1756-IF8 +++1756-IF8 現(xiàn)貨
1756-IF8 +++1756-IF8 低價(jià)
該類產(chǎn)品市場上比較多,以四川德陽四星電子產(chǎn)品SC-485C接口轉(zhuǎn)換器為例,該轉(zhuǎn)換器用于RS232到RS485/RS422通訊轉(zhuǎn)換,體積小巧,兩個(gè)DB-9插頭大小,采用串口竊電技術(shù),不需外接電源。SC-485C結(jié)構(gòu)及引腳定義如圖二所示。RS232端為DB-9孔座,可以直接插PC機(jī)COM口上,RS485/RS422端為DB-9針座, RS485時(shí)使用3腳和8腳, RS422時(shí)用3腳、8腳、1腳和7腳。利用該接口轉(zhuǎn)換器制作編程電纜如圖三所示。左側(cè)為SC-485C接口轉(zhuǎn)換器,右側(cè)從上而下分別為DIN-8、RJ11、DB-9和DB25插頭編程電纜,電纜靠近接口轉(zhuǎn)換器插頭均為DB-9孔型插頭,另一頭均為針插頭,分別對應(yīng)不同物理結(jié)構(gòu)PLC編程口。
接線時(shí)PLC端是RS485RS422選擇對應(yīng)引腳,“發(fā)送接接收,接收接發(fā)送,正接正,負(fù)接負(fù)”規(guī)律連接,SC-485C接口轉(zhuǎn)換器與PLC RS485、RS422接口接線圖和PC與PLC RS232接口接線見圖四。
要做好一根編程電纜,要進(jìn)行RS232/RS485/RS422之間接口轉(zhuǎn)換外,還必須了解PLC編程口各引腳定義,是采用同一種接口標(biāo)準(zhǔn),不同廠家PLC其引腳分布也是不相同。表二提供了幾種主流PLC引腳定義,供自制時(shí)參考。未列舉PLC可以查找隨機(jī)技術(shù)手冊,也可以到網(wǎng)上找一個(gè)通用型人機(jī)界面(HMI)說明書,HMI與各廠家PLC聯(lián)機(jī)連線說明中可以找到市場上絕大多數(shù)PLC引腳定義。
【公 司】: 廈門泰尼電氣有限公司
【主 營】: AB、GE、施耐德等各類PLC產(chǎn)品
【價(jià) 格】: 電議
【發(fā)布人】: 張亮
【電 話】: 18030028083
【所在地】: 福建 - 廈門
【座 機(jī)】: 0592-6809819
【來 源】: 供應(yīng)信息 > 電工、電氣 > PLC
【Q Q】: 2314094943
AMAT Part 0100-90286 Applied Material Beam Profiler
AMAT Part Number 0100-00828 Applied Material Vibration
AMAT Part Number 0100-00860 Beam Stability Monitor
AMAT Part Number 0100-00929 I/V Converter-Beam Profile
AMAT Part Number 0100-90025 24V 1A Power Supply
AMAT Part Number 0100-91105 I/V Converter Power Supply
Semiconductor Systems 09-04352,PB 146298,09-04393-B Bo
AMAT Part Number 0100-90870 4 Phase Stepper Controller
Leybold-Heraeus NIZ 2 Power Supply
Varian MAT 25649/039 Power Supply
Tokyo Electron CVD/Etch Reactor Interface 2 Analogic
Tokyo Electron WZ81-000694-1 PCM Valve Drive
Tokyo Electron Transport Gas Panel Interface Analogic
Tokyo Electron CVD/Etch Reactor Interface 2 Analogic
Tokyo Electron CVD/Etch Reactor Interface 1 Analogic
Tokyo Electron CVD/Etch Gas Panel Interface Analogic
ASML 4022.431.2340 Spacer Block Tilting Lens
AMAT Applied Materials Motorola MVME211 0100-11030
ASML/SVG 4022.471.6177 ProDrive Power Supply PADC 65/13
Western Atlas INT Assy D 155562
Western Atlas INT Assy D 155567
Western Atlas INT Assy D 155568
Verteq Process System Division SW800-C1-E2
New Varian 965195-000 PCB Output For 988 Controller
Werlatone Directional coupler C3059 500-1000 MHZ
ASML 4022.436.5900 Mains Switch Unit Lithography SVG
ASML/SVG Art Remote Control Box Assy ARCB
NSK EMB014CF1-05 Motor Drive/Controller
ASML SVG Cabinet Supply Unit (CSU) 4022.436.5400
LAM Research Endpoint Detector 853-001983-011
ASML 4022.436.7565 Mains Switch Unit Lithography SVG
ASML 4022.430.19311 Oldelft B.V. 212C05000 SO50
New LAM 716-011536-001 Ring Insulator-Upper Electrode
New LAM 839-024323-100 Weldmt. Prim Shutoff Gas
AMAT Applied Materials 0100-00012 VME Counter Board
ASML/SVG 4022.436.4170 Short Stroke Amplifier CTF
ASML/SVG 4022.471.6598. ACPA MK4 CFT Engineering
Ultra-Clean Cleanroom 699-041 Size Medium Lot 41
New In Package ATMI SR4BDAFB-050315 NowPak SmartProbe
New In Package ATMI SR4BDAFB-050316 NowPak SmartProbe
New In Package ATMI SR4BDAFB-050406 NowPak SmartProbe
MKS HPS Products Series 999 Quattro Multi Sensor Trans
New VAT PM-5 FABR No. 641PM-36PM
Precision Scientific incubator 31532