX 2939276 USPP 2939276
PHOENIX IBS220BK USPP IBS220BK
PHOENIX POWER SUPPLY 2939072
PHOENIX POWER SUPPLY 2939069
Phoenix QUINT-PS-3*400-500AC/24DC/30 , 1 pcs , Power Supply , new
Phoenix Spread Spectrum Transmitter Loaded in Hoffman Box w/ Knobpot
PHOENIX INTERBUS-S INTERFACE CARD IBS PC CB/I-T *NEW*
PHOENIX IBS-TZF-24AI4/SF NSFP IBSTZF24AI4SF
Phoenix IBS S7 300-DSC-T IBSS7300DSCT
2938620 QUINT-PS-100-240AC/24DC/20 Phoenix Contact
Phoenix Contacts OTTA-25-M6 0790491 Terminal Block OTTA25M6 NEW Lot of 60
PHOENIX IBS-24DO/32 USPP IBS24DO32
Phoenix Quint PS-100-240AC/24DC/20 Power Supply
PHOENIX IB-ST-24-CNT NSFP IBST24CNT
Phoenix IBS S7 400 DSC/I-T INTERBUS Controller Board for SIMATIC S7-400
PHOENIX CMS-MARK-WIN USPP CMSMARKWIN
PHOENIX IBS-T2-4AO4/SF USPP IBST24AO4SF
PHOENIX QUINT-PS-3X400-500AC/24DC/30 POWER SUPPLY NEW IN BOX Quint
PHOENIX QUINT-PS-100-240AC/48DC/20 NSPP QUINTPS100240AC5
1 PHOENIX IBS24BKIOT MODULE (I6)
PHOENIX CP-215 DISPLAY TYPE CP 215 IB
Phoenix IB ST 24 BAO 8/U #2721044 - NEW
Phoenix Contacts MTKD-NICR/NI 3100062 Terminal Block NEW Lot Box of 50
Phoenix Contacts TT-UKK5-T-V-24DC-ST 2788391 Brand NEW in Box Lot of 50
PHOENIX IBS-24BK-LC2 NSPP IBS24BKLC2
PHOENIX IBS-IP-CDIO/R-24-8 USPP IBSIPCDIOR248
PHOENIX IBS-ST24BKDIO-8/8/3-T NSFP IBSST24BKDIO883T
PHOENIX IBS-24DO/LC NSPP IBS24DOLC
PHOENIX IBS24DOI NSFP IBS24DOI
PHOENIX 2730145 FIELD CONTROLLER WITH PROCESSOR *NEW*
PHOENIX 2939098 USPP 2939098
PHOENIX 2767972 USPP 2767972
IBST24DI32/2 PHOENIX NEW IN BOX!
PHOENIX ILC-200-UNI USPP ILC200UNI
PHOENIX IBS-AI USPP IBSAI
PHOENIX IBS RL 24 DI 16/8-LK DIGITAL INPUT / OUTPUT MODULE NEW
PHOENIX RAD-ISM-900-DATA-BD-BUS USPP RADISM900DATABDB
PHOENIX IBS-IP-CDIO/R-24-8/SF USPP IBSIPCDIOR248SF
PHOENIX IBS RT 24 DI 32 - T
PHOENIX PSI-MOS-PROFIB/FO-850-T NSFP PSIMOSPROFIBFO85
PHOENIX IBS-RT24-AIO4/2-T USPP IBSRT24AIO42T
PHOENIX QUINT-PS-100-240AC/48DC/20 USPP QUINTPS100240AC5
LOT of 3 Phoenix Surge Suppressors VAL-MS 120/3+1/FM-UD 2856692
PHOENIX IBS-24-BK-I/O USPP IBS24BKIO
PHOENIX FL-SWITCH-SF-4TX/3FX-ST NSFP FLSWITCHSF4TX3FX
PHOENIX IBS-24BK-LC2 USPP IBS24BKLC2
Phoenix Contacts OTTA-6-T 0711276 TERMINAL BLOCK NEW Lot of 50 OTTA6T
PHOENIX 2721947 USPP 2721947
PHOENIX IB-ST-24-CNT USPP IBST24CNT
PHOENIX IB-ST-24-DI-32/2-2MBD NSFP IBST24DI3222MBD
PHOENIX PSI-MOS-RS422/FO-850-T NSFP PSIMOSRS422FO850
PHOENIX IBS-ST-24-BK-LB-T NSFP IBSST24BKLBT
Phoenix QUINT-PS-100-240AC/24DC/20 Power Supply
Phoenix Contacts OTTA-6-T-P/P 0790462 NEW Lot of 45 OTTA6TPP Terminal Block
PHOENIX IB STME 24 AO 4/SF4 IBS RBC SWITCH NIB*
1 PHOENIX IBS24BKIOT MODULE (USED) (I6)
Phoenix Quint PS-3x400-500AC/48DC/20
PHOENIX LIGHTNING CURRENT ARRESTER 2818520 1.5kV PROTECTION
Phoenix Spread Spectrum Transceiver (ELE1458)
Phoenix Lot of 8 Part#-MCR-C-U/U-DC 2814469
Phoenix Balogh BS-46 Serial Control Board ! WOW !
PHOENIX 27 32 48 6 4 DIGITAL INPUT 24VDC 3MA 2 DIGITAL INPUT 24 VD NEW
Phoenix Interbus-S 278408 IBS AI 27 84 08 1 Analog Input Module
PHOENIX INTERBUS IBS IP 500 ELR W-6A D14/4
PHOENIX PSM-EG-RS232/RS422-P/4K NSFP PSMEGRS232RS422P
Phoenix OTTA 2.5-PE TERMINAL BLOCK OTTA2.5PE OTTA25PE 9MM NEW Lot of 50
PHOENIX IBS-MC-FLASH NSFP IBSMCFLASH
PHOENIX IBSCT24IOGT-T USPP IBSCT24IOGTT
PHOENIX PSM-EG-RS232/TTY-P/2K NSFP PSMEGRS232TTYP2K
PHOENIX IBS-ST24BKDIO-8/8/3-T USPP IBSST24BKDIO883T
PHOENIX IBS-S7300BC USPP IBSS7300BC
PHOENIX IB-STME-24-DIO-8/8/3-2A NSFP IBSTME24DIO8832A
PHOENIX PSM-EG-RS232/RS485-P/2D NSFP PSMEGRS232RS485P
PHOENIX IBS-24BK-I/O-T NSFP IBS24BKIOT
PHOENIX IB-ST-24-DI-32/2 NSFP IBST24DI322
PHOENIX IBS24DOI USPP IBS24DOI
Phoenix Imput Module IBST24AL 4/SF # 2754309
PHOENIX INTERBUS REMOTE FIELD CONTROLLER IBS IP RFC/LK/ILB-T
PHOENIX BOARD 2896 YB-706 5510223 REV. O USED 2896YB706
PHOENIX 2754309 IB ST 24 AI 4/SF
PHOENIX IB-ST-24-DO-32/2 USPP IBST24DO322
PHOENIX TRIO-PS/1AC/24DC/20 FNFP TRIOPS1AC24DC20
PHOENIX 2731597 INPUT MODULE 24V 0.12 A NEW
PHOENIX 27 31 58 4 16 DIGITAL INPUT 24VDC 3MA MODULE NEW
Phoenix QTCU-2.5 3206539 NEW Box of 50 QTCU2.5 QTCU25 Terminal Block
PHOENIX 5602015 NSFP 5602015
PHOENIX IBS24DO/LC USPP IBS24DOLC
PHOENIX PS-3X207AC/24VDC/30 USPP PS3X207AC24VDC30
PHOENIX IBS115DO USPP IBS115DO
PHOENIX ME341A NSPP ME341A
PHOENIX IBS-24DI NSFP IBS24DI
PHOENIX PSM-EG-RS232/TTY-P/2K NSPP PSMEGRS232TTYP2K
PHOENIX IBS-BA-AT/I USPP IBSBAATI
PHOENIX CONTACT/ FLKM D37,FLKM D37/S/LA SUB & TERMINALS
NEW Phoenix Term Block DIN Rail Assy 60Ea AC Surge TT-SLKK5/110AC E/NS35
Phoenix Contacts TT-UKK5-T-V-24DC-ST 2788391 Brand NEW in Box Lot of 37
PHOENIX RAD-ISM-900-RX USPP RADISM900RX
PHOENIX IB-STME-24-CNT USPP IBSTME24CNT
PHOENIX QUINT-PS-3X400-500AC/24DC/20 POWER SUPPLY 24V TESTED! QUANTITY!
Phoenix 29 42 49 6 Power Supply - New, No Box
PHOENIX QUINT-PS-3X400AC/24DC/20/F NSFP QUINTPS3X400AC24
PHOENIX IB-STME-24-AI4/SF4 USPP IBSTME24AI4SF4
PHOENIX IBS-STME-24-BK-DIO-8/8/3-T USPP IBSSTME24BKDIO88
Phoenix PSM-EG-RS232/FO-GST (NIB) RS232 to Fibe
PHOENIX #1201882 HAND CRIMPING TOOL ZA3
Phoenix Power Supply 100-240 VAC to 48 VDC 20 Amps
Part number QUINT-PS-100-240AC/48DC/20
PHOENIX 2722137
PHOENIX IBS-TME-24-DO-32/2 NSFP IBSTME24DO322
PHOENIX IBS-MC-FLASH-2MB NSFP IBSMCFLASH2MB
PHOENIX PSM-EG-RS232/RS422-P/4K USPP PSMEGRS232RS422P
PHOENIX FL-IL-24-BK-PAC NSFP FLIL24BKPAC
PHOENIX MCR-PSP-DC NSFP MCRPSPDC
Phoenix IBS S5 DSC/I-T INTERBUS Controller Board for SIMATIC S5 PLC
Phoenix Power Supply 2943709 CM90-PS-230AC/24DC
PHOENIX PSM-EG-RS232/TTY-P/2K USPP PSMEGRS232TTYP2K
PHOENIX IBS-IP-400-ME-ELR-1-3A-DI4 NSFP IBSIP400MEELR13A
Phoenix IBS-T24AI4/SF Input Module Analog - New, No Box
PHOENIX IBS-RL24DI16/8-T NSFP IBSRL24DI168T
PHOENIX IB-STME-24-DIO-8/8/3-2A USPP IBSTME24DIO8832A
PHOENIX PSM-EG-RS232/RS485-P/2D USPP PSMEGRS232RS485P
PHOENIX IBS-ST-24BK-RB-T USPP IBSST24BKRBT
PHOENIX QUINT-PS-3X400-500AC/24DC/20 USPP QUINTPS3X400500C
PHOENIX IB-ST-24-DI-32/2 USPP IBST24DI322
PHOENIX IBS-STME-24-BK-FT-T USPP IBSSTME24BKFTT
PHOENIX IBS-STME-24-MA-FT USPP IBSSTME24MAFT
phoenix rad-80211-xd 2885728 IP rs232 to wifi 802.11
NIB PHOENIX IB ST 24 AI 4/BP INPUT MODULE
Phoenix Interbus IBS STME 24 BK DIO 8/8/3-T
Phoenix IB-ST-24-CNT Interbus Module 24VDC ! WOW !
Phoenix IBS-ST-24-BK-DIO-8/8/3-T I/O Bus Module 24VDC ! WOW !
1853201 QTY 50 PHOENIX PLUGGABLE TERMINALBLOCK TMSTBP 2.5/ 5-STF-5.08 AU
HUGE PLC LOT TERMINAL BLOCK BREAKER A B ALLEN BRADLEY PHOENIX SIEMENS GE
Enlarge
PHOENIX CM175-PS-120AC/24DCU/10 UNREG PWR SPLY
NEW Phoenix Term Block DIN Rail Assy. 50Ea AC Surge TT-SLKK5/110AC E/NS3
PHOENIX QUINT-PS-3X207AC/24DC/20 NSFP QUINTPS3X207AC24
PHOENIX IBS CT 24 BK RB-LK/LK INTERBUS MODULE
Phoenix Contact, Ethernet Switch 2832933
PHOENIX CM125-PS-120-230AC NSFP CM125PS120230AC
PHOENIX FLIL24BKETH/IP-PAC NSPP FLIL24BKETHIPPAC
PHOENIX RS232/RS422 ISOLATOR 2761266
PHOENIX FL-MC-10/100-BASE-T/FO-G1300ST NSFP FLMC10100BASETFO
NEW PHOENIX 276126 PHOENIX INTERFACE MODULE PSM
NEW PHOENIX INTERBUS-S MODULE IBS 24 DI/32
PHOENIX QUINT-PS-1AC/24DC/20 NSFP QUINTPS1AC24DC20
PHOENIX Crimping Tool, Model - Crimpfox HC 25B
Phoenix Quint-PS-3X400-500AC/24DC/10 24VDC 10 Amps * Fully Tested*
PHOENIX IBS-24DI USPP IBS24DI
PHOENIX ELRW3/9-500 USPP ELRW39500
Phoenix 24vdc Power Supply Px-3x207AC/24dc/40/f
PHOENIX QUINT-PS-3X400AC/24DC/20/F USPP QUINTPS3X400AC24
PHOENIX 78-105-3300 USPP 781053300
Phoenix 2964173 ELR W3/9-400 Reversing Relay
Phoenix 2767192 InterBus-S IBS AI 3 Analog Input Module - NEW
PHOENIX QUINT-PS/1AC/48DC/10 USPP QUINTPS1AC48DC10
PHOENIX IBST24D08/3-2A NSFP IBST24D0832A
PHOENIX IBS-TME-24-DO-32/2 USPP IBSTME24DO322
PHOENIX MCR-PSP NSFP MCRPSP
Phoenix IBS IP SDC Art-No: 27 22 98 8 NEW
Phoenix 2752945, Interbus IBSTME24DIO/8/8/3-2A
Phoenix 2751616, IBSTME24CNT, 4 Counter, 24v
USED Phoenix QUINT-PS-100-240AC/24DC/20A Quint Power Supply
SEALED PHOENIX CH-NR/QUINT PS-120AC/24DC/5
Phoenix QUINT-PS/1AC/24DC/20 Power Supply NEW
Phoenix IB-ST-24-AI-4/BP Input Module 4-20MA ! WOW !
PHOENIX FLS DN M12 DIO 4/4 M12-2A MULTI-PORT BLOCK DEVICENET / PROF NEW
New Phoenix QUINT-PS-100-240AC/24DC/10A DC Power Supply Output 24VDC
PHOENIX IBS-SAB-24-DIO-8/4/4 NSFP IBSSAB24DIO844
PHOENIX 2878036 NSFP 2878036
PHOENIX QUINT-PS-3X400-500AC/24DC/20 POWER SUPPLY NEW IN BOX Quint
