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GE HE693IBS100 max355差動4通道模擬開關(guān)接4路熱電阻信號轉(zhuǎn)換電路，圖中只畫出路轉(zhuǎn)換電路，接線方式為三線制，使能端en接高電平，使max355一直有效。a0、a1引腳接至mc9s12d64單片機的pp0和pp1端，用于選通某一路熱電阻信號進行轉(zhuǎn)換與測量。當max355選通某一通道后，該通道將與公共端接通，假設(shè)選通通道1，200ua恒定電流由no1a和no1b輸出流經(jīng)熱電阻產(chǎn)生毫伏級電壓信號，此信號在vin1和vin2處被ads1216采樣。
廈門岳航計算機工程有限公司
聯(lián)系人：李素云
企業(yè)QQ：2851195446，2851195466
手機：18965423501
座機：0592-5165501
ads1216組成4路全差分通道。單片機通過porta與ads1216通信，用于控制ads1216選通某一路模擬量輸入通道并進行采樣，每一個控制信號均通過光耦合器和兩個施密特觸發(fā)器進行數(shù)字隔離，這樣做可有效抑制各種噪聲干擾，提高傳輸通道上的信噪比。ads1216采樣每一路通道之前均進行偏置與增益自校準。當/drdy變?yōu)榈碗娖?，標志著?shù)據(jù)寄存器中數(shù)據(jù)已準備好，單片機便從24位數(shù)據(jù)輸出寄存器(dor)讀取轉(zhuǎn)換結(jié)果。
2.3 can和rs-485通信電路
can和rs-485通信電路原理圖如圖4所示。
mc9s12d64單片機的can輸入與輸出引腳(rxcan0和txcan0)分別接至收發(fā)器pca82c250的txd和rxd引腳。pt2用來控制數(shù)據(jù)接收與發(fā)送，當pt2為低電平時，接收數(shù)據(jù);當pt2為高電平時，發(fā)送數(shù)據(jù)。輸入rs通過一電阻接地，使pca82c250工作在斜率控制模式下。sn65lbc184為具有瞬變電壓抑制的rs485差分收發(fā)器，因此本智能節(jié)點可以接入采用canbus或rs485的測控系統(tǒng)，并方便的與各種組態(tài)軟件進行通信。
Orbotech NASUC-0330139 Rev-D Nasuc Panel
Orbotech UCP-0343696-A UCP-0327565B Board
GE Fanuc IC693CPU351-FN Version-9.11 CPU Module #351 25 MHz w/Key
Ge Fanuc IC693MDL741F Output Module 12/24VDC 0.5A 16PT NEG
Siemens 6ES5 470-7LA12 8-Channel Analog Output Module
Ge Fanuc IC200ALG331 IC200ALG331-EB Analog Input Module 16Bit with 4 Channels
GE Fanuc IC693CPU331-CC CPU Module for Series 90-30
ELO ET1525L-7CWC-1 15" Touchscreen Monitor w/Cables
GE Fanuc IC693DSM302-AA Motion Mate 2-Axis Controller
Omron C200H-OC222 12 Channel Output Module 250VAC 2A/Channel 8A/Unit 30VDC
New Leuze Electronic CB-D15E-10000S-11GF 548521 Connection Cable 10m Length
New in Package Leuze 50035735 RS4-MG-X1-Set Connector 15-Pin D-Sub
New in Package Automation Direct CD08-0W-100-C1 Connector Cable 4-Pin
Omron V600-CD1D-V3 Identification System Controller 24VDC 10mA (broken mount)
GE Fanuc IC693ALG391C Analog Output PLC Module 2 Channel
IOtech ChartScan/1400 Portable Data Recorder for Temperature Scanning
Cutler-Hammer 92-00704-1 Factorymate Configurable Keyboard (Operator Interface)
Siemens 6ES5 095-8MD01 PLC Interface CPU
Delta Tau ACC28A 4-Channel Programmable Controller w/IDC16-036 Cable Assembly
Ge Fanuc IC692MDR541C I/O Module w/Ge Fanuc IC692CPU211D CPU Module
QuickSilver Controls QCI-EC-SMI-10 SMI Port Extension Cable 10' Length
Adapt Tech 10330-00088 Rev C VTB2 Backplane Module
HP 35650A System Main
Adapt Tech 10330-00088 Rev C VTB2 Backplane Circuit Board with Cables
Western Servo Design 10119-100 RVB Power Board
Mizar MZ8305 REV-G Dual VME I/O Module w/E11-11167-1 REV-J Board
Mizar MZ8305 REV-G Dual VME I/O Module w/E11-11167-1 REV-H Board
Mizar MZ8305 REV-G Dual VME I/O Module w/E11-11167-1 REV-F Board
General Scanning PWA E11 1016910 REV-I Y-Servo Board
General Scanning E10-1203815 310-116161 REV-A Y-Servo Board505-6108
505-6208
51309355-001
51309586-225
51401583-100
51402755-100
621-9940
942-M0A-2D-1G1-220S
COMMANDER 100
DS3800DMPK1E1D
DS3800HMPJ1A1D
DSDX454 5716075-AT
DSQC539
DSQC608
DSQC652
DSQC658
DSQC668
HE693IBS100
IC200CHS002F
IC200CHS022
IC200UDR005-AA
IC609SJR100
IC670MDL640
General Scanning E10-1203814 310-116161 REV-H Servo Board
General Scanning E10-1203814 000-3003001 REV-D X-Servo Board
General Scanning E10-1203814 000-3003001 REV-C X-Servo Board
General Scanning E10-1203814 000-3003001 X-Servo Board
General Scanning E10-1203814 000-3003001 Y-Servo Board
General Scanning E10-1203815 00-3003001 X-Servo Board
GE FANUC IC670MDL640J Input Module 24VDC POS/NEG IN 16PT
General Scanning E10-1203815 00-3003001 Rev-D Y-Servo Board
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