1756-PSCA2
很多人对Siemens的Work Memory和Load Memory不清楚有何区别，现初步区分一下，希望能对刚入门的朋友有所帮助。
Work Memory是RAM，是程序被执行的地方，如同PC机中的内存条一样，Work Memory的大小影响程序的处理速度，CPU模块的指令处理速度一样，但Work Memory大的CPU处理速度回快，另外Work Memory一般是不可扩展的，各个CPU是固定的，随着CPU型号越高档Work Memory区域一般就越大。
Load Memory可以是FEEPROM（S7-300的MMC卡、S7-400的FLASH卡)，如同PC机中的硬盘，也可以是RAM(S7-400的内置RAM或扩展RAM卡),是程序装载的地方，是可扩展的。
程序从Load Memory拷贝到Work Memory后被执行。

公司名称：厦门润星贸易有限公司

联系人：吴伟杰

QQ：2722616984  E-mail:2722616984@qq.com

电话：0592-6895320 手机：18030263579 
传真：0592-6034581
0.1-10Gohm 0,05% Resistance standard resistor P4067 an-g of LEEDS & NORTHRUP ESI
0.1-1111mkH 1% Decade inductance  inductor standard set P594 an-g GR,L&N,IET
0.1-1250 µm LPA-9Z Desktop Inbligent Laser Particle Size Analyzer Sizer
0.1-2000 µm LPA-2000 Inbligent Laser Particle Size Analyzer Sizer
0.15-1000V,0.1-300A 0,2 Ammeter&Voltmeter Verification kit Y300 an-g FLUKE HP
0.1-716 µm LPA-9S Desktop Fully Automatic Laser Particle Size Analyzer Sizer
0.1Hz-1500MHz Frequency meter electronic counter CH3-63/1 an-g Agilent HP
0.1MHz-1020MHz High Frequency Signal Generator G4-176 analog Noisecom Anritsu HP
0.1mkV-10V 0.02% DC Calibrator Programable P327 an-g of FLUKE,Agilent,Tektronix
0.2-2100 kHz Measuring and switching remote control panel P-326-4
0.250" x 25" Vamco Servo Feeder Model: CFS-30II S/N: HDC42530PVPCL13
0.5% Current & Voltage transbers calibrator meter K507 an-g Agilent
00084 Accu-sort Bar code scanning kit
0010-03338 ASSY HEATER 8" SR OSCR WXZ
0010-03344 HEATER, ASSY, 8" JLT .029 AMJ WXZ
0010-03368 ASSY HEATER 8" NHT .029 NCSR OSCR WXZ
0010-03370 ASSY HEATER 8" NLT-NT .029 OSCR WXZ
0010-03371 ASSY HEATER 8" J 390 .029 NCSR OSCR WXZ
0010-09187 wASY MINICONTROL
0010-11997 Assy., Heater, TxZ, 200mm SNNF
0010-20098 CHASSIS ASSY, SHIELD TREATMENT
0010-21788 Magnet
0010-70000 AMAT wASY MINICONTROL.TEOS OP
0010-76036 ASSY MINI CONTROLLER W/TEOS OPTION VERSI
0020-23906 6" G-12 TIN W/B CLAMP RING
0020-27275 CLAMP RING,COH Ti/TiN POISON HI-PWR,SNNF
0020-27712 CLAMP RING 6" JMF PADDED HOT AL HTHU
0020-28434 CLAMP RING 8' JMF TI PVD DEGAS HTHU BUFF0020-28434
0020-29125 Shield 8" TiW 13" Source Al Arc Sprayed
0020-39001 - VALVE, Throttle PLUNGER
0021-21589 CLAMP RING, 8" SNNF, PADDED, MASKS HTHU
003310 A/B SIEMENS TYP: 03311-A NR. 331346 GE548201.0002.00 IN STOCK AT DUBAI
00415 GE IC640MWS902A Demo Unit
0070201A 5913929A, 5913894A Grossenbacher KEYBOARD INTERFACE CARD A8550
01 MOELLER PLC PS4-201-MM1 good in condition for industry use
0-10GOhm 0.1% Decade resistance  resistor P40103 an-g GR L&N ESI IET GR
0-10kv Electrical insulation Dielectric strength Tester Meter YPY-10 ang Agilent
0-150kHz Frequency meter 101kHz controler field chanel measurement 32kHz P321M
0-150MHz Amplitude frequency characteristics meter analyzer X1-54 an-g Agilent
0-17.85GHz 0.01–20Watt Watt meter power wattmeter M3-56 an-g Agilent HP
0190-09379 wPCB ASSY VME CPU SYNERGY UPGRADED
01dB SIP95 Sound Level Logging Meter FFT Audio Analyzer
0-1GOhm,0-1000Volt,0-1000Amper Meter Multimeter SHCH300 an-g.HP,Fluke,Agilent
01KA509430 RELIANCE DC MOTORS 
0-2.14GHz 3.5/1.52 mm Panoramic wave coefficient meter P2-106 an-g Agilent
0-2000 mkVb 1% Micro flux meter Veber meter F191 an-g. Agilent
0200-36686 Ring single Low profile 200mm JMF CER
0300A-4NAN-0006 REULAND AC SERVO SPINDLE 
0300P-4NAN-0001 REULAND AC SERVO SPINDLE 
0-30kV Electrostatic Kilovoltmeter AC/DC 14MHz C197 an-g Fluke HP,Agilent,GR
03101-08-256N ARGUS ELECTRONIC COMPONENTS REMANUFACTURED
03400 SIEMENS TYP 03400-A NR.340884 GE.548 184.0001.00 (SINUMERIK 3T)-AT DUBAI
0-49009-14
0-49011-1 RELIANCE PLC MODULES REMANUFACTURED
0-49015-A
0-49020-2
0-49040-2
0-51828 RELIANCE ELECTRIC NDIA CARD 051828
0-51851
0-51879-5 PRL GATE AMP PGAF
0-51901
0-52002-3
05-24-02-00 HASS LASER POWER SUPPLY REMANUFACTURED
0-52854
0-57050-
0-57404-2B
0-57408-C
0-57409-C
0-57411-2E
0-57413-E
0-58706-4
08114-66504 Power supply unit for Agilent / HP 8114A Pulse Generator
08114-66505 PCB for Agilent / HP 8114A Pulse Generator
08114-66506 PCB for Agilent / HP 8114A Pulse Generator
08-500-108-00-5 Allis Chalmers Impeller
08568-60118