块结构和块编辑(7)

1、Date:2021-12-13File:Blocks.1SIMATIC S7Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and Drives块结构和块编辑块结构和块编辑OB 1FBFCFBFBFBFBFCFBFCDate:2021-12-13File:Blocks.2SIMATIC S7Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and Drives目标学习了本章之后，你将学习了本章之后，你将 .了解不同类型

2、的S7块.懂得“结构化编程”的原理 .了解过程映像的意义(PII, PIQ).能够解释循环程序执行的原理.了解并能够选择STEP7编程语言 - LAD, FBD 和 STL .能够使用LAD/STL/FBD编辑器编辑、存盘并下装S7逻辑块到CPU.能够用“块监视”测试功能进行简单程序调试.能够设置LAD/STL/FBD编辑器Date:2021-12-13File:Blocks.3SIMATIC S7Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and Drives故障 OB组织块组织块循环定时过程程序块

3、类型程序块类型操作系统FCSFCFB 带背景数据块图例:OB = 组织块FB = 功能块FC = 功能SFB = 系统功能块SFC = 系统功能 DB= 数据块FBFCFBFBDBDBSFB最大嵌套深度:S7-300:8(16对CPU 318)S7-400:24(2 至 4 个附加级给故障 OB, 对每一个优先级)Date:2021-12-13File:Blocks.4SIMATIC S7Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and Drives程序结构程序结构分块程序分块程序结构化程序结构化程

4、序所有的指令都放在一个块中 (通常是组织块OB 1) 单一功能的指令放在单一的块中，OB1调用这些单独的块可重复使用的功能装入单个块中，OB 1 (或其他块) 调用这些块并传递相关数据。OB 1OB 1Recipe ARecipe BMixerOutletOB 1PumpOutlet线性化程序线性化程序Date:2021-12-13File:Blocks.5SIMATIC S7Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and Drives过程映象过程映象字节 0字节 1字节 2:CPU存储器区字节

5、0字节 1字节 2: PIIPIQ 用户程序CPU存储器区 : :A I2.0= Q4.3 : : : :11Date:2021-12-13File:Blocks.6SIMATIC S7Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and Drives循环程序执行循环程序执行执行OB1中的程序 (循环执行)事件 (日期时间中断、硬件中断等) 调用其他 OB，FB，FC输出模块A I 0.1A I 0.2= Q4.0块OB 1循环监视时间的开始启动块 (OB 100)上电后执行一次从模块读信号状态，并保存

6、到过程映象区 (PII)把过程映象输出表(PIQ) 写到输出模块CPU 循环循环输入模块Date:2021-12-13File:Blocks.7SIMATIC S7Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and Drives插入插入S7 S7 块块Date:2021-12-13File:Blocks.8SIMATIC S7Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and DrivesLAD/STL/FB

7、D编辑器编辑器声明表声明表代码部分代码部分细节窗口细节窗口Date:2021-12-13File:Blocks.9SIMATIC S7Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and DrivesSTEP7 编程语言编程语言AI 0.0AI 0.1= Q8.0STL&Q8.0=I 0.0I 0.1FBDI 0.0I 0.1Q8.0LADDate:2021-12-13File:Blocks.10SIMATIC S7Siemens AG 2003. All rights reserved.SIT

8、RAIN Training for Automation and Drives选择编程语言选择编程语言Date:2021-12-13File:Blocks.11SIMATIC S7Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and Drives用用 LAD/FBD 编程编程Date:2021-12-13File:Blocks.12SIMATIC S7Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and Driv

9、es用用 STL 编程编程Date:2021-12-13File:Blocks.13SIMATIC S7Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and Drives块的保存块的保存带有块名称的当前项目路径Date:2021-12-13File:Blocks.14SIMATIC S7Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and Drives在在OB1中调用块中调用块Date:2021-12-13Fil

10、e:Blocks.15SIMATIC S7Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and Drives下载块到下载块到 PLC Date:2021-12-13File:Blocks.16SIMATIC S7Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and Drives简单程序调试简单程序调试Date:2021-12-13File:Blocks.17SIMATIC S7Siemens AG 2003. A

11、ll rights reserved.SITRAIN Training for Automation and Drives下载和保存修改的块下载和保存修改的块打开在线保存下载打开离线Date:2021-12-13File:Blocks.18SIMATIC S7Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and Drives练习练习: 电机点动电机点动 (FC 16)Date:2021-12-13File:Blocks.19SIMATIC S7Siemens AG 2003. All rights re

12、served.SITRAIN Training for Automation and Drives练习练习:在在 OB 1中调用中调用 FC 16Date:2021-12-13File:Blocks.20SIMATIC S7Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and Drives编辑器用户设置：编辑器用户设置：“General”标签标签Date:2021-12-13File:Blocks.21SIMATIC S7Siemens AG 2003. All rights reserved.SITR

13、AIN Training for Automation and Drives编辑器用户设置：编辑器用户设置：“View”标签标签Date:2021-12-13File:Blocks.22SIMATIC S7Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and Drives编辑器用户设置：编辑器用户设置：“STL”标签标签Date:2021-12-13File:Blocks.23SIMATIC S7Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and Drives编辑器用户设置：编辑器用户设置：“LAD/FBD”标签标签Date:2021-12-13File:Blocks.24SIMATIC S7Siemens AG 2003. All rights reserved.SITRAIN Training