FOXBORO P0971WV DNBT 當(dāng)系統(tǒng)啟動(dòng)時(shí)，程序完成初始化后便自動(dòng)進(jìn)入從電力線接收數(shù)據(jù)的狀態(tài)，開始檢測(cè)載波信號(hào)的有無及正確與否。如果檢測(cè)到載波信號(hào)且正確，則系統(tǒng)進(jìn)入載波接收中斷程序，開始接收從電力線上傳來的數(shù)據(jù)；如果一開始沒有載波信號(hào)，則系統(tǒng)開始檢測(cè)串口，判斷串口是否有數(shù)據(jù)傳送過來，若目前有串口數(shù)據(jù)則系統(tǒng)進(jìn)入串口數(shù)據(jù)接收狀態(tài)，確定串口數(shù)據(jù)接收完成后就馬上進(jìn)入載波發(fā)送中斷程序，完成數(shù)據(jù)調(diào)制并發(fā)送。如果電力線及串口都無數(shù)據(jù)傳送發(fā)生，則系統(tǒng)重新進(jìn)入檢測(cè)狀態(tài)，重新開始檢測(cè)電力線，進(jìn)入新一輪循環(huán)。流程圖如圖4所示。為了避免串口同時(shí)處于接收與發(fā)送狀態(tài)，造成數(shù)據(jù)沖突，程序中是以狀態(tài)字的查詢以及中斷的設(shè)置來完成。
本文介紹的基于ATmega88V與 ST7538低壓電力線載波通信模塊的電路設(shè)計(jì)方案具有結(jié)構(gòu)簡單、成本低、工作方式靈活可靠、抗干擾能力強(qiáng)等特點(diǎn)。經(jīng)過實(shí)驗(yàn)觀察，設(shè)備運(yùn)行良好，數(shù)據(jù)傳輸穩(wěn)定可靠，遇故障可自動(dòng)重啟，可以實(shí)現(xiàn)無人守候，為復(fù)雜的工業(yè)環(huán)境下的工業(yè)控制和數(shù)據(jù)傳輸提供了7381A83G02 4MSE14 Multibus Shared Extended Memory Board
7381A86G01 Module NL-1032 120VAC Module (in blue plastic)
7381A87G01 Module NL-1062 120VAC Module (in blue plastic)
7381A88G01 2MDMD1 MDMD Dtr card on MDM Board
7381A93G01 4MHC9 Multibus Highway Controller Board
7381A93G01 4MHC13 Multibus Highway Controller Board
7381A93G01 4MHC15 Multibus Highway Controller Board
7381A93G01 4MHC17 Multibus Highway Controller Board
7381A93G01 4MHC19 Multibus Highway Controller Board
7381A93G01 4MHC31 Multibus Highway Controller Board
7381A93G01 4MHC35 Multibus Highway Controller Board
7381A93G01 7MHC5 Multibus Highway Controller Board
7381A93G03 / 4D33737G03 4MHC29 Multibus Highway Controller Board
7381A93G03 / 4D33737G03 4MHC31 Multibus Highway Controller Board
7381A93G03 / 4D33737G03 4MHC35 Multibus Highway Controller
Board
7381A93G03 7MHC9 Multibus Highway Controller Board
7381A93G03 7MHC12 Multibus Highway Controller Board
7381A93G03 7MHC18 Multibus Highway Controller Board
7381A93G03 7MHC22 Multibus Highway Controller Board
7381A93G03 9MHC4 Multibus Highway Controller Board
7381A93G03 / 3A99166G03 11MHC1 Multibus Highway Controller Board
7381A93G03 / 3A99166G05 11MHC1 Multibus Highway Controller Board
7381A93G05 7MHC24 Multibus Highway Controller Board
7381A93G05 7MHC27 Multibus Highway Controller Board
7381A93G05 9MHC6 Multibus Highway Controller Board
7381A93G05 / 3A99166G05 11MHC3 Multibus Highway Controller Board
7412C33G01 Fan Assy Dual Fan Assy in 486 WEStation
Cabinets (Bottom)
7412C33G02 Fan Assy Dual Fan Assy in 486 WEStation
Cabinets (Top)
772B217G01 PBA card PBA 152148-001 INTEL card ISBC254S
772B217G02 PBA card PBA 152148-001 INTEL card ISBC254S
772B246G03 SMS SMS 8006 Board
772B246G04 SMS SMS 8006 Board
772B379G01 / 7380A27H01 SBC SBC card Intel PBA134422-004
772B379G01 SBC SBC card Intel PBA134422-005
772B379G01 SBC SBC card Intel PBA134422-006
772B379G01 SBC SBC card Intel PBA134422-007
772B379G01 SBC SBC card Intel PBA143472-004
772B387G01 Tapemaster card CIPRICO Tapemaster card
772B398G01 Memtech Memtech card
774A759H01 RTD 120ohm Nickle RTD
82402025 Card BIT 3 Corp Model 464-202 card
8580A64G03 Power Supply Power Supply Module with TODD MDT-
164-2415R
9052A91H01 Tool Crimper Tool
9052A91H02 Tool Crimper Tool
9052A91H03 Tool Crimper Tool
9115A09G12 Cable Q-line card cable (straight plug)
9115A20G16 Cable MBU to QBE cable
9115A23G06 Cable Ribbon cable off Transition panel
9115A23G16 Cable MSL to TCP ribbon cable
9115A25G04 Cable QBE to QBE cable
9115A25G29 Cable Long, Wide 25pin ribbon (new)
9339A37H01 Power Supply Pioneer Magnetics PM2497 4VF +12V 60A
9690A38G34 RTD Card 3DRE 7380A92G03s on a 4QRT2 G02
(9690A38G34 on sticker)
9690A38G38 RTD Card RTD Daughter
9705A14H16 Card Grant Continuity Card (Digital 5016679 01)
9705A33G01 Plug Black Plug on QBO card
9942A27G05 Cable Data Hwy to MHC card cable
9942A27G06 Cable Data Hwy to MHC card cable
9942A27G07 Cable Data Hwy to MHC card cable
9942A27G12 Cable Data Hwy to MHC card cable
9942A29G04 Cable Ribbon Cable to MRC card
9942A34G17 Cable 13v Power Supply Cable
9942A49G06 Cable Mouse Cable
9942A95G14 Cable Cabinet Cable Assy, Black, Half Sell to Card
Edge
D903900G06 Cabinet DPU Cabinet Assy
D903900G07 Cabinet DPU Cabinet Assy
Video card TurboxGx Video Card 13W3 270-2325
SCSI card SCSI Interface Card 270-2919
CD ROM 48x CD ROM 270-2919
Power Supply Power Supply Sparc5 300-1279
Hard Drive 1Gig (1080mb) Hard Drive SCSI 370-2168
Power Supply Power Supply Ultra5 370-3162
Card DIGITAL M7504-DEQNA 5016028-01 card
Card PCI Card 370-3196
Video card Raptor GFX Video Card 370-3753
Hard Drive 8.6gig Hard Drive 370-3863
Power Supply Power Supply Ultra5 370-4326 MITAC MPV-200REF
Hard Drive 20Gb Hard Drive 370-4327
Sun Workstation Ultra1 (configured to customer spec
w/ or w/o 2SGI5 card)
Sun Workstation Ultra5 (configured to customer spec
w/ or w/o 3PGI1 card)
Keyboard SUN Type 5c Keyboard and Mouse
Backplane Sparc5/20 Hard Drive Backplane 501-2461
Backplane Sparc5/20 Hard Drive Backplane 501-2462
Memory Memory 32mb 501-2653
SCSI card SCSI Card (PCI) 501-2741
MotherBoard Sparc5 MotherBoard 501-2778 / 2779
MotherBoard Ultra5 360MHz Processor 501-5148
SCSI Card SCSI Card 501-5656
Display 17 to 23" LCD Replacements for Sun Systems
Black Box Black Box model 5W090A
Drive Hard Drive - 4.1GB 10K RPM F/W SCSI Drive
Media External 6 Bay Multipack w/3 x 4.1GB 10K RPM F/W SCSI
Drives
Drive Unipack UltraSCSI 9.1GB External Disk Drive 599-2325
-01
Drive Unipack UltraSCSI 18.2GB External Disk Drive 599-
2326-01
Tape Drive QIC2000 2.5GB External Tape Drive 599-2042-02
Tape Drive Model 411 4/8GB External DAT 4mm Tape Drive
595-3096-01
CD ROM Model 411 External SCSI CD ROM Drive 595-3225-01
Hard Drive Model 911 External Quad 3.5HD Drive 595-
3286-01
P/S Fan Fan for Deltron 11088XA (new)
P/S Fan Fan for Deltron 11564XA-01 (new)
Power Supply PowerOne HTAA-16W-A power supply inside
operator keyboard
Power Supply Elco KMC15U-1 power supply inside operator
keyboard
Power Supply Sorensen QSB28-2 24VDC P/S
Rack P/S SOLA C VDC
Speed Transmitter DYNALCO Type SS2000-410
IBM CPU IBM Industrial Rack-mount PC Type 7546
IBM IBM TECLADO 1394946
Keyboard Keyboard model 3201233-01
Reader SUN Reader 595-1711-04
Mouse Logitech M-CU15-9F three button mouse
Digital MicroVAX II Digital MicroVAX II 630QZ-A2 w/
Maxtor XT1085 hard drive
Neoware Terminal Neoware EON4000S-2-6 Terminal for
Ovation
Cable 9 Pin Female to Cat 5 cable, light blue, flat P#
72338301
一套參考方案。
FOXBORO P0971WV DNBT
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