BOSCH 062064-202401現(xiàn)貨
公司是一家以工業(yè)自動化為主營,融科、工、貿(mào)于一體,專業(yè)從事自動化控制系統(tǒng)PLC及智能配電系統(tǒng) DCS備件銷售,生產(chǎn)各種規(guī)格配電柜、控制柜、雙電源自動切換柜等服務和代理銷售各類進口電氣及自動化產(chǎn)品的民營高新技術企業(yè)。常規(guī)備件現(xiàn)貨倉庫,大大縮短了交貨周期,為客戶節(jié)省了時間與成本。公司以“高效,誠 信雙贏”為宗旨,與國內(nèi)外眾多廠商建立了良好合作關系,我們真誠的希望能與各貴司開展多方合作。
(1) 功能塊FC實參的指針存到調(diào)用塊的L堆棧;
(2) 調(diào)用塊的地址和返回位置存儲在塊堆棧,調(diào)用塊的局部數(shù)據(jù)壓入L堆棧;
(3) 功能塊存儲臨時變量的L堆棧區(qū)被推入L堆棧上部;
(4) 當被調(diào)用功能塊FC結束時,先前塊的信息存儲在塊堆棧中,臨時變量彈出L堆棧。
因為功能塊FC不用背景數(shù)據(jù)塊,不能分配初始數(shù)值給功能塊FC的局部數(shù)據(jù),所以必須給功能塊FC提供實參。
STEP 7為功能塊FC提供了一個特殊的返回值輸出參數(shù)(關鍵字:RET_VAL)。當在文本文件中創(chuàng)建功能塊FC時,你可以在定義功能塊FC命令后輸入數(shù)據(jù)類型(如BOOL或INT)。對文本文件進行編譯時,STEP 7會自動生成RET_VAL輸出參數(shù)。當用STEP 7的程序編輯器(Program Editor)以增量模式創(chuàng)建功能塊FC時,可在FC的變量聲明表中聲明一個輸出參數(shù)RET_VAL,并指明其數(shù)據(jù)類型。
功能塊編程與調(diào)用舉例
對功能塊編程分兩步進行:步是定義局部變量(填寫局部變量表);第二步是編寫要執(zhí)行的程序,可以用梯形圖或語句表兩種形式編程,并在編程過程中使用定義了的局部變量(數(shù)據(jù))。
定義局部變量的工作內(nèi)容包括:
(1) 分別定義形參、靜態(tài)變量和臨時變量(FC塊中不包括靜態(tài)變量);
(2) 確定各變量的聲明類型(Decl.)、變量名(Name)和數(shù)據(jù)類型(Data Type),還要為變量設置初始值(Initial Value)(盡管對有些變量初始值不一定有意義)。如果需要還可為變量注釋(Comment)。在增量編程模式下,STEP 7將自動產(chǎn)生局部變量地址(Address)。
寫功能塊程序時,可以用以下兩種方式使用局部變量:
(1) 使用變量名,此時變量名前加前綴“#”,以區(qū)別于在符號表中定義的符號地址。增量方式下,前綴會自動產(chǎn)生。
(2) 直接使用局部變量的地址,這種方式只對背景數(shù)據(jù)塊和L堆棧有效。
在調(diào)用FB塊時,要說明其背景數(shù)據(jù)塊。背景數(shù)據(jù)塊應在調(diào)用前生成,其順序格式與變量聲明表必須保持一致。在增量方式下,調(diào)用FB塊時,STEP 7會自動提醒并生成背景數(shù)據(jù)塊。此時也為背景數(shù)據(jù)塊設置了初始值,該初始值與變量聲明表中的相同。當然也可以為背景數(shù)據(jù)塊設置當前值(Current Value),即存儲在CPU中的數(shù)值。
1.二分頻器
假設功能塊FC10是二分頻器產(chǎn)生程序,功能是對不同的輸入位進行二分頻處理。以下給出了FC10的變量聲明表和語句表程序。在程序中使用了跳變沿檢測指令。
1) FC10的變量聲明表(見表5.3)
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ADEPT TECH EXC31A331A01AD?-04 USPP EXC31A331A01AD?04
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ADEPT TECH 10320-33018 USPP 1032033018
ADEPT TECH 100 USPP 100
ADEPT TECH 10330-15200 USPP 1033015200
ADEPT TECH 10300-11110 USPP 1030011110
ADEPT TECH DIO NSFP DIO
ADEPT TECH 10310-58020 NSFP 1031058020
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ADEPT TECH 10841-00500 NSFP 1084100500
ADEPT TECH 90310-48000 NSFP 9031048000
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BOSCH 062064-202401
RVSI ACUITY CIMATRIX HE1515HD NSFP HE1515HD
Acuity Vision AS-MS20-301 IVS Cimatrix camera sensor
NEW COMPLETE RVSI ACUITY AS-MS40-301 MS40 CAMERA SYSTEM BW-MS40-301
ACUITY IMAGING AR4000 NSPP AR4000
Ophthalmic Optometric Computerized Visual Acuity Software - Excellent Value
ACUITY IMAGING MX712 USPP MX712
RVSI ACUITY CIMATRIX 7655 USPP 7655
RVSI ACUITY CIMATRIX HE1515HD USPP HE1515HD
ACUITY IMAGING MS40 USPP MS40
ACUITY IMAGING MS/10 USPP MS10
ACUITY IMAGING AS-8160-003 USPP AS8160003
MCT-600A LCD Acuity Chart System/ Projectro / Brand New
RVSI ACUITY CIMATRIX AS-M502-000 USPP ASM502000
Acuity Brands Controls SPAK 8S 120/277 Lighting Panel
ACUITY IMAGING ASMS20301 USPP ASMS20301
ACUITY IMAGING AS-MS40-314 USPP ASMS40314
ACUITY IMAGING AS8160000 USPP AS8160000
ACUITY IMAGING MS/20 USPP MS20
RVSI ACUITY CIMATRIX AS-P300B-200 USPP ASP300B200
RVSI ACUITY CIMATRIX MX-600 USPP MX600
I.D. Matrix Symbology Reader with Acuity SR-20 Module
ACUITY IMAGING XI36391 NSPP XI36391
RVSI ACUITY CIMATRIX DMR600 USPP DMR600
RVSI ACUITY IVS EXPRESS 85-264VAC 3.15A 47-63HZ
RVSI ACUITY CIMATRIX SR-20 USPP SR20
ACUITY IMAGING CA-XCHM-025 NSPP CAXCHM025
MENTOR GUYTON MINKOWSKI POTENTIAL ACUITY METER*
RVSI ACUITY CIMATRIX AS-P200-432 USPP ASP200432
Visual Acuity Software w/Remote Optometry Ophthalmology
INCLUDES FREE Tech Support, Slide Show Software, more
PROPAQ ENCORE 202 EL PATIENT VITAL MONITOR WITH PRINTER & NETWORK ACUITY MODEM
Acuity Imaging AS-CLRS-017 Fiber Optic Camera Assembly
RVSI ACUITY CIMATRIX 010901900 NSFP 010901900
RVSI ACUITY CIMATRIX 002-CM4000 USPP 002CM4000
BOSCH 062064-202401
APW MCLEAN XR-2016-101 NSFP XR2016101
APW MCLEAN 28-238120J NSPP 28238120J
APW MCLEAN TFP102 NSPP TFP102
APW MCLEAN SF-0926-002 NSFP SF0926002
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NEW APW MAYVILLE CHAS36 CHASSIS SUPPORT ANGLE
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APW MCLEAN TEP4UL12 NSFP TEP4UL12
APW MCLEAN SF-0516-002 NSFP SF0516002
MCLEAN E2802 MOTOR TYPE: U83B1 APW MODEL: 2NB424S50P3 BLOWER ASSEMBLY 52-6025-10
APW MCLEAN TEP4UL12 NSPP TEP4UL12
APW Mayville Products Keyboard Shelf KS19S 19" Retractable Swivel Standard New
APW MCLEAN T6S3R NSFP T6S3R
APW / McLean XR29-0816-012H Electronic Heat Exchanger, USED, WARRANTY
APW International AP4-383 O2 Oxygen Sensor New Upstream
APW MCLEAN 30-4019-01M 115 VOLT 1/17 HP FAN ASSEMBLY, NEW
APW MCLEAN 28-1064-01M 115 VOLT 1/17 HP FAN ASSEMBLY, NEW
APW MCLEAN SF-0516-002 USPP SF0516002
APW MCLEAN X-RA76TH NSFP XRA76TH
APW MCLEAN T6S3R USPP T6S3R
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MCLEAN E42359 MOTOR TYPE U83B1 APW MODEL 2NB424S56P3 BLOWER ASSEMBLY 29-4121-10
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ALLEN BRADLEY 802T-APW2 NSFP 802TAPW2
APW MCLEAN EG-0900-001 NSFP EG0900001
apw C-1660-6 FAN TRAY
APW MCLEAN F48HXBYJ-1198 NSPP F48HXBYJ1198
APW MAYVILLE SS1924 19-INCH MEDIUM DUTY VENTED ROLLOUT EQUIPMENT SHELF NEW
APW MCLEAN TEP4 NSFP TEP4
Palo Alto Audio Design SA410APW cubik 2.0 Speaker System - USB - Black
APW International AP4-374 O2 Oxygen Sensor New Upstream
APW International GM8105 Axle Shaft New Left
APW MCLEAN TEP10 NSPP TEP10
APW MCLEAN PPV32B NSFP PPV32B
APW MCLEAN SG-0900-002 NSFP SG0900002
APW MCLEAN EG-1000-002 NSFP EG1000002
APW MCLEAN TEP10 USPP TEP10
APW MCLEAN SG-0500-002 NSFP SG0500002
APW International GM8102A Axle Shaft New Left
APW International GM8002 Axle Shaft New Left
APW MCLEAN TEP6 NSPP TEP6
BOSCH 062064-202401