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1、功能和功能块SIMATIC S7Siemens AG 2003. All rights reserved.Date:2018/9/30File:FCFBs.1SITRAIN Training for Automation and Drives目标学习了本章之后，你将 .熟悉可赋值参数的块的用途.能够编程可赋值参数的功能和它们的调用.了解功能(FC)和功能块(FB)之间的差别.熟悉静态变量的用途.能够声明静态变量并在程序中使用.能够编程可赋值参数的功能块和它们的调用SIMATIC S7Siemens AG 2003. All rights reserved.Date:2018/9/30File:
2、FCFBs.2SITRAIN Training for Automation and Drives变量概述 PII / PIQ I/ O M / T / C DB 区全局变量/数据(在全部程序中有效)局部变量 / 数据(只在一个块中有效)临时变量 当相关块执行完毕后被清除 临时存储在 L stack中 可在下列块中使用OB / FC / FB静态变量 当相关块执行完毕后仍然保留 永久存储在DB中 只能在FB中使用绝对地址符号地址访问方式SIMATIC S7Siemens AG 2003. All rights reserved.Date:2018/9/30File:FCFBs.3SITRAIN
3、 Training for Automation and Drives示例：用输出 LED故障信息指示Fault_SignalAcknowledgeStored_FaultDisplay要求AcknowledgeStored_FaultFlash_FrequencyDisplayFault_SignalEdge_MemoryPFault_SignalStored_Fault解决方案SRRSQSIMATIC S7Siemens AG 2003. All rights reserved.Date:2018/9/30File:FCFBs.4SITRAIN Training for Automatio
4、n and Drives可以分配参数的块不可以分配参数的块可以分配参数的块FC 20 的 STL程序调用FC 20 (e.g. in OB 1)1.140.05.1AN M=QI10.3M1.040.01.140.140.040.0MMSA) A O AA( AIRMAI FP M形式参数M 40.1I 1.0M 10.3M 40.0Q 5.1I 1.3FC 20Edge_MemoryAcknowledge Flash_freqStored_FaultDisplayFault_Signal实际参数AN #Stored_Fault=#Display#Flash_Freq.#Fault_Signa
5、l#Stored_Fault#Stored_FaultSA) A O AA(A#Acknowledge R#Stored_Fault A#Fault_Signal FP #Edge_MemorySIMATIC S7Siemens AG 2003. All rights reserved.Date:2018/9/30File:FCFBs.5SITRAIN Training for Automation and Drives形式参数图形显示使用方法定义参数类型定义FC 20形式参数输入参数输出参数输入/输出 参数inoutIn_out只能读只能写可读/可写在块的左侧在块的右侧在块的左侧SIMATI
6、C S7Siemens AG 2003. All rights reserved.Date:2018/9/30File:FCFBs.6SITRAIN Training for Automation and Drives编辑可以分配参数的块SIMATIC S7Siemens AG 2003. All rights reserved.Date:2018/9/30File:FCFBs.7SITRAIN Training for Automation and Drives调用可以分配参数的块SIMATIC S7Siemens AG 2003. All rights reserved.Date:2018
7、/9/30File:FCFBs.8SITRAIN Training for Automation and Drives练习: 编辑可以分配参数的FC块SIMATIC S7Siemens AG 2003. All rights reserved.Date:2018/9/30File:FCFBs.9SITRAIN Training for Automation and Drives第一次调用FC20时的参数分配练习:调用可以分配参数的FC块第二次调用FC20时的参数分配SIMATIC S7Siemens AG 2003. All rights reserved.Date:2018/9/30File
8、:FCFBs.10SITRAIN Training for Automation and Drives功能块 ( FB )OB 1DB 2FB 20ENFault_Signal AcknowledgeDisplay Flash_FrequencyENOFB块的变量声明表SIMATIC S7Siemens AG 2003. All rights reserved.Date:2018/9/30File:FCFBs.11SITRAIN Training for Automation and Drives用功能块实现的故障信息显示FB的声明表背景数据块SIMATIC S7Siemens AG 2003
9、. All rights reserved.Date:2018/9/30File:FCFBs.12SITRAIN Training for Automation and Drives生成背景数据块1. 在FB调用时生成背景数据块 2. 创建一个新的背景数据块在 LAD/STL/FBD Editor在 SIMATIC ManagerSIMATIC S7Siemens AG 2003. All rights reserved.Date:2018/9/30File:FCFBs.13SITRAIN Training for Automation and Drives练习: 编辑功能块SIMATIC S
10、7Siemens AG 2003. All rights reserved.Date:2018/9/30File:FCFBs.14SITRAIN Training for Automation and Drives练习:调用功能块并测试之前之后SIMATIC S7Siemens AG 2003. All rights reserved.Date:2018/9/30File:FCFBs.15SITRAIN Training for Automation and Drives之后插入/删除块的参数Adding a parameterSIMATIC S7Siemens AG 2003. All ri
11、ghts reserved.Date:2018/9/30File:FCFBs.16SITRAIN Training for Automation and Drives检查块的一致性SIMATIC S7Siemens AG 2003. All rights reserved.Date:2018/9/30File:FCFBs.17SITRAIN Training for Automation and Drives调用被修改过的块时应做的更正单击鼠标右键SIMATIC S7Siemens AG 2003. All rights reserved.Date:2018/9/30File:FCFBs.18
12、SITRAIN Training for Automation and Drives比较: 功能和功能块特性FCFB静态变量-X变量的初始值-X需要背景数据块-X当被调用时必须使用所有的实际参数X-SIMATIC S7Siemens AG 2003. All rights reserved.Date:2018/9/30File:FCFBs.19SITRAIN Training for Automation and Drives练习: 识别变量的类型StatementL#Number_1L#Number_2T#Maximum_valueL #Intermediate_resultL“Number
13、_1”TMW 40T#Number_2GlobalLocalAbsoluteSymbolicSIMATIC S7Siemens AG 2003. All rights reserved.TemporaryStaticParameterDate:2018/9/30File:FCFBs.20SITRAIN Training for Automation and Drives在块调用时使用EN/ENO参数LAD/FBDSTL 无条件调用FC 1ENENO? . ?1FCCALL NOP 0条件调用FC 1ENENO=AI0.1JNB_001CALLFC1_001:ABR=Q5.0例子? . ?=EN
14、OENFC 3ENOENFC 2ENOENFC 1Q 5.0I 0.1SIMATIC S7Siemens AG 2003. All rights reserved.Date:2018/9/30File:FCFBs.21SITRAIN Training for Automation and Drives有参数，和/或静态参数无参数，无静态参数有参数无参数总结: 块的调用语言FCFBSTLLADFBD FC1FC1 ( CALL ) CALL FC2Par1: .Par2: .Par3: . UC FC1 CC FC1 CALL FC1ENOENFC1ENOPar3ENPar1 Par2FC2CA
15、LLENOENFC1Par3ENOENPar1 Par2FC2DB2DB3DB2DB3 CALL FB2, DB3 Par1: .Par2: .Par3: . UC FB1 CC FB1 CALL FB1, DB2ENOENFB1ENOPar3ENPar1 Par2FB2ENOENFB1Par3ENOENPar1 Par2FB2SIMATIC S7Siemens AG 2003. All rights reserved.Date:2018/9/30File:FCFBs.22SITRAIN Training for Automation and Drives练习（选作）: 多台设备的风扇监控功能功能符号ACKN=1ATIMER_NOS_ODTB CSIG RSQFC 8&TIMER_NO TVSIGFLTA B CACKNREPORT=1A BCFLTSIMATIC S7Siemens AG 2003. All rights reserved.Date:2018/9/30File:FCFBs.23SITRAIN Training for Auto
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