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1、Date:* File:Symbols.1SIMATIC S7 Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and Drives符号Date:* File:Symbols.2SIMATIC S7 Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and Drives目标学习了本章之后，你将 .了解绝对地址和符号地址之间的差别.了解局部符号和全局符号之间的差别.了解符号优先和绝对地址优先之间的差别.能够编辑全局符号表
2、.能够从LAD/STL/FBD编辑器编辑全局符号Date:* File:Symbols.3SIMATIC S7 Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and Drives绝对寻址和符号寻址AI 0.0=Q4.1AI 0.4=Q8.5CallFC18A“T_System_ON“=“L_SYSTEM“A“S_M/A_ModeSelect“=“K_RT“Call“FC_Count“(最多 80 个字符)Symbol AddressData Type CommentK_RTFC_CountT_Syste
3、m_ONL_SYSTEMS_M/A_ModeSelectQ8.5FC18I 0.0Q4.1I 0.4BOOLFC18BOOLBOOLBOOLRun Conveyor Right Count Transported PartsSystem ON Switch, Momentary ContactSystem ON LightOperating Mode Man=0/Auto=1 Selector Switch(最多 24 个字符)Date:* File:Symbols.4SIMATIC S7 Siemens AG 2003. All rights reserved.SITRAIN Trainin
4、g for Automation and Drives局部数据块:块的声明表 程序编辑器 - 块参数 - 局部 /临时数据跳转标号块的代码区程序编辑器符号寻址 - 概述何处使用符号?它们存放在何处? 如何建立它们?全局数据:符号表符号编辑器 - 输入 - 输出 - 位存储器、定时器、计数器 - 外设 I/O数据块组成DB的声明表程序编辑器块名称:符号表符号编辑器 - OB - FB - FC - DB - VAT - UDTDate:* File:Symbols.5SIMATIC S7 Siemens AG 2003. All rights reserved.SITRAIN Training
5、for Automation and Drives符号表双击Date:* File:Symbols.6SIMATIC S7 Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and Drives编辑：查找与替换Date:* File:Symbols.7SIMATIC S7 Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and Drives查看：过滤器Date:* File:Symbols.8SIMATIC S7 Si
6、emens AG 2003. All rights reserved.SITRAIN Training for Automation and Drives查看：排序Date:* File:Symbols.9SIMATIC S7 Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and Drives在 LAD/STL/FBD 编辑器中编辑符号Date:* File:Symbols.10SIMATIC S7 Siemens AG 2003. All rights reserved.SITRAIN Trainin
7、g for Automation and Drives在 LAD/STL/FBD 编辑器中符号信息Date:* File:Symbols.11SIMATIC S7 Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and Drives在 LAD/STL/FBD 编辑器中符号选择Date:* File:Symbols.12SIMATIC S7 Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and Drives：为Con
8、veyor Model建立符号表Date:* File:Symbols.13SIMATIC S7 Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and Drives如果你想知道更多Date:* File:Symbols.14SIMATIC S7 Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and Drives符号表：导出要把表存到何处 ?把表存成何种格式?Date:* File:Symbols.15SIMATI
9、C S7 Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and Drives符号表：导入这里选择目录路径输入文件名选择格式Date:* File:Symbols.16SIMATIC S7 Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and Drives“符号优先“优先： 绝对地址优先： 符号Symbol TableOld Entry: System ON = Q8.0New Entry: System ON = Q4.0
