1756-CNBR 1756-CNBR1756-CNBR 1756-CNBR
当PLC的用户程序要保留在RAM中时，就会用到电池，电池通常是3V或3.6V的不可充电的锂电池，电池的使用寿命通常是五年左右，电池用久了，电压就会下降，当其下降到不足以保证RAM中数据时，RAM中的程序就会丢失。如果用户没有备份程序，就会相当麻烦。[1]
一般PLC内部设有电池电压检测电路，当电压下降到一定程度时，PLC就会报警，提醒更换电池。PLC的使用说明书都有提供更换电池的方法。一般来 说，PLC在断电后，因为PLC上RAM电源端接有充电电容，即使把电池去掉，电容上充电电量也足够RAM内的数据保持一段时间，所以如果取掉电池后在短 时间内（通常5分钟）再将新电池换上去，数据是不会丢失的。
但用户实际使用PLC的环境情况不尽相同，例如电容的容量下降，RAM电源回路有 灰尘、油泥等形成放电回路等，这会加快PLC断电后电容的放电速度，从而使时间不好把握。如果在带电的情况下更换电池就可保程序*。因为电源始终会 有电压加在RAM芯片的电源脚。当然更换时亦要小心应对，注意电池的极性以及避免短路情况发生。
是把PLC通电15分钟（给内部电容充电），断电，在5分钟内换好新的电池，再上电试一下。
西门子PLC有带卡的，有不带电池的；也有带卡的，带电池的。程序存在MMC卡中，如果没有存储卡，需要电池保存程序的，更换电池时候务必注意，带电的情况下，将旧电池取出来，然后将新电池换上即可。
AMAT 0010-77241 CONTROL PANEL , USED
AMAT 0190-11497 BOTTOM BASE, DI WATER SYSTEM, CMP , USED
AMAT 0010-77426 ASSY TOP MANIFOLD DI WATER , USED
AMAT 0010-77312 ASSY, VALVES ROBOT & PEDESTAL PNEUMATIC , USED
AMAT 0010-77348 ASSY WATER TRAP PEDESTAL VACUUM , USED
AMAT 0660-00669 DISK DRIVE FLOPPY 3-1/2" 720K/1.44MB BE , USED
AMAT 0240-52216 KIT, SMOKE DETECTOR FOR MIRRA CMP , USED
AMAT 0010-35249 ASSY, XFMR ENCLOSURE 208V , USED
AMAT 0090-01021 HARNESS, IM, 300MM, WALKING BEAM, WAFER , USED
AMAT 0021-16083 BAFFLE, 300MM , USED
AMAT 3700-01091 ORING ID 20.000 CSD .210 VITON 75DURO BLK , NEW
AMAT 0270-03499 PEEK OTF CALIBRATION SPINDLE , NEW
AMAT 3300-02682 FTG NIP QDISC 1/4BODY X 1/4-18FP 1.52"L SST303 , NEW
AMAT 1330-01035 TIE INDENT W/FLAG MINI BLU MS3368-5-E , NEW
AMAT 3700-01227 ORING ID 1.799 CSD 103 VITON 75 DURO BLK , NEW
TOKYO ELECTRON 2184-020011-11 MC-311097 Omron B7A-T6D7-T, USED
TOKYO ELECTRON 1181-000876-11 PCB. I/F TTLE06-11 POWER BD PCB, USED
TOKYO ELECTRON 1181-000866-11 PCB. I/F TTLS05-11 MMI-INTFC PCB, USED
TOKYO ELECTRON 1181-000877-11 PCB. I/F TTLE07-11 ISOREP-BD PCB, USED
TS-4000Z PANEL PANEL, POWER AC100V 3A 50/60Hz, WORKING
AMAT 0020-08673 SHIELD, INNER, AL ARC-SPRAY SST, SIPM NEW
SMC VNB114B process Valve,USED
AMAT 0100-20027 PCB ASSY, CONTACTOR INTERLOCK , NEW
AMAT 0200-04118 ISOLATOR, CERAMIC, BLOK-CUST SPECIFIED , NEW
AMAT 0041-05327 RETAINING RING COMPOSITE 8 TITAN HEAD, NEW
AMAT 1040-01012 wMETER, SENSOR 10VDC , NEW
USHIO DXW 120v-1000WC5 Halogen Lamps,NEW
AMAT 0190-07314 POWER SUPPLY, HEAT EXCHANGER, MEGASONIC, USED
AMAT 0021-03568 FACEPLATE 200MM SACVD PRODUCER , NEW
AMAT 0020-75873 HOOP, 8 HTHU HEATER , NEW
AMAT 0021-27155 CHAMBER LINER RIGHT YTTRIUM COATING PROD , NEW
Fujikin Type N.C.0.34-0.49MPa 316L StainlessSteel Pneumatic Dual Diaphragm ValVe
AMAT 0040-32449 LID,PUMPING PLATE,TEAOS,GIGA-FILL SACVD , NEW
AMAT 0020-79255 COVER, HOUSING , USED
MILLIPORE WGMXMBRR4 HIGH FLOW TEFLON FILTER, USED
AMAT 0040-06170 ADAPTOR, LOWER, SIP-TA, WB CHAMBER , NEW
AMAT 0200-09072 SHIELD, 200MM , NEW
TKD ZRAC2203-11 NOISE FILTER 250V, USED
AMAT 0242-24504 KIT, CONTROLLER TEST TOOLS, DSM & 5.3 FI , NEW
AMAT 0240-28181 KIT, HEATER INSTALLATION, BESC , NEW
AMAT 3030-05714 Tylan FC-2950 Mass Flow Controller,WORKING
AMAT 0240-03004 KIT WATER SIP-CU UPPER ADAPTER , NEW
AMAT 0040-48030 LINER, TOP, TICL4 TIN , NEW
RIKEN KEIKI GD-F24 Tokyo Electron GAS EDTECTOR SENSOR, USED
Sun Microsystems 501-6635-06 Dual Gigabit Ethernet SCSI Network Adapter Card
AMAT 0200-35612 PLUG GAS FEED TXZ , NEW
FAIRCHILD TT7800-002 TRANSDUCER, TERMINAL BLOCK,WORKING
AMAT 0021-11110 RING EDGE ALUMINUM, SST HEATER TXZ 300MM , NEW
CB631S-10-M1 AMP RELAY MODULE, RELAY ALARM CABLE, USED
AMAT 0040-09733, 0150-09901 ENCLOSURE AC BOX OZONATOR, CABLE , USED
KEYENCE AP-33PA Main Unit, Positive-pressure Type, 1 Mpa, PNP, USED
AMAT 0240-05877 KIT, SOURCE SIP, RF EMISSIONS SHIELD , NEW
AMAT 0190-07312 AMPLIFIER, MEGASONIC, 200 MM SYSTEM, NRTL COMPLIANT , USED
RORZE CURR-4426-1 ROBOT CONTROLLER , USED
AMAT 0021-22177 COVER RING, ADV. 101 300MM PVD , NEW
AMAT 0040-02520 GAS BOX, SILANE, 200MM PRODUCER, Qualified 2ND NEW
AMAT 0140-78466 CABLE ASSY, UPPER ELEC/CHEMICAL FACILITY, WORKING
OLYMPUS BX-UCB CONTROL BOX , USED
AMAT 0020-02348 CLAMP, LOWER SHIELD, 300MM SIP , NEW
AMAT 0140-78040 CABLE, SENSOR-CONTROL, BLKHD 2, SRD, WORKING
AMAT 0090-77325 HARNESS, SWITCH, CHEM FLOW, BRUSH LDM, NEW
AMAT 0190-24854 MKS REV3.0 G4 PLUS 4-PORT UPA 300MM REFL , REFURBISHED
Kitz 316 Stainless Steel Valve 3/8" NPT 30K-3/8 Swagelok Parker,USED
AMAT 0021-12555 SHIELD UPPER LIFTABLE SHORT PVD , NEW
AMAT 0195-03995 146GB HARD DRIVE , NEW
HAYASHI LA-150FBU LUMINAR ACE , USED
ALLEN BRADLEY 4409-M18001 GUARD INVERTER
AMAT 0190-23229 SPECIFICATION, CB, X346 IBM E-SERVER DUA , NEW
NOVELLUS 27-262408-00 Controller, IOC, Firmware Ver. 4.20, NEW
NOVELLUS 15-150002-00 RING, GUARD, LTM, HDP300 , NEW
AMAT 0020-34775 BLOCKER, PERF,SILOX 8,UNIV CH,NON-STEPP , NEW
AMAT 3700-02321 SEAL CTR RING ASSY ISO250 W/VITON , NEW
AMAT 0020-10117 PLATE, PERFORATED OX 200MM TEOS , NEW
OMRON DRT2-ID16 XWT-ID16 OMRON DRT2-ID16 XWT-OD16 REMOTE TERMINAL 4 units,USED
Fuji CP32E/5 5A/1000A 250v Circuit Breaker, used
PENINSULA CONTROL PANELS 48657-00 HEATER CONTROLLER , USED
GENERAL ELECTRIC 9650-128 MINI PROTOCOL CONVERTER. 128K MEMORY
TS-4000Z PLASMA DISPLAY UNIT, WORKING
AMAT 0021-19342 SHIELD INNER 300MM PCII/RPC+ , NEW
SIEMENS 6ES5-422-8MA11 DIGITAL INPUT MODULE
AMAT 0820-90100 SENSOR. LIQUID LEVEL, CAPACITIVE. 4.5'' ES-SP-120 , NEW
AMAT 0020-48304 CLAMP RING, LOWER SHIELD, SST WITH CLEAN , NEW
AMAT 0010-30419 Z Heater 8" Assembly, NEW
AMAT 0020-29343 SHLELD, CLAMP DARKSPACE, NEW
AMAT 0200-00403 ISOLATOR PUMPING RING, MIDDLE, PRODUCER, NEW
AMAT 3870-04338 VALVE ASSY SLIT DBL ACT ACTUATOR 35X336, NEW
AMAT 0020-08299 CLAMP, INNER SHIELD, 300MM SIP , NEW
AMAT 0020-30447 PLATE,BLOCKER SX 6 IN , NEW
AMAT 0140-78535 CABLE IM SENSOR-CNTRL, BLKHD 2 SYSTEM, WORKING
AMAT 0820-90081 SENSOR. LIQUID LEVEL, CAPACITIVE. 4.5" ES-SP-119 , NEW
ASTex Astron AX7651 REMOTE PLASMA SOURCE GENERATOR, WORKING
AMAT 0140-05085 CABLE X-CAR, MOTORS MNFRM BKHD, PWR, WORKING
AMAT 0020-25077 SHIELD LOWER 8 101 G-12 SST , NEW
AMAT 0140-02781 CABLE SYSTEM INTERLOCK SYSTEM, 300MM 36, WORKING
AMAT 0195-01644 LCWE/PNEUMATIC BOX ASSEMBLY/300MM , USED
PALL CORPORATION T93030300010 VCSC100-04M3F 300
