产品中心
8C-TDIL61 (51306967-175)
8C-TDIL61 (51306967-175)
8C-TDIL61 (51306967-175)
苏妙玲:0592-5856292 或 13394057292
QQ:2851195480 www.zxdsolutions.com
-------------------------------------------------------------------
2. 存储器
PLC内的存储器主要用于存放系统程序、用户程序和数据等。
1)系统程序存储器
PLC系统程序决定了PLC的基本功能,该部分程序由PLC制造厂家编写并固化在系统程序存储器中,主要有系统管理程序、用户指令解释程序和功能程序与系统程序调用等部分。
系统管理程序主要控制PLC的运行,使PLC按正确的次序工作;用户指令解释程序将PLC的用户指令转换为机器语言指令,传输到CPU内执行;功能程序与系统程序调用则负责调用不同的功能子程序及其管理程序。
系统程序属于需长期保存的重要数据,所以其存储器采用ROM或EPROM。ROM是只读存储器,该存储器只能读出内容,不能写入内容,ROM具有非易失性,即电源断开后仍能保存已存储的内容。
EPEROM为可电擦除只读存储器,须用紫外线照射芯片上的透镜窗口才能擦除已写入内容,可电擦除可编程只读存储器还有E2PROM、FLASH等。
NUMATICS 152SS400K000030 110-120V 50/60Hz .12AMPS
FAIRCHILD AIR VOLUME BOOSTER PRESSURE REGULATOR MODEL 4500 CAT.
4543
ASCO SOLENOID VALVE 198-216-2-D
PARKER MANIFOLD BLOCK 9450-2003
Ross Double Solenoid Valve W6476B3407
AUTOMATIC VALVE L21-021-AA 7019-9AA
MAC 82A-AC-BAA-TM-DDAP-1DA W/ TM-DDAJ-1DA
SMC Valve VXP2140 .04mpa 1 air water .7 lt oil 24vdc coil VXP2140-
03N-5DZ-B
BELLOFRAM PRESSURE REGULATOR TYPE 70 250 PSIG RANGE 0-10 PSIG
FLUTEC NEEDLE VALVE 5000 PSI DV-12-01 1/5
SMC VALVE SQ1141-5LO-C4
SMC VALVE SQ1141-5LO-C6
HYDRAFORCE EP20-S38
IPEX TRUE UNION BALL VALVE 1/2 VX TUBV CPVC VITON S/T 053042
VXBC203
SMC Pneumatic Valve VT307V-5G-01N 24VDC
EATON OVERLOAD RELAY XT0B1P6CC1 1...1,6 A AMP
ESLON COUPLING SCH80 1-1/4 - 34 CPVC F437
SMC CYLINDER CDQ2WB20-10DC CDQ2WB2010DC CDQ2WB20 10DC
SMC VALVE SYJ514R-5DZ SYJ514R 5DZ SYJ514R5DZ
SMC SLIDE TABLE VALVE MGPM25-20
Numatics Valve 031RD7000
NUMATICS VALVE 33DFR4430 33DFR4000 150PSI
Apollo 161T-LF Bronze
ENGINE SMALL BLOCK ROD BEARINGS CHEVY CONNECTING BEARINGS CR 807AM
STD
Numatics 554SA400K Pneumatic Single Direct Solenoid 2 Pos 4 Way,
237-526B
CEPEX CPX27362
EFECTOR US/5-DC-P/N-ROL-PVC-5M/L E40037 5PIN DC
SMC VALVE CDOSD16-10DM
NUMATICS 152SA400K 120V 50/60Hz .08A
MAC VALVES 225B-531BAAA
NUMATICS VALVE 152SS500K
NUMATICS 226-411B
CLIPPARD MJV-4D
FOXBORO BOOSTER TYPE 20 250 PSI B102RN
CEPEX HAYWARD BALL VALVE, UNIBLOCK 1-1/4 PE
SMC SOLENOID VALVE NVSP4115-0209
NUMATICS VALVE 031SA4004 150 PSI
SMC SOLENOID VALVE CDU20-25D
VGD 1/2 Hey Duty FORGED Steel Cable Wire rope Clamp 1254-M 2907
Newval Fluid 1 1/4 PVC SCH 40 Ball Valve 1 1/4 Slip on
SMC AIR VALVE SYJA512-M5-F
EG&G SEALOL PUMP SEAL ASSEMBLY 5320
NORGREN SHUT OFF VALVE T73E-2AA-P1N
ALLEN BRADLEY FAST RESPONSE DC INPUT MODULE 1771-IT
Newval Fluid 1 PVC SCH 40