PCS7 CFC编程培训(内部工程师培训).ppt

Multiple Instance The FB602 is structured so that another, already existing FB40 can be called within it. This FB is detected as static variable with the data type FB and allows to achieve nesting of variables and concentration of all instance data in one instance data block (multiple instance). Structure If you want to look at the structure of your new block, proceed as follows: - In the block folder of your library, select FB40 (INT_P), then RMC: and choose Open Object. LAD/STL/CSF is opened. - Close the block only via File - Close (Do not save, if you are prompted to save!) - In this editor open your block FB602 (V_SIM) with RMC: Object - Open Now you can see the above structure on your screen. Attributes - Position the mouse pointer in a line (with green marking), then activate RMC: Object properties - Attributes to display the table with attributes (properties) of the parameter. Changes If you change/supplement attributes here, and then save the block, it will be given an STL identification. The changes must be made known to the CFC (if the block has already been used). Further consequences arise from the type of modified attributes. 块改变(1.4) The new block version is transferred to the chart folder 块调整 (2) 块调整(2.1) 库和项目调整的块改变 (2) 库和项目调整的块改变(3) The new block version is transferred to the project AS-to-AS 通讯 反应器加热的 控制器 SP_EXT SP AS-to-AS Communication 通讯块连接 SEND_R REC_R REC_R SEND_R OP_EN U_HL U_LL LINK_U LINK_ON BTRACK U OP_A_LIM Interconnectable input for U Operator input analog Operator enable Limits V 接收到的给定可被处理 Partner A Partner B AS-to-AS通讯的通讯块 Partner 1 Partner 2 or Partner 1 Partner 2 Exercise In the plant view, you want to insert a test CFC chart with the above function in the Reactors/Test folder. Both blocks are to run in OB32. The first block type is PT1_P (time-delay element of the 1st order) and the second block type is ADD4_P (adder). Create, compile, download and test the chart. Steps 1. Call the project in plant view.