Bailey DCS卡件 CONTROLS INICT01 INFI 90 INFI-NET TO COMPUTER TRANSFER MODULE
Bailey DCS卡件 CONTROLS INICT01 INFI 90 INFI-NET TO COMPUTER TRANSFER MODULE
Bailey DCS卡件 CONTROLS INICT01 INFI 90 INFI-NET TO COMPUTER TRANSFER MODULE
對于市場上廣泛使用的A-B公司PLC產(chǎn)品,F(xiàn)oxboro公司專門開發(fā)的通訊硬件--集成在I/A’s中的AB-STATION,通過AB-STATION,在I/A’s中可以直接對A-B的PLC進行管理、組態(tài)、通訊及數(shù)據(jù)采集監(jiān)視,使整個系統(tǒng)既具有PLC快速的優(yōu)點,又具有DCS系統(tǒng)友好的人機界面,強大的數(shù)據(jù)庫管理的優(yōu)勢。
對于工業(yè)界廣泛采用的MODBUS協(xié)議(含ASCII協(xié)議及RTU協(xié)議),F(xiàn)oxboro公司開發(fā)了多種符合MODBUS協(xié)議的硬件,主要有:MODBUSGATEWAY,MODBUSGATEWAYPLUS,適用于RS-232通訊及RS-485通訊,并可以選擇做為仆方或主方。采用專門的通訊硬件,可以與一切提供MODBUS協(xié)議通訊接口的設備進行通訊,包括其它公司的DCS系統(tǒng)、PLC產(chǎn)品等。在上海Foxboro公司所實施的大部分需要進行通訊的項目中均采用這種方式。
除以上兩種專門通訊硬件外,F(xiàn)oxboro公司還有一個可以自定義協(xié)議的通訊硬件—FOREIGNDEVICEINTIGRATOR30(設備集成器30)。使用此通訊硬件,需要通訊的雙方只要定義好通訊數(shù)據(jù)包格式(包括數(shù)據(jù)包報頭信息、數(shù)據(jù)格式、數(shù)據(jù)包報尾信息)和通訊參數(shù)(包括起始位、停止位、數(shù)據(jù)位、波特率)即可實現(xiàn)通訊。在鎮(zhèn)江電廠項目中,上海Foxboro公司就采用這個方法實現(xiàn)了與GEPLC及無錫陽山智能數(shù)據(jù)采集前端的通訊,大大減少了用戶的投資。
此外,對于市場上使用較多的PLC和DCS產(chǎn)品,F(xiàn)oxboro公司提供專門的通訊軟件進行通訊。
以上所有的通訊方式所采用的硬件是一樣的:通訊處理機30(COMMUNICATIONPROCESSOR30),不同之處在于所選用的通訊軟件不一樣。
對于MODBUS協(xié)議,采用的波特率通常為9600bps,因此每秒所能通訊的數(shù)據(jù)包是有限制的。
對于MODBUS協(xié)議,如果MODBUS設備不同,每個通訊包所能通訊的量是不一樣的,通常使用的548設備可以通訊到256個字節(jié),亦即128個模擬量或2048個數(shù)字量。
標準的MODBUS通訊幀格式為:“〈仆方地址〉〈功能碼〉〈起始地址〉〈數(shù)據(jù)傳送量〉〈校驗碼〉”。對于不同的設備具有不同的MODBUS地址;同一設備,不同數(shù)據(jù)類型(外部寄存器、內(nèi)部寄存器、外部保持線圈、內(nèi)部保持線圈等)具有不同的功能碼;同一數(shù)據(jù)類型,讀/寫操作不同時,也具有不同的功能碼。
因此,在考慮MODBUS協(xié)議通訊時,不能只看有多少個模擬量/數(shù)字量,而必須同時考慮:有多少個設備,每個設備的通訊模擬量/數(shù)字量數(shù)據(jù)有多少,數(shù)據(jù)是否雙向傳送,通訊速率為多少。綜合考慮以上因數(shù)后,計算出需要多少個通訊處理器。
需要強調(diào)的是:Foxboro公司的硬件通訊產(chǎn)品COMM30與許多公司的硬件通訊方式通過采用插在工程師站/操作員站主板上的串口通訊卡實現(xiàn)不同,F(xiàn)oxboro公司的COMM30具有的CPU芯片,獨立于工程師站及操作員站運行,是控制網(wǎng)絡中一個獨立的處理站,即使在工程師站/操作員站死機時仍能保證通訊的正常運行,這在參與控制的通訊(如與定排程控、吹灰程控等)中顯的尤為重要。
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UN FOXBORO IGP20-A46C21C-M1 TRANSMITTER 12.5-42VDC SUPPLY
Sealed Foxboro CM400YQ Contact Dc Expansion I/O
Potter & Brumfield Relay Type A L100BW KR-4015-3 Foxboro
PHOENIX CONTACT P0926DZ FOXBORO POWER CONNECTION KIT FOR FPS 400-24 D318652
P50A-PAD9SS12M Foxboro Actuator
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Old stock Honeywell Recorder repair parts 30678080-503 & 30735068-001 A04
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OLD FOXBORO 58P4WC PROPORTIONAL BAND CONTROLLER DA
NO BOX FOXBORO TRANSMITTER IAP10-A20C1F-M1V2
NO BOX FOXBORO P0914WH 0J FBM207B CHANNEL ISOLATED 16 INPUT 24VDC (327)
NO BOX FOXBORO MODEL 136 COMPUTING RELAY 136-5-3 20-22 (170)
Marsh Foxboro 3-1/2" Dial Face Pressure Gauge 0 - 30 psi J8842
Marsh Foxboro 3-1/2 Dial Face Pressure Gauge 5 to 15 PSI 25 max psi PO 120yv
LOT OF 4 FOXBORO FIBER TIP CHART RECORDER PEN C0149PV
LISTING Wilks/Foxboro Miran 103 Specific Vapor Analyzer Portable Infrared Detector PARTS
LISTING PBM TRANSMITTER ISOLATION VALVE W/ FOXBORO TRANSMITTER IDP10-DF1C01F
LISTING FOXBORO TRANSMITTER IGP20-A22C01F
LISTING Foxboro Temperature Transmitter E94 0-100C with platinum temperature sensor
LISTING FOXBORO PRESSURE TRANSMITTER DC CURRENT 1235-13G-K54B1 VOLTS RANGE MILITARY
LISTING FOXBORO P0400YD FBM03 Module BUS INPUT MODULE
LISTING Foxboro 1RL8E, N0811RL8E, ML2F8OP-22 PCB circuit board
LISTING Foxboro Invensys 871PH-1X1A pH/ORP Sensor NIB
LISTING Foxboro I/A Series RTT20 Temperature Transmitter H19 (1871)
LISTING FOXBORO FOLDING CHART PAPER *PACK OF 3* SURPLUS IN ORIGINAL SEALED PACKAGE
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LISTING FOXBORO 841GM-BI1 PRESSURE TRANSMITTER *FACTORY SEALED*
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LISTING 3/4" 150# Foxboro CFS10-08SCFBB-M I/A Series Mass Flowtube SS P14 (1486)
INVENSYS FOXBORO FBM03A I/A SERIES INPUT INTERFACE MODULE D366207
INVENSYS FOXBORO EVO 2014 RESTORE MEDIA FOR MODEL H92 STYLE G (HP Z420)
Invensys Foxboro D0135ND Electric Level Sensor ORIGIN 2A8716 C0-NI G/M
INVENSYS FOXBORO 0-125PSI PRESSURE TRANSMITTER IGP10-A33D1C
In Factory Box Foxboro Voltage Current Converter Board 2AI - T2V
In Box/Sealed Foxboro P0400YE 0-20 MA Input/Output Module
In Box/Sealed Foxboro P0400DA 0-20 MA Input
In Box/Sealed Foxboro I/A Series CM400YH Contact DC Input
IN BOX WIKA 232.34 6" FOXBORO RECEIVER GAUGE 0100 0-10 PSI 316 SS (204)
in box FOXBORO SUMMER 2AX+SUM STD 2AXSUM
IN BOX FOXBORO RELAY REPLACEMENT KIT C0136HZ (244-1)
IN BOX FOXBORO PRESSURE TRANSMITTER IDP10-I20B21F-M1
IN BOX FOXBORO POWER SUPPLY 710D3911100
IN BOX FOXBORO PLC CM400YJ-0A FBM8 I/OMODULE I/A SERIES CM400YJ 0A (238)
In Box Foxboro P0800DC P10 Isolator Cable
IN BOX FOXBORO P0400VE REV F FIELDBUS ISOLATOR MODULE PLC I/A SERIES (238)
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IN BOX FOXBORO E6F-T12-S CURRENT TO AIR CONVERTER (281)
IN BOX FOXBORO COMPUTER 556-8-62 ST C 9301369 FUNCTION MULTIPLIER (148)
IN BOX FOXBORO BELLOWS LINK ASSEMBLY U0101CP (108-1)
IN BOX FOXBORO B0123HD PRESSURE REGULATOR 150PSI INPUT 20PSI OUTPUT
IN BOX FOXBORO 823DP-13K1NH2 ELECTRONIC TRANSMITTER
IN BOX FOXBORO 821GM-IS1MM2-CM ELECTRONIC GAUGE PRESSURE TRANSMITTER
IN BOX FOXBORO 821GM-IK1NM1-A ELECTRONIC TRANSMITTER
in box FOXBORO 2AX-SSL 2AXSSL N0301KN J
IN BOX FOXBORO 2AX-MUL 2AXMUL C0153FB REV. C
in box FOXBORO 2AX-ALM-AR STB 2AXALMAR ABS ALARM
GRAPHIC CONTROLS RECORDING CHARTS TO FIT FOXBORO 798402 100 CHARTS
GRAPHIC CONTROLS CHART RECORDING PAPER TO FIT FOXBORO 898415 99 CHARTS
GRAPHIC CONTROLS CHART RECORDING PAPER TO FIT FOXBORO 898415 100 CHARTS
GRAPHIC CONTROLS CHART RECORDING PAPER TO FIT FOXBORO 898145 98 CHARTS