描述
控制是指使系統(tǒng)的狀態(tài)與行為產(chǎn)生所希望的變化而加給系統(tǒng)的作用。如果表達(dá)這個(gè)作用及系統(tǒng)狀態(tài),用的是邏輯量,則這個(gè)控制即為邏輯量控制。它是最常用控制,對(duì)它進(jìn)行控制是PLC的優(yōu)勢(shì),也是PLC最基本的應(yīng)用。
邏輯量控制的目的是,根據(jù)邏輯量的當(dāng)前的輸入組合與歷史的輸入順序,使PLC產(chǎn)生相應(yīng)的邏輯量輸出,以使系統(tǒng)能按一定順序工作,所以,有時(shí)也稱(chēng)其為順序控制。
PLC對(duì)系統(tǒng)的順序控制有手動(dòng),半自動(dòng)或自動(dòng)。而采用的控制原則有分散、集中與混合三種。PLC的邏輯問(wèn)題有位邏輯和字邏輯,這些問(wèn)題又各有組合邏輯與時(shí)序邏輯兩個(gè)類(lèi)型。
另外,如果把PLC梯形圖理解為電路,若按輸入的確定性分,則有確定電路與隨機(jī)電路兩種。確定電路的工作順序是確定的。而隨機(jī)電路的工作順序是有分支的,根據(jù)不同的輸入,沿著不同的分支工作。
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主營(yíng):世界知名品牌的PLC、DCS系統(tǒng)備件模塊
①Allen-Bradley(美國(guó)AB)系列產(chǎn)品》
②Schneider(施耐德電氣)系列產(chǎn)品》
③General electric(通用電氣)系列產(chǎn)品》
④Westinghouse(美國(guó)西屋)系列產(chǎn)品》
⑤SIEMENS(西門(mén)子系列產(chǎn)品)》
⑥銷(xiāo)售ABB Robots.FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、PanasonicRobots、MOTOMAN Robots。
⑦estinghouse(西屋):OVATION系統(tǒng)、WDPF系統(tǒng)、MAX1000系統(tǒng)備件。
⑧Invensys Foxboro(??怂共_):I/A Series系統(tǒng),F(xiàn)BM(現(xiàn)場(chǎng)輸入/輸出模塊)
順序控制、梯形邏輯控制、事故追憶處理、數(shù)模轉(zhuǎn)換、輸入/輸出信號(hào)處理、數(shù)
據(jù)通信及處理等。Invensys Triconex:冗余容錯(cuò)控制系統(tǒng)、基于三重模件冗余(TMR)
結(jié)構(gòu)的zui現(xiàn)代化的容錯(cuò)控制器。
⑨Siemens(西門(mén)子):Siemens MOORE,Siemens Simatic C1,Siemens數(shù)控系統(tǒng)等。
⑩Bosch Rexroth(博世力士樂(lè)):Indramat,I/O模塊,PLC控制器,驅(qū)動(dòng)模塊等。
◆Motorola(摩托羅拉):MVME 162、MVME 167、MVME1772、MVME177等系列。
REXROTH INDRAMAT CLC-D02.3-FW MODULE INPUT CARD
REXROTH INDRAMAT CLC-D02.3M-FW CONTROL CARD W/FIBER OPTIC
REXROTH INDRAMAT CLC-V02.3C-FW SERVO CONTROL VMEBUS CLC W/40 AXIS GPS FIRMWARE
REXROTH INDRAMAT CLM-01.2 CONTROL MODULE
REXROTH INDRAMAT CLM01.2-A CONTROL MODULE 2 AXIS MOK II
REXROTH INDRAMAT CLM01.2-A-E 2 AXIS CONTROLLER
REXROTH INDRAMAT CLM012E AXIS CONTROL
REXROTH INDRAMAT CLM01.3-X-0-2-0 CONTROLLER
REXROTH INDRAMAT CLM01.3-X-0-2-0-FW SERVO CONTROLLER
REXROTH INDRAMAT 266805 SERVO CONTROL
REXROTH INDRAMAT 267341 PC BOARD
REXROTH INDRAMAT 268887 CONTROL
REXROTH INDRAMAT 268889 CONTROL
REXROTH INDRAMAT 271426 ELEC COMPONENT
REXROTH INDRAMAT 271639 ENCODER
REXROTH INDRAMAT 276889 CONNECTOR
REXROTH INDRAMAT 276890 CONNECTOR
REXROTH INDRAMAT 277697 CABLE
REXROTH INDRAMAT 278760 FIRMWARE MOD
REXROTH INDRAMAT 278984 CABLE
REXROTH INDRAMAT 284830 SERVO MOTOR
REXROTH INDRAMAT 285402 CARD DISPLAY
REXROTH INDRAMAT 2AD160B-B35OB2-BS03-C2N1 MOTOR 460VAC 30KW 1.5-6K RPM
REXROTH INDRAMAT 2AD160CB350B1BS0 SERVO
REXROTH INDRAMAT 2G-1125-1R-B3-3302-H2 SERVO MOTOR
REXROTH INDRAMAT 308241 FIB OPTIC MOD
REXROTH INDRAMAT 308248 FIB OPTIC MOD
REXROTH INDRAMAT 31220901 ENCODER
REXROTH INDRAMAT 610085 CONNECTOR KIT/CABLE
REXROTH INDRAMAT 610110 CONNECTOR KIT/CABLE
REXROTH INDRAMAT 610121 CONNECTOR KIT/CABLE
REXROTH INDRAMAT 610123 CONNECTOR KIT/CABLE
REXROTH INDRAMAT A2D300AD0201 FAN ASSEMBLY 230/400V 280/270W 2650/2800RPM
REXROTH INDRAMAT AC-SERVO Item
REXROTH INDRAMAT APRB-02-02 INTERFACE SERCOS
REXROTH INDRAMAT APRB02-02-FW AXIS PROCESSOR MODULE
REXROTH INDRAMAT AS161/006-000 PROGRAMMING MODULE
REXROTH INDRAMAT BGRNTB02-00 PRINTED CIRCUIT CARD FOR MT-CNC02/03
REXROTH INDRAMAT BSM150GB120DN11 BLOCK
REXROTH INDRAMAT BTM03.1-BA-TA-TA-TA-TA-VA-2FF-FW OPERATOR INTERFACE/PUSHBUTTON STATION
REXROTH INDRAMAT BTM1.01/00 CONTROL PANEL WITH EMERGENCY STOP
REXROTH INDRAMAT BZM01.1-07 SERVO CONTROLLER ECODRIVE AC
REXROTH INDRAMAT BZM01.3-01-07 SERVO CONTROL
REXROTH INDRAMAT CCD01.1-KE00-01 RACK 4 SLOT
REXROTH INDRAMAT CCD01.1-KE02-01-FW MOTION CONTROLLER W/PLUG-IN FRAME WO/FIRMWARE
REXROTH INDRAMAT CCD01.1KE19-01FW SERVO DRIVE
REXROTH INDRAMAT CCD01.1-KE20-01-FW SERVO CONTROLLER
REXROTH INDRAMAT CLC-D02.2 PC BOARD
REXROTH INDRAMAT CLC-D02.2A-FW CARD SERIAL COMMUNICATION
REXROTH INDRAMAT CLC-D02.3 MODULE INPUT CARD
REXROTH INDRAMAT CLC-D02.3-FW MODULE INPUT CARD
REXROTH INDRAMAT CLC-D02.3M-FW CONTROL CARD W/FIBER OPTIC
REXROTH INDRAMAT CLC-V02.3C-FW SERVO CONTROL VMEBUS CLC W/40 AXIS GPS FIRMWARE
REXROTH INDRAMAT CLM-01.2 CONTROL MODULE
REXROTH INDRAMAT CLM01.2-A CONTROL MODULE 2 AXIS MOK II
REXROTH INDRAMAT CLM01.2-A-E 2 AXIS CONTROLLER
REXROTH INDRAMAT CLM012E AXIS CONTROL
REXROTH INDRAMAT CLM01.3-X-0-2-0 CONTROLLER
REXROTH INDRAMAT CLM01.3-X-0-2-0-FW SERVO CONTROLLER
REXROTH INDRAMAT DDS03.1-W/030-R SERVO DRIVE AC 30AMP RESOLVER FEEDBACK
REXROTH INDRAMAT DDS031W050D AC SERVO DRIVE
REXROTH INDRAMAT DDS2.1-A150-D SERVO CONTROLLER
REXROTH INDRAMAT DDS21A200D MODULE
REXROTH INDRAMAT DDS2.1-W/025-D SERVO CONTROL AC
REXROTH INDRAMAT DDS2.1-W/050-D SERVO CONTROL AC W/DDS-1 SERCOS ETHERNET IN SLOT1
REXROTH INDRAMAT DDS2.1-W/100-D SERVO DRIVE CONTROLLER AMPLIFIER
REXROTH INDRAMAT DDS2.1-W/150-D SERVO CONTROLLER AC
REXROTH INDRAMAT DDS2.1-W/200-D SERVO DRIVE 200AMP
REXROTH INDRAMAT DDS22W100BE1200 DRIVE
REXROTH INDRAMAT DDS3.1-W/030-D SERVO CONTROLLER
REXROTH INDRAMAT DDS3.1-W/030-R SERVO DRIVE AC 30AMP RESOLVER FEEDBACK
REXROTH INDRAMAT DEA04.1 I/O MODULE/INTERFACE FOR PLC 15INPUT 16OUTPUT
REXROTH INDRAMAT DEA04.2 PLUG IN I/O CARD
REXROTH INDRAMAT DEA28.1 I/O MODULE ISOLATED 32IN 24O