型号:125760-01
品牌:BENTLY NEVADA
根据存放信息的性质不同,在PLC中常使用以下类型的存储器:
1.只读存储器(ROM)。只读存储器中的内容由PLC制造厂家写入,并永久固化,PLC掉电后,ROM中内容不会丢失。用户只能读取,不能改写。因此ROM常用于存放系统程序,系统程序具有开机自检、键盘输入处理、用户程序翻译、信息传递、工作方式选择等功能。
2.随机存储器(RAM)。随机存储器又称为可读写存储器。信息读出时,RAM中的内容保持不变;写入时,新写入的信息覆盖原来的内容。它用来存放既要读出,又要经常修改的内容。因此RAM常用于存人用户程序、逻辑变量和其他一些信息。掉电后,RAM中的内容不再保留,为了防止掉电后RAM中的内容丢失,PLC使用锂电池作为RAM的备用电源,在PLC掉电后,RAM由电池供电,保持存储在RAM中的信息不消失。
3.可擦写、可编程只读存储器(EPROM、EEPROM),EPROM是只读存储器,失电后,写入的信息不丢失,但要改写信息时,必须先用紫外线擦除原信息,才能重新改写。一些小型的PLC厂家也常将系统程序驻留在EPROM中,用户调试好的应用程序也可固化在EPROM中。EEPROM也是只读存储器,不同的是写入的信息需用一个较高的电压擦除。
According to the nature of the stored information,the following types of memories are often used in PLC:
1.Read only memory(ROM).The contents in the read-only memory are written by the PLC manufacturer and permanently solidified.After the PLC is powered off,the contents in the ROM will not be lost.Users can only read and cannot overwrite.Therefore,ROM is often used to store system programs.The system programs have functions such as power on self-test,keyboard input processing,user program translation,information transmission,and working mode selection.
2.Random Access Memory(RAM).Random access memory is also called read-write memory.When the information is read out,the contents in RAM remain unchanged;When writing,the newly written information overwrites the original content.It is used to store content that needs to be read and frequently modified.Therefore,RAM is often used to store user programs,logical variables and other information.After power failure,the contents in RAM are no longer retained.In order to prevent the loss of the contents in RAM after power failure,the PLC uses lithium battery as the backup power supply of RAM.After the PLC is powered off,RAM is powered by the battery,and the information stored in RAM remains unchanged.
3.Erasable and programmable read only memory(EPROM,EEPROM).EPROM is a read-only memory.After power loss,the written information will not be lost.However,if the information needs to be rewritten,the original information must be erased with ultraviolet light before rewriting.Some small PLC manufacturers also often host system programs in EPROM,and user debugged applications can also be solidified in EPROM.EEPROM is also a read-only memory.The difference is that the written information needs to be erased with a higher voltage.
→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→→
联系人:乔经理电话:13313430922(微信同号)QQ:748141623
为何我公司许多产品的价格更有优势?
(1)源头采购,减少中间环节差价
(2)渠道稳定,货源更有保障
货期问题
(1)库存现货产品,签订合同付款后,当天即可安排发货
(2)订货产品,根据报价货期发货
山西润盛秉承“备件备件供应链提升价值”的企业理念,
针对备件购买程序简单,保证以的度送达现场,帮助用户程度地降低因备件短缺而带来的停机风险
提供紧急备件支持服务品种齐全,可用户定制备件储备备件质量可靠,所提供的备件全部享受1年超长质保
现货库存,响应速度快减少用户资本投入,提高备件利用率备件置换!
→→→→→→→→→→→→→→→→→→→→→→→→→→→
——————偏门的备品备件联系我们——————
——————冷门的备品备件联系我们——————
——————停产的备品备件联系我们—————
不赚钱只销售服务到位追求信誉
以质量得市场!
用诚信铸就品牌!
低于行业超低价!
欢迎来电咨询,我们将会给您优质的服务!
只要是您想要的,我能帮您找到,价格从优!
下面是我公司的优势产品(日常用的最多)还有不常用的未列出,但都有做的)欢迎您的咨询!
现货供应库存充足
★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★
我们会让时间证明,您的选择没有错!
我们会用诚心的服务换取您200%的满意
高品质低价格现货提供您的满意是我们为之努力的目标
首次合作客户,订货前可提供资质及近销售开出的票据扫描件以供查询。
售后问题:按照品牌所属生产厂家标准执行,保证售后服务,所有产品一年质保等
★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★
全新现货,库存充足
低价清仓,先到先得
质保一年,竭诚售后
主营
①Allen-Bradley(美国AB)
②Schneider(施耐德电气)
③General electric(通用电气)
④Westinghoue(美国西屋)
⑤SIEMENS(西门子系列产品)》
⑥销售ABB Robots.FANUC RobotSKAWA Robots、KUKA Robots、
⑦Westinguse(西屋)
⑧Invensys Foxboro(福克斯波罗):I/A Series系统,FBM(现场输入/输出模块),Invensys Triconex
⑨Siemens(西门子):Siemens MOORE,Siemens Simatic C1,Siemens数控系统等。
⑩Bosch Rexroth(博世力士乐
runsheng Automation提供控制系统零部件,产品服务于用户安装的控制系统。集散控制系统,可编程控制器,面板控制器和驱动器,我们提供快捷方便备件供应,在全球供应超过65个不同的国家。
我们服务的标准,降低客户的停机时间以及维护成本,减少所有的工业机械和生产设备运行故障,延长控制系统的寿命!