s7-300400 系統(tǒng)、維護與編程綜合課程a7111serv2_01c_dbs

1、SIMATIC S7Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and DrivesDate: File:2018/10/1DBs.1數(shù)據(jù)塊中的數(shù)據(jù)存儲SIMATIC S7Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and DrivesDate: File:2018/10/1DBs.2目標學習了本章之后，你將 .懂得全局數(shù)據(jù)塊的用途.熟悉基本和復雜數(shù)據(jù)類型.能夠?qū)в袉卧兞康臄?shù)據(jù)塊.熟悉并能夠應用編址數(shù)據(jù)塊

2、變編輯、存儲和下裝到CPU 量SIMATIC S7Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and DrivesDate: File:2018/10/1DBs.3數(shù)據(jù)存儲區(qū)位存儲器PIQ. .PII.I/O 區(qū)L 堆棧數(shù)據(jù)塊DBzDByDBxSIMATIC S7Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and DrivesDate: File:2018/10/1DBs.4數(shù)據(jù)塊 (DB)所有塊可以訪問FB

3、1的背景DB背景數(shù)據(jù)DB5功能塊FB1功能FC20全局數(shù)據(jù)DB20功能FC10OB1SIMATIC S7Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and DrivesDate: File:2018/10/1DBs.5STEP 7數(shù)據(jù)類型概述基本數(shù)據(jù) 位數(shù)據(jù)類型 (BOOL, BYTE, WORD, DWORD, CHAR)類型 數(shù)學數(shù)據(jù)類型 (INT, DINT, REAL)(到32 位) 定時器類型 (S5TIME, TIME, DATE, TIME_OF_DAY)復雜數(shù)據(jù) 時間 (DATE_AN

4、D_TIME)類型 矩陣 (ARRAY)(長于32位) 結(jié)構(gòu) (STRUCT) 字符串 (STRING)用戶定義數(shù)據(jù)類型(長于 32 位)數(shù)據(jù)類型 UDT (用戶定義數(shù)據(jù)類型)STEP 7基本數(shù)據(jù)類型SIMATIC S7Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and DrivesDate: File:2018/10/1DBs.6關(guān)鍵字長度 (位)該類型的常數(shù)舉例BOOL BYTE WORD DWORD CHAR1816328True 或 False （1 或0）B#16#A9 W#16#12AF

5、DW#16#ADAC1EF5 w S5TIME16S5T#5s_200msINT DINT REAL163232123L#655391.2 或 34.5E-12TIME DATETIME_OF_DAY321632T#2D_1H_3M_45S_12MS D#1993-01-20 TOD#12:23:45.12SIMATIC S7Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and DrivesDate: File:2018/10/1DBs.7建立新數(shù)據(jù)塊SIMATIC S7Siemens AG 2003.

6、 All rights reserved.SITRAIN Training for Automation and DrivesDate: File:2018/10/1DBs.8輸入、保存、下載和監(jiān)視數(shù)據(jù)塊Data ViewDeclaration View尋址數(shù)據(jù)單元8 位70數(shù)據(jù)字節(jié) 0數(shù)據(jù)字節(jié) 1數(shù)據(jù)字節(jié) 2數(shù)據(jù)字節(jié) 3DBB 0DBW 0DBD 0DBX 4.1DBD 8188DBW 8190DBB 8191數(shù)據(jù)字節(jié) 8191SIMATIC S7Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and

7、DrivesDate: File:2018/10/1DBs.9SIMATIC S7Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and DrivesDate: File:2018/10/1DBs.10訪問數(shù)據(jù)單元完全表示訪問傳統(tǒng)訪問方法絕對尋址符號尋址OPNValuesADBX 0.0或ADB99.DBX0.0或AValues.StatusOPNDB 99LDBB 1或LDB99.DBB1或LValues.StatesOPNValues或TDB99.DBW2或T Values.Number TDBW 2

8、OPNDB 99LDBD 8或LDB99.DBD8或L Values.Weight2DB 99ValuesAdd.NameType0.0StatusBOOL1.0StatesBYTE2.0NumberINT4.0Weight1REAL8.0Weight2REALSIMATIC S7Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and DrivesDate: File:2018/10/1DBs.11練習: 計數(shù)傳送的零件 (FC 18, DB 18):ACTUAL-number of parts QW 6

9、SETPOINT-number of partsIW 2ACTUAL=SETPOINT Q 8.4傳送帶模型 - LED0815CPU 程序: DB 18, FC 18模擬器練習: 計數(shù)傳送的零件(FC 18), 答案提示NW 1:Set counter to 0復位的條件DB_Parts.ACT_Number_of_parts0NW 2:Counting using memory word, ACTUAL number of parts計數(shù)的上升沿DB_Parts.ACT_Number_of_partsDB_Parts.ACT_Number_of_parts1NW 3:Display ACT

10、UAL number of parts on BCD digital display零件的實際值(DB_Parts.ACT_Number_of_parts)從整數(shù)到BCD轉(zhuǎn)換-結(jié)果在 BCD 數(shù)字顯示 ( QW 6)NW 4:Readin SETPOINT number of parts and convert from BCD to Integer來自數(shù)碼撥輪 ( IW 2)的值從 BCD 轉(zhuǎn)換到整數(shù)- 把零件的給定值 (Integer)存儲在 MW 200NW 5:ACTUAL-SETPOINT comparison, LED (red LED Q8.4)比較實際值 (“DB_Parts”

11、.ACT_Number_of_parts)和給定值(MW 200),比較的結(jié)果送到紅色的LEDSIMATIC S7Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and DrivesDate: File:2018/10/1DBs.12ADD_IENENOIN1OUTIN2MOVEENOUTINENOSIMATIC S7Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and DrivesDate: File:2018/

12、10/1DBs.13初始值、實際值、初始化、記憶Upload in PGInitialize data block帶初始值的DB帶實際值的DB帶初始值（實際值） 的DBSTEP 7programWork memory帶實際值的DBLoad memory帶初始值（實際值） 的DBSIMATIC S7Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and DrivesDate: File:2018/10/1DBs.14如果你想知道更多復雜數(shù)據(jù)類型SIMATIC S7Siemens AG 2003. All r

13、ights reserved.SITRAIN Training for Automation and DrivesDate: File:2018/10/1DBs.15關(guān)鍵字長度 (位)舉例DATE_AND_TIME64DT#97-09-24-12:14:55.0STRING(最多254個字符的字符串)8 * (字符個數(shù)+2 )This is a stringSIEMENSARRAY(相同數(shù)據(jù)類型的元素組)用戶定義Measured values ： ARRAY1.20INTSTRUCT(不同數(shù)據(jù)類型的元素組)用戶定義Motor: STRUCT Speed : INT Current: REALE

14、ND_STRUCTUDT(用戶定義數(shù)據(jù)類型 = 基本或復雜數(shù)據(jù)類型組成的模板）用戶定義UDT 作為塊UDT作為array 元素STRUCTSpeed : INT Current: REALEND_STRUCTDrive: ARRAY1.4UDT1SIMATIC S7Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and DrivesDate: File:2018/10/1DBs.16矩陣舉例Measuring_point帶有名字“Measuring_point” 的矩陣 (相同數(shù)據(jù)類型的幾個元素)程序編輯

15、器中的顯示 (數(shù)據(jù)塊 DB 2):10. Measuring_point, data type Real1. Measuring_point, data type Real2. Measuring_point, data type Real3. Measuring_point, data type RealSIMATIC S7Siemens AG 2003. All rights reserved.SITRAIN Training for Automation and DrivesDate: File:2018/10/1DBs.17結(jié)構(gòu)舉例Motor_data帶有名字“Motor_data” 的結(jié)構(gòu)(不同數(shù)據(jù)類型的幾個元素)程序編輯器中的顯示 (數(shù)據(jù)塊 DB 1):Speed, data type IntegerRated_current, data type RealStarting_current, data type RealDirection,