IC693ACC303IC693ACC303
當CPU處理前臺任務時，USB的傳輸可在后臺進行；后臺中斷服務程序和前臺主程序循環之間的數據交換可以通過事件標志和數據緩沖區來實現。當PDIUSBD12從USB收到一個數據包，即對CPU產生一個中斷請求，CPU立刻響應中斷。在中斷服務程序中，固件將數據包從PDIUSBD12內部緩沖區移到循環數據緩沖區，并將PDIUSBD12的內部緩沖區清零，以便接收新的數據包，使CPU可以繼續執行當前的前臺任務直到完成。本文利用PDIUSBD12的端點1進行命令的傳輸和應答，端點1每次接收計算機發送過來的8 B指令，其指令格式如表2所示。例如，接收到十六進制碼52 01 00 03 00 07 00 50，表示讀24C01器件從03字節開始的7個字節的數據。52H為R的ASCII碼，57H為W的ASCII碼。端點2用于數據的傳輸。
PLC的發展趨勢
隨著PLC應用領域日益擴大，PLC技術及其產品結構都在不斷改進，功能日益強大，性價比越來越高。
（1）、在產品規模方面，向兩極發展。一方面，大力發展速度更快、性價比更高的小型和超小型PLC。以適應單機及小型自動控制的需要。另一方面，向高速度、大容量、技術完善的大型PLC方向發展。隨著復雜系統控制的要求越來越高和微處理器與計算機技術的不斷發展，人們對PLC的信息處理速度要求也越來越高，要求用戶存儲器容量也越來越大。
（2）、向通信網絡化發展
PLC網絡控制是當前控制系統和PLC技術發展的潮流。PLC與PLC之間的聯網通信、PLC與上位計算機的聯網通信已得到廣泛應用。目前，PLC制造商都在發展自己的通信模塊和通信軟件以加強PLC的聯網能力。各PLC制造商之間也在協商通用的通信標準，以構成更大的網絡系統。PLC已成為集散控制系統（DCS）*的組成部分。
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鄭娟萍
廈門仲鑫航自動化設備有限公司
（3）、向模塊化、智能化發展
為滿足工業自動化各種控制系統的需要，近年來，PLC廠家先后開發了不少新器件和模塊，如智能I/O模塊、溫度控制模塊和專門用于檢測PLC外部故障的智能模塊等，這些模塊的開發和應用不僅增強了功能，擴展了PLC的應用范圍，還提高了系統的可靠性。
（4）、編程語言和編程工具的多樣化和標準化
多種編程語言的并存、互補與發展是PLC軟件進步的一種趨勢。 PLC廠家在使硬件及編程工具換代頻繁、豐富多樣、功能提高的同時，日益向MAP(制造自動化協議)靠攏，使PLC的基本部件，包括輸入輸出模塊、通信協議、編程語言和編程工具等方面的技術規范化和標準化。
KYOCERA MK808C CYAN MAGENTA YELLOW DEVELOPING UNIT NEW
Hewlett Packard C2986-60006 3.25GB Printer Hard Drive
MARKEM E REV A PRINTING PADS NEW
MANNESMANN TALLY 080017 & 080018 LH RH LID SUPPORT NEW
GENICOM TI MICROLASER 2550770-0001 TONER OEM NEW
IFM/ Efector Electronic: IGA2005-ABOA Proximity Sensor
Turck: Bi2-M12-AP6X-H1141 Proximity Sensor. New Old Stock. Sealed
Baumer Electric Model: ES12 Cord Set,
Turck: FCS-M18-AP8X/D087 Air Flow Monitor w/ Nickel Plated Brass Housing W3
Turck: Model: SDNB-0008D-0005 8-Port DeviceNet
Baumer Electric Model: FUE-015A2002 Sensor
Turck Model: Bi4-M12-AP6X-H1141 Proximity Sensor with U2465 Cable
Turck Model: VB 80-5 EuroFast 8 Port Cable Conductor
Matsushita MQ-FWCR2-DC12-24V Photoelectric Sensor
PHD 17000-34-0 SENSOR MOUNTING BRACKET QTY (4) NEW
HONEYWELL MICROSWITCH 922FS0.8-A4N-020
Lot of Omron Model: D2D-1000 Electromechanical Switch Door Interlock. Qty. 5
SMC Pneumatics Model: D-F5P Auto Switch
Festo Model: 175484 Proximity Sensor
IFM / Efector Electronic Model: AC2251 Fault Interface
Turck / Banner: Bi15-K40SR-FZ3X2 Proximity Sensor
Lot of SMC Model: D-C73 Reed Switches. Qty. 3
Turck Elektronik Model: 1003732 Proximity Sensor W3
Honeywell / Micro Switch 992AA08AP-S Proximity Sensor
(3) MICRO SWITCH FYBC5C5-2 Proximity Sensor, New !! =
Turck: Bi1-EG05-AP6X-V1331 Proximity Sensor.
Turck: 4669460 Proximity Sensor.
Banner CI3RC Current Sensor, CI3 Series Model
Turck / PicoFast: U2134-16. P/N: PKG 3Z-1.2-PSG 3/S90. New Old Stock
Turck / PicoFast: U2134-15. P/N: PKG 3Z-039-PSG 3/S90
Mix Lot of pHd, Inc. Brackets, PN: 12247 & 17000-33-9
Lot of Brad Harrison: 804001A09M050 Cord Sets, Qty. 2
Honeywell / Micro Switch Model: 922AB2BM-A9N-L Switch. New Old Stock
Turck Model: Bi4-M12-AP6X-H1141 Proximity Sensor w/ RK 4T-6 Cable
emecanique Model: XS1-1M12PA270 Proximity Sensor. 48V, 200mA
Baumer Electric: ASIA 36A4011 w/ Four : ES 32.2P 038 Cords. One No Conn. W1
Pepperl+Fuchs Model: UC2000-30GM-IU-V1-HS Ultrasonic Sensorn. New Old Stock
Balluff Model: BIS C-650 / BIS C-6002-019-03-KL2 BIS Processor
Lot of Compact Air #R3 Digital Output Limit Sensors,
Honeywell / Micro Switch FE7C TT2R-M. New Old Stock =
Baumer Electric: IFFM-06N1598/O1L Proximity Sensor
Honeywell / Micro Switch FE7C TT2E-M, New =
Autotron Inc. Model: A1100 Beam Sensor W
Honeywell Micro Switch Model: FE-TLS3 Proximity Sensor
Daniel Woodhead / Brad Harrison: 60-2424-2 Cable
Baumer Electric Model: IFRM 12N3701/S14L Inductive Sensor. New Old Stock
Turck: B 5133-0 Female Conn. Ident. No. D: 6901030. USA: U0879. New Old Stock
Turck Model: Bi3U-EM12-AP6X-H1141 Proximity Switch. New Old Stock. No Box
Turck Model: Bi15-W30-DAP6X-H1141/F3 Proximity Switch. New Old Stock
Turck: Bi2-M12-AN6X-H1141 Proximity Sensor. New Old Stock. Sealed
Turck Model: VB803M-PX9-5 Picofast Multibox. U7036-2
(20) PEPPERL + FUCHS 33421 Proximity Sensor, =
MARTONAIR QM/134/N/5 Sensor, =
Turck Model: VB803M-PX9-10 Picofast Multibox. U0879-70
Turck Model: VB803M-PX9-* Picofast Multibox. 1807U
Relay & Control Model: RCL-306 Oil Tight Limit Switch W2
Honeywell / Micro Switch PN: FE-LOG5-14 Logic Card. New Old Stock
Honeywell / Micro Switch FE-AG1, NIB =
Eaton / Cutler-Hammer 1170A-000 Source Head, 9 Ft. Cbl
Turck PicoFast Mulltibox - PTP 16-DBS25. Model: U0061
Turck PicoFast Molded Cordset, PKG 3Z--1.2-PSG 3. P/N: U2134-23
Turck Pico Fast PSW 4M-10/S90 Four Wire Cordset
Baumer Electric: IFR06.26.35/L Proximity Sensor. New Old Stock
Lof of Pepperl+Fuchs Type: Z129/EX Level Sensors
Turck Model: NI5-G12-AP6X Inductive Proximity Sensor
Compact Air Model: WHE Limit Sensor. New Old Stock
IFM Efector Model: IEB3001-BP0G Inductive Proximity Sensor. New Old Stock. =
Turck / PicoFast: U2134-25. P/N: PKG 3Z-0.3-PSG 3/S90
Turck Model: 4672800 Proximity Sensor
PHD Model: 17533-00-0 Quick Connect Switch Cordset
SUNX RT-110R RT-110T-HF15 NO 5A 15-039-105 SENSOR BEAM
Lot of Baumer: IFR 06.26.15/L Proximity Sensors, 3
D-M-E MTC-8-G THERMOCOUPLE CONNECTOR NEW ?
Allen Bradley Cat. #: 440N-S32024 SIPHA Sensor
UVISENSOR US365HP2-010.00 320-390 SPECTRAL NEW
Automation Direct Model: SS2-0N-4A Photoelectric Sen.
IFM/ Efector: W80530. 3-Wire Pico Right Angle Connect. New Old Stock
Turck / PicoFast Model: RK40-4M Cable.
Turck Model: 46032 Proximity Sensor
Turck Model: Bi2-G12-AP6X-H1141 Proximity Sensor.
Turck Model: Bi2-M12-AD4X-H1141 Proximity Sensor with Turck Cord
Nagano Keiki Mocel: CE10 Pressure Switch
Baumer Electric: IFFM 12N17A/S05L Flat Pack Inductive Sensor. New Old Stock
(5) TURCK NI5-G12-AP6X / NI5G12AP6X Sensor, =
Honeywell / Micro Switch Model: FEF-PLT1 Cable
WESTEK THREADER OVERTEMP CSA CL1251 XLPE 20644-2 PEPI
emecanique Model: XB2-M12PA370D Proximity Switch
Honeywell / Yamatake Model: FE7C-RPF6 Photo Sensor
IFM Efector Model: KI0034, PN: KIE2015-FBOA Sensor
Turck "BusStep" : SDNB-0008D-0008 8-Port DeviceNet
Turck: B5133-0. Ident-No. D: 6901030. Ident-No. USA: U0879-54. New Old Stk
Turck Model; 116237 / WN116237 Inductive Proximity Sensor. New Old Stock
Baumer Electric: IFFM-06P1598/01L Proximity Switch,
IFM/ Efector Electronic : KIE2015-FBOA/LS100AK Sensor
IFM/ Efector Electronic: IFA2002-FRKG/US-100-IRF Sen.
SunX Model: GLX-N12F Inductive Proximity Sensor
Turck Model: Bi2-M12-AP6X-H1141 Proximity Sensor.
Turck Model: Bi3NF-EM12HE-AP6X-H1141 Proximity Sensor.
Turck Model: 46107 Proximity Sensor.
Turck Model: Ni4-M12-AP6X-H1141 Proximity Sensor
Honeywell Micro Switch 922FS1 Sensing & Control 922FC =
PEPPERL + FUCHS 050407 P/N: 050407 SENSOR QTY (2) NEW
Honeywell / Microswitch Model: FE3-FD6-P Switch
00215-1024-000-00 Proximity Sensor, Mfg. Unknown
Turck Model: MK1-22UP-Ex0/24VDC Multi Modul Switching Amplifier W
Baumer Electric My-Com Model: G75P/300 Precision Switch. New Old Stock
Baumer Electric IFR 12.24.35/K330 Proximity Sen. New
IFM Efector: IYB3000-8BPOG/IY5021 Inductive Prox. Swtc
Turck / PicoFast: U2134-23 w/ pHd 55804-1-02 Switch.
IFM/ Efector: E10214 / US/2-DC-P/N-R0L-PUR-5M/L Cordse
Turck: BI2-S12-YOX-H1141 Inductive Proximity Sensor
Yamatake (Pepperl+Fuchs) FE5R-LSA6D Convergent Beam
Honeywell Micro Switch Model: 926AB3W-A9T. New Old Stock
Honeywell Micro Switch 922FSO.8-A4P-G-020 Proximity
Baumer Electric: IFFM-08P179/01 Proximity Sensor. New Old Stock
Allen Bradley Cat #: 871T-L8K18 Inductive Proximity Sensor. Series A
Pulsotronics Model: 9962-1602 Proximity Sensor
Honeywell / Microswitch 922AA1Y-A4P-L Proximity Switch
Turck Model: BI2-P12-YOX 7M Proximity Sensor. 8.2 VDC / 5 mA W
IFM / Efector NV 0100 Capacitive Proximity Sensor
Balluff Model: BES 516-325-G-E5-Y-S49 Proximity Sensor
Turck P/N: Bi1-G08K-AP6X-V1131 Proximity Sensor with Cable
Micro Switch FMBA DELTROL CONTROL / AMPLIFIER FMAIII, =
Turck: Ni5-S12-Y0X-H1141 Proximity Sensor, Ident-No: 4030300. New Old Stock
Turck Model: Bi1-G08M-AD6X-H1341 Proximity Sensor. New Old Stock
Turck Model: Bi1-EH04-AP6X-V1331 Proximity Sensor. New Old Stock
Turck P/N: 47624 Proximity Sensor
Turck P/N: Bi1-G08K-AP6X-V1131 Proximity Sensor
Contrinex Model: DW-AD-423-M8 Inductive Switch
Leuze Electronic Model: RK 41 Reflective Light Sensor
SMC Model: D-Y7PW State Switch
IFM/ Efector Electronic Model: PB5223 Pressure Switch. 20 - 400 PSI, ? NPT W
Schunk Model: FPS-A5 Proximity Position Sensor W
Turck Model: Bi4-M12-AP6X-H1141 Proximity Sensor
Baumer Electric Model: IFRM 08P1703/S35L Proximity Sensor.
Baumer Electric Model: IFRM 06P1503/S35L Proximity Sensor.
SUNX RT-410-4 5H SENSOR NEW
Turck Model: Bi2-M12-AD4X-H1141 Proximity Sensor with Turck Cord
Baumer Electric Model: ASIA 36A2211 Miniature Series 36 Interface Module
Baumer Electric Model: ASIA 36A4011 Miniature Series 36 Interface Module
Baumer Electric Series 36 Interface Cord. Part Number: ES31.5P
Honeywell / Microswitch 922FS5-A9P-F-L-Z925 Proximity
Lot of Omron Model: D2D-1000 Electromechanical Switch Door Interlock. Qty. 2
Pepperl+Fuchs Model: NMB2-12GM65-E0-FE Inductive Sen
PEPPERL + FUCHS NJ0.8-4-25-E1 033261 SENSOR QTY 2 NEW
PEPPERL + FUCHS 83313 PROXIMITY SENSOR NEW
Turck P/N: Bi5-M18-AP6X-H1141 Proximity Sensor
Turck Model: Bi4-M12-AP6X-H1141 Proximity Sensor. New Old Stock
Honeywell / Microswitch: 922FSO.8-A4N Proximity Switch
Honeywell / Microswitch 922FS1.5C-A4N Proximity Switch. New Old Stock
Honeywell / Microswitch Model: 922AA2BM-A9P-L Proximity Switch. New Old Stock
Baumer Electric: IFR 12.26.35/S13/L Proximity Sensor
Baumer Electric: IFF 08.24.35/L2 Proximity Sensor
IFM Electronics Model: OK5001/OKF-FPKG Fiber Amplifier. New Old Stock
Lot of Lumberg Automation RSCW 4/9 Angle Connector Kit. Qty. 2. New Old Stock
Balluff Model: BES 516-324-E4-C Proximity Sensor. New Old Stock. No Box
Pepperl+Fuchs Model: NBB2-V3-E0-V5 Inductive Sensor. New Old Stock. .
Omron Model: E2K-C25MY1 Capacitive Proximity Switch
PEPPERL + FUCHS FEF-PLT1-L2 FEA0923 9540 SENSOR NEW
Lot of SMC Model: D-Y7P PNP Solid State Switch ,Qty.2
Lemo Model: FGA.0B. Red Dot,. Two Pin Circular Connector.
IFM / Efector Electronic Model: AC2255 AS-Interface Buss System
Turck Model: MK13-451Ex0-R/24VDC Switching Amplifier
Honeywell / Micro Switch Model: 51ML1 9451 Precision Limit Switch
Honeywell / Micro Switch Model: FE-TR1-R Photo Optic Reflective Sensor
Turck Model: NI-G12-APZ31X-B31 Proximity Sensor
Panadac (Omron) Model: 918A Proximity Switch
Daniel Woodhead / Brad Harrison: 45410-001 Cable lot of 2 *
Namco Model: ET110-22110 Proximity Switch
IFM/ Efector: TRS-DC-P/N-R0L-PVC-2M/W Proximity Cable. New Old Stock *
Allen Bradley 871C-P5A18 Proximity Sensor
Pepperl+Fuchs Model: NJ5-18GM50-E0 Prox. Sensor,New
Omron TL-X5E1 Proximity Switch. New In Mfg. Box
Novotechnik Model: 75 50 Transducer. Art. Nr. 002333. New old Stock
TURCK BI 2-M12-AP6X-H1141 & BI 2V-M12-AP4X Sensor, =
Turck Model: NI-G12-AP6X-V1131 Inductive Proximity Sen.
Pulsotronic Model: D-5276 Inductive Proximity Sensor
Lumberg Mode: RKT 4-633/5M Sensor Cord Cable. No End
Lot of: OPB 866T51 9318 012529-02 OPTO SENSOR QTY (2). New Old Stock
Baumer Electric IDEX 23DR0401 Index Tag. New Old Stock
Namco Model: ET100-00090 Proximity Switch
Lot of Turck: Bi5U-M18-AP6X-H1141 Proximity Switches
Lot of Honeywell (Pepperl & Fuchs): LED18-GGG-P
Turck Model: Bi4-M12-AP6X-H1141 Proximity Sensor with Cable
Turck Model: RK 4.4T-1,ID Number: U2173 Proximity Cord. New Old Stock
Festo Model: 150857 Proximity Sensor with Clamp
Omron Type: E2K-C25ME1 Capacitive Proximity Switch
PHD Model: 17533-00-02 Cordset
Turck Model: Ni-4-Q12-AZ31X Sensor.
Turck: Bi2-EG08-AP6X-V1141 Proximity Sensor, P/N: 4669450. Used Pull
PEPPERL + FUCHS NJ4-12GM-N 14624S EEX PTB NR. 83/2022X PROXIMITY SENSOR
Lot of Turck U2491-1 / WS 4.5T-6 Right Angle Cables, 2
TRIGON ADCOTECH SHUTTLE DETECT SENSOR QTY (6) NEW
IFM Electronics OKF-FNKG Fiber Optic Disconnect, New
Turck / PicoFast ID Number: U2159 Cord. P/N: RK 4T-6
Turck Model: Ni4-S12-AP6X-H1141 Proximity Sensor
Pepperl+Fuchs Model: NJ8-18GK-WS Proximity Sensor. New Old Stock
Lot of Eaton / Cutler-Hammer 6275A-100 Lens Attachment
Mixed Lot of Pepperl + Fuchs Sensors, See List Below
SUNX NA40-8P Area Sensor, =
Turck Model: MK13-22UP-Ex0/24VDC Modular Switching Amplifier. Good Used.
Baumer Electric Model: FVDK 12P6101/S35A Fiber Optic Sensor
Baumer Electric Model: FVDK15P5103/S14 Glass Fiber Optic Sensor
Baumer Electric Model: FZDK 10P1101/KS3 Diffuse Fiber Optic Sensor
Baumer Electric Model: ASIA 36A4011 w/ Keyence FS-V11P
Baumer Electric: ASIA 36A4011 Four: ES 32.2P 038 Cords
Honeywell / Microswitch: 922AB3XM-A9N-L Switch. New Old Stock
HONEYWELL 922PC06YA-A3N-L SENSOR NEW
Turck Model: Bi15-W30-DAP6X-H1141/F2 Proximity Switch. New Old Stock
Turck Model: Bi2-G08-AP6X-H1341 Proximity Sensor W
Baumer Electric: IFRM 06P15/405873 Proximity Sensor. New Old Stock. No Box
Turck: B8141-0 Socket Connector. Ident: 69049. USA: U6545. New Old Stock
Baumer Electric Model: UNDK 30U9103/S14 Sensor with Analog Output. 0 - 10V
Turck Model: Bi5-G18-AP6X-B1441 Proximity Sensor W
OMRON TL-X1R5B1-GE PROXIMITY SWITCH. New Old Stock
IFM Electronics gmbh Model: E10358 Socket. New Old Stock
Honeywell /Micro Switch 922FS1.5C-A4N Sensing, 2 New
emecanique Model: XB2-M12PA370 Proximity Switch
emecanique Model: XS1-M18MA230K Proximity Switch
Turck:Ni3-G08-AP6X Proximity Sensors, 7.00M
Turck Model: Bi4-M12-AP6X-H1141 Proximity Sensor w/ U2216-0 Cable
Turck Model: Bi4-M12E-AP6X-H1141 Proximity Sensor
Baumer Electric Model: IFRM 12P1701/S14L Proximity Sensor.
Daniel Woodhead CAT. No. 45450-002 Cable, 125V / 3A
Turck Model: Ni8U-S12-AP6X-H1141 Proximity Sensor
Turck: Bi1-HS865-RN6X Proximity Sensor, Ident. 460420
Turck: Bi1-G08K-AP6X Proximity Sensor, Ident. # 46700. New Old Stock
Turck / Escha ID Number: E7167-01, VIS20-1.048-1.048-
Turck / Escha ID Number: E7167, VIS 20-1.048-1.0PSG 3/
Turck Pico Fast ID Number: U0065, P/N: PKG 3Z-2/S90
Turck Model: Ni3-EG08K-AP6X Proximity Sensor * W2
Turck / PicoFast: U2134-19. P/N: PKG 3Z-1.8-PSG 3/S90
Lot of Turck: U0076-4. P/N: PKG 3Z-0.9-PSG 3/S90
Turck / PicoFast: U2134-16. P/N: PKG 3Z-1.2-PSG 3/S90
Turck / PicoFast: U2134-17. P/N: PKG 3Z-1.5-PSG 3/S90
Turck / PicoFast: U0092. P/N: PSG 3-2/S90
Turck Model: Bi2-G12-AP6X/S1005 7M Proximity Sensor
Schunk Model: 370401 two finger parallel gripper * W2
IFM/ Efector Electronic: KIE3015-FPKG, KI5023 Sensor
Honeywell / Sen-Tech: 922FS0.8-A4P-Z925 Sensor
ESEC Part Number: 763.315 Fiber Optic Cable
Visolux Model: LTE 1000-1482/31 Proximity Sensor K
Turck / PicoFast: U2134-15. P/N: PKG 3Z-0.9 PSG 3/S90
Turck / PicoFast: U2383-5, P/N: RK 4T-0.5-PSG 3/S90. New Old Stock
Turck Model: IM1-22Ex-T Isolation Switch Relay. Good Used. W3
