IC693CPU341 现货

PROFIBUS协议结构是根据ISO7498国际标准，以OSI作为参考模型的。PROFIBUS-DP定义了第1、2层和用户接口。第3到7层未加描述。用户接口规定了用户及系统以及不同设备可调用的应用功能，并详细说明了各种不同PROFIBUS-DP设备的设备行为。PROFIBUS-FMS定义了第1、2、7层，应用层包括现场总线信息规范（FMS）和低层接口（LLI）。FMS包括了应用协议并向用户提供了可广泛选用的强有力的通信服务；LLI协调不同的通信关系并提供不依赖设备的第2层访问接口。PROFIBUS-PA的数据传输采用扩展的PROFIBUS-DP协议。另外，PA还描述了现场设备行为的PA行规。根据IEC1157-2标准，PA的传输技术可确保其本质性，而且可通过总线给现场设备供电。使用连接器可在DP上扩展PA网络。

ROBERT SIEGEL  RARITIES OF THE WORLD  1987

HALOPHANE PRISMPACK V ONE IN BOX FK2322 101653

METH 300VA INDUSTRIAL CONTROL TRANSFORMER T1UL-F

ROTOR TOOL M54ACYSTTS14  RPM 545 N-M 20.34

APPLETON CONDUIT BODY 2 INCH  C200-M

NICHOLSON  DRAIN-AIR 1-600 PSIG BAR   0.07-42

WARD  BUSHING 2 X 3/4    -

HOFFMAN 90-DEGREE WIREWAY ELBOW  F-44WE90

BEI MOTION SYSTEM ENCODER H25D-SS-180-AB ?400?-LED-EM16-S

TRW 1-3/4" 5N GH7 HS 7-1/8" OAL 6 FLUTE HAND TAP

MARTIN 1 3/8" BORE 13 TOOTH TOLLER  CHAIN SPROCKET 60BS13  IN BOX

THROW BAG 150 FT GNP WEST CST  105651

TD&T 35/64 APPROX 8-1/4" OAL TAPER SHANK  DRILL BIT

1 1/4" TRIANGLE FLANGE BASE

R-K ELECTRONICS INC R-C NETWORK MODEL RCD5G-30

UNKNOWN MFG  1 1/2 X 2" 90 DEGREE ELBOW PIPE FITTING    -

BROWNING  REPL DISC  35D PR

CO  2INCH FLANGE   150PSI

NORGREN NON-RELIEVING PRESSURE REGULATOR REPAIR KIT 5578-02

FESTO 40MM BORE 75MM STROKE PNEUMATIC CYLINDER DKE-40-75-PPV-A

HP LASERJET MAINTENANCE KIT HP C2001-69012K-R

PL CIRCUIT BOARD PWB 105776D STD 7000 7605-1

ALLEN BRADLEY 1494F-NF30 FUSIBLE DISCONNECT SWITCH

HUBBELL CONNECTOR BODY TWIST-LOCK 20A 480VAC 3P4W HBL2433

KIMBLE 5000ML RESERVOIR ASPIRATOR BOTTLE W/ OUTLET 14607 5000 103615

TRUNION FORKLIFT PARTS  CL2373837

BROWNING 1/4 X 1/8 KWY 1-3/16" BORE 31 TOOTH SPROCKET 80B31

ALLEN BRADLEY FULL VOLTAGE MODULE 800E-2DLT3AX11 SER. A

SMC CONNECTOR BOX  EX230-CB2 100833

MILWAUKEE  ROD END CAP / CAP BENT  A-17941-D

LEE SPRING  4"X1" SPRING    LC 0801 12 M

POWER CLAMP GL500-J11F5A1GXG4 102371

CHESTERTON SAFT SIZE 4.500 ROTARY SEAL  891-36 RU CB/S 698856 104489

SMC REGULATOR AR30-N03BG-Z

MAHR FEDERAL MAXUM 3.4V DIGITAL ELECTRONIC INDICATOR DEI-15111-E1

TOYODA HYDRAULIC CYLINDER HC-DAX8-63X100

BELKIN PRO SERIES PS/2 TO AT KEYBOARD ADAPTER F2N018  LOT OF 19

CONDOR PROTECTIVE CLOTHING YELLOW 1N872A SIZE 45IN.X35 IN

DODGE 1610 X 38MM KW TAPER-LOCK BUSHINGS 119605  

PCB CIRCUIT BOARD  343729-F

CHICAGO 29 7/8 " EYE BOLT

THK (2) LINEAR CAGED BALL BEARING GUIDES W/ RAIL SHS25C2QZSS+400L

GE   HEAVY DUTY SAFETY SWITCH  UNKNOWN PART NUMBER

SHOWCASING YOUR STAMP COLLECTION C E FOSTER

DIRECTORY OF ROUTE AGENT ROUTES 1837-1882

PRECISION JOBBER R15 #A HSS BLACK OXIDE 015001 SET OF 12

LUMBERG AUTOMATION ASB2-RKT 4/3-645/0.3M 4 POLE MALE SPLITTER

MERLIN GERIN CIRCUIT BREAKER 277V MULTI 9 C60 D 10A

AB PUSHBUTTON MUSHROOM HEAD RED 800T-D6

SMALLEY RETAINING RING WG-11449-51 -   YSD-87-S17 100663

PIPE TAP HS 6 FLUTE  5" LENGTH