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170ADO35000鏜頭架
PLC具有通信聯(lián)網(wǎng)的功能，它使PLC與PLC之間、PLC與上位計(jì)算機(jī)以及其他智能設(shè)備之間能夠交換信息，形成一個(gè)統(tǒng)一的整體，實(shí)現(xiàn)分散集中控制。現(xiàn)在幾乎所有的PLC新產(chǎn)品都有通信聯(lián)網(wǎng)功能，它和計(jì)算機(jī)一樣具有RS-232接口，通過(guò)雙絞線、同軸電纜或光纜，可以在幾公里甚至幾十公里的范圍內(nèi)交換信息。


PLC之間的通訊網(wǎng)絡(luò)是各廠家專(zhuān)用的，PLC與計(jì)算機(jī)之間的通訊，一些生產(chǎn)廠家采用工業(yè)標(biāo)準(zhǔn)總線，并向標(biāo)準(zhǔn)通訊協(xié)議靠攏，這將使不同機(jī)型的PLC之間、PLC與計(jì)算機(jī)之間可以方便地進(jìn)行通訊與聯(lián)網(wǎng)。


了解了PLC的基本結(jié)構(gòu)，我們?cè)谫?gòu)買(mǎi)程控器時(shí)就有了一個(gè)基本配置的概念，做到既經(jīng)濟(jì)又合理，盡可能發(fā)揮PLC所提供的佳功能。


基本指令系統(tǒng)特點(diǎn)


PLC的編程語(yǔ)言與一般計(jì)算機(jī)語(yǔ)言相比，具有明顯的特點(diǎn)，它既不同于語(yǔ)言，也不同與一般的匯編語(yǔ)言，它既要滿足易于編寫(xiě)，又要滿足易于調(diào)試的要求。目前，還沒(méi)有一種對(duì)各廠家產(chǎn)品都能兼容的編程語(yǔ)言。如三菱公司的產(chǎn)品有它自己的編程語(yǔ)言，OMRON公司的產(chǎn)品也有它自己的語(yǔ)言。但不管什么型號(hào)的PLC，其編程語(yǔ)言都具有以下特點(diǎn)：

5PCS SST29EE010-90-4C-NH Encapsulation:PLCC,1 Mbit 128K x8 Page-Mode EEPROM
5PCS SST29EE010-90-4C-PH Encapsulation:DIP,
5PCS SST39SF020A-70-4C-NH Encapsulation:PLCC-32,1 Mbit / 2 Mbit / 4 Mbit (x8)
5PCS SST39SF040-70-4C-NH Encapsulation:PLCC-32,1 Mbit / 2 Mbit / 4 Mbit (x8)
5PCS SST49LF004A-33-4C-NHE 49LF004A 4 Mbit Firmware Hub PLCC32
5PCS SST89V564RD-33-C-NJ Encapsulation:PLCC,FlashFlex MCU
5PCS SST89V564RD-33-C-NJ Encapsulation:PLCC,FlashFlex MCU
5pcs x           25VF032B-50-4C SST25VF032B 25VF032B SOP8 IC
5pcs x           25VF032B-66-4I SST25VF032B 25VF032B SOP8 IC
5pcs x           25VF032B-80-4I SST25VF032B 25VF032B SOP8 IC
5PCS X SST39LF020-45-4C-B3KE IC FLASH 2MBIT 45NS 48TFBGA
5Pks Dental OCMEGA K-FILE Hand Use Endo Root Canal SSt Files Endo 45-80# 25mm AS
5x           SST 25VF016B SOP8 8pin BIOS chipset *ship from US*
5x           SST 39SF020A PLCC 32pin BIOS chipset 39SF 020A
6 Pcs Dental Dentsply Maillefer Gates Endo Glidden Files Drills Burs #1 SST 32MM
6 Pcs Dental Dentsply Maillefer Gates Endo Glidden Files Drills Burs #4 SST 32MM
6 Pcs Dental Dentsply Maillefer Largo Endo Glidden Files Drills Burs #1 SST 32MM
6 Pcs Dental Dentsply Maillefer Largo Endo Glidden Files Drills Burs #2 SST 32MM
6 Pcs Dental Dentsply Maillefer Largo Endo Glidden Files Drills Burs #3 SST 32MM
6 Pcs Dental Dentsply Maillefer Largo Endo Glidden Files Drills Burs #4 SST 32MM
6 Pcs Dental Dentsply Maillefer Largo Endo Glidden Files Drills Burs #5 SST 32MM
6 Pcs Dental Dentsply Maillefer Largo Endo Glidden Files Drills Burs #6 SST 32MM
6" 150lb Tensile Strength 316 Stainless Steel Cable Ties 100/bag FAST SHIPPING!
6004-2RS SST           Single Row Ball Bearing 6004RS
6004ZZ           SST Single Row Ball Bearing
6006-2RSNR / 60062RSNR SST Ball Bearing - NOS
6006-2RSNR SST           Single Row Ball Bearing
6006Z SST           Single Row Ball Bearing
6007-2RS SST           Single Row Ball Bearing
6007-2RSC3 SST           Single Row Ball Bearing
6009-2RSC3 SST           Single Row Ball Bearing
6012-2RS SST           Single Row Ball Bearing
6207-2RS SST           Single Row Ball Bearing
6208C3 SST           Taper
6209Z SST           Single Row Ball Bearing
6305AC3 SST           Single Row Ball Bearing
6305RS SST           Single Row Ball Bearing
6306-2RS SST           Single Row Ball Bearing
6306Z SST           Single Row Ball Bearing
6307-2RS SST           Single Row Ball Bearing
6307Z SST           Single Row Ball Bearing
6307ZC3 SST           Single Row Ball Bearing
6309-2RS SST           Single Row Ball Bearing
6309-2RSC3 SST           Single Row Ball Bearing
6313 SST           Single Row Ball Bearing
6407 SST           Single Row Ball Bearing
6407 SST           Single Row Ball Bearing
654-5SST Super Sticky Notes, 3x3 In., Assorted, PK5
660-3SST Sticky Notes, 4 x 6 In., Assorted, PK3
675-6SST Sticky Notes, 4 x 4 In., Assorted, PK6
675-6SST Sticky Notes, 4 x 4 In., Assorted, PK6
6905-2RS SST           Single Row Ball Bearing
7           AMAT 3300-01132 FTG TBG NUT 3/8T SST VCO 7/8-14THD
7204BTN SST           Angular Contact Ball Bearing
7A 5-Mode 3.7-8.4V 32mm SST-90 LED Flashlight Torch Driver Circuit Board
7A 5-Mode 3.7-8.4V 32mm SST-90 LED Flashlight Torch Driver Circuit Board
7A 5-Mode 3.7-8.4V 32mm SST-90 LED Flashlight Torch Driver Circuit Board
8           AMAT 3690-01879 SCR CAP SKT HD 10-24 x 3/4L HEX SKT SST SLVR-PLT
8           AMAT 3690-01879 SCR CAP SKT HD 10-24 x 3/4L HEX SKT SST SLVR-PLT
8           AMAT 3690-02239 SCR CAP SKT HD 1/4-20 x 1" HEX SKT SST SLVR PLT
8" 150lb Tensile Strength 316 Stainless Steel Cable Ties 100/bag FAST SHIPPING!
83610           In Box, SST Bearing R18-2RS Bearing, 1-1/8" ID, 54mm OD
87500           SST Single Row Ball Bearing
92988 Old-Stock, Risco 601S SST Tape HD Blade, 2-1/2" Length, 1" Wide
92R4860 Microchip Sst39Vf6401B-70-4C-Eke Memory, Flash, 64Mbit, 70Ns, Tsop-48
92R4946 Microchip Sst49Lf008A-33-4C-Eie Memory, Flash, 8Mbit, Serial, Tsop-40
92R4946 Microchip Sst49Lf008A-33-4C-Eie Memory, Flash, 8Mbit, Serial, Tsop-40
AD64SSH POP, BLIND CLSD-END RIVET .187D, .126-.250GR DMHEAD ALU/SST
AD66SSH POP, BLIND CLSD-END RIVET .187D, .251-.375GR DMHEAD ALU/SST
Adcraft SST-1418 14" x 18" Stainless Steel Serving Tray
Aeroquip Fitting -- 1/4" SST -- (Lot of 2)          
Agastat 24 VDC .1 - 10 Second Timing Relay with Base Socket SST120AA
Agastat Cat No SST22AGA Timing Relay 120V 18 Sec-30 Min             Condition
Agastat SST12ACA Timing Relay 120VAC Time: 6-60 Sec.
Agastat SST12ACA Timing Relay 120VAC Time: 6-60 Sec.
AGASTAT SST220AA TIMING RELAY
AGASTAT SST220AA TIMING RELAY
Agastat SST72AAA Solid State Timing Relay 120VAC 10Amp -          
AGASTAT TIMING RELAY SST12AGA 18 SEC TO 30 MIN, 120VAC W/ DINRAIL BASE
AGASTAT TIMING RELAY SST12AGA 18 SEC TO 30 MIN, 120VAC W/ DINRAIL BASE
Agastat Timing Relay SST22AAA 120V 1-10 Sec.
Agilent Capillary SST 0.12mm ID 120mm Pre-swaged 5067-4652 HPLC
Agilent Capillary SST 0.12mm ID 220mm No Fitting 5065-9935 HPLC
Agilent Capillary SST 0.12mm ID 90mm Long 5067-4649 SX/S HPLC
Agilent Capillary SST 70MM 0.12MM ID NIB
Agilent Column Connect Capillary SST 380 X 0.17mm G1315-87311 HPLC
Agilent HP Keysight 0515-1141 Screw Pan-HD Torx-T10 M3X0.5 16mm-LG SST-300
Agilent Inlet Capillary SST 0.12mm ID 150mm Long 5067-4650 SL/SX HPLC
Agilent Inlet Capillary SST 0.12mm ID 280mm Long 5067-4651 SL/SX HPLC
Agilent SST Capillary 0.12mm ID 5067-4649 and 5067-4650 mix lot of 2
Agilent SST Capillary 0.12mm ID 5067-4652 and 5067-4653 mix lot of 2
Agilent/HP G1313-87304 Capillary SST 180mm x 0.12mm          !
AK28-27MM           SST Pulley
AK28-30MM           SST Pulley
AK41-1           SST Pulley