EMERSON 5X00497G01

编程指令：指令是PLC被告知要做什么，以及怎样去做的代码或符号。从本质上讲，指令只是一些二进制代码，这点PLC与普通的计算机是完全相同的。同时5X00497G01也有编译系统，它可以把一些文字符号或图形符号编译成机器码，所以用户看到的PLC指令一般不是机器码而是文字代码，或图形符号。常用的助记符语句用英文文字（可用多国文字）的缩写及数字代表各相应指令。常用的图形符号即梯形图，它类似于电气原理图是符号，易为电气工作人员所接受。 

 5X00497G01指令系统：一个PLC所具有的指令的全体称为该PLC的指令系统。它包含着指令的多少，各指令都能干什么事，代表着PLC的功能和性能。一般讲，功能强、性能好的PLC，其指令系统必然丰富，所能干的事也就多。我们在编程之前必须弄清PLC的指令系统 

 5X00497G01程序：PLC指令的有序集合，PLC运行它，可进行相应的工作，当然，这里的程序是指PLC的用户程序。用户程序一般由用户设计，PLC的厂家或代销商不提供。用语句表达的程序不大直观，可读性差，特别是较复杂的程序，更难读，所以多数程序用梯形图表达。 

Programming instruction: instruction is the code or symbol that PLC is told what to do and how to do it. In essence, instructions are only binary codes, which is exactly the same as that of ordinary computers. At the same time, 5x00497g01 also has a compilation system, which can compile some text symbols or graphic symbols into machine code, so the PLC instructions seen by users are generally not machine code, but text code or graphic symbols. Commonly used mnemonic sentences use abbreviations and numbers of English words (multi-national words can be used) to represent the corresponding instructions. The commonly used graphic symbol is ladder diagram, which is similar to electrical schematic diagram and is a symbol, 5x00497g01 which is easy to be accepted by electrical workers.

5x00497g01 instruction system: all the instructions of a PLC are called the instruction system of the PLC. It contains the number of instructions and what each instruction can do, which represents the function and perbbbbance of PLC. Generally speaking, the PLC with strong function and good perbbbbance must have rich instruction system and can do more things. We must understand the instruction system of PLC before programming

3481   TRCONEX  
PFTL101B-2.0KN  
MVME5100 
康士伯  RCU510，RCU502…… RCU501，RCU500，RDIOR400，RAIC400，RDIOR420，SPBUS-HUB，RMP420，RMP201-8，RMP200-8，RSER200-4    
TRICONEX 3381  
IS215UCVGH1A   IS415UCVGH1A    IS200UCVGH1A  
PTQ-PDPMV1   
VMIACC-5595-208
VMIACC-5595
ACC-5595-208
ACC-5595     
GE  HYDRAN M2     
D136-001-007
IC697CPM790   
UTNH23A   
PR6423/010-010+CON021 PR6424/010-010+CON021 PR6426/010-014+CON021 PR6423/014-010+CON021 PR6423/011-010+CON021 PR6423/014-040+CON021
ppd115 ABB   
PPD113  
MVME5100
ABB PP836
EP3-E-4-A 阿尔斯通控制器    
DSDP140B   
DSAI130D  
ENI  GHW-12Z 
ELAU  ISH100/30025/0/0/00/0/00/01/00 
TMC420  
BENNING 46393 
MMS3120/022-100  
DSAI130D  
ABB 57160001-ACX   DSDP140B  
BCU-02  BIOC-01 
3500/42-01-01 3500/60-05-01 3500/70-01-01 3500/721-01-00
2UBA002322R0001 GDD471A001   
P-HA-RPS-32000000和P-HA-RPS-32200000
ZYGO 7714