塊調(diào)用與多重背景模型-資料下載頁
2024-10-17 18:04本頁面
【導(dǎo)讀】單個任務(wù)在各自塊中。塊可以按需要隨時。只能通過參數(shù)列表。地址聲明名稱類型初始化值...參數(shù)位于代碼段與“局部”變量類似。在調(diào)用期間進(jìn)行數(shù)據(jù)類型檢查。調(diào)用接口與編程語言無關(guān)。PLC編程語言可以混合使用。具有足夠多的輸入，輸出，輸入/輸。無存儲區(qū)，也即只有臨時變量。僅有一個輸出參數(shù)RET_VAL. 不允許訪問全局變量和絕對地址。使用同一輸入?yún)?shù)提供相同的結(jié)果。寄存器內(nèi)容可能會被覆蓋掉，甚至是DB寄存器。請注意B堆棧中內(nèi)容的解釋。CALL指令的處理時間取決于實(shí)際參數(shù)的數(shù)目和存儲單元位置。CALL指令確保了塊參數(shù)被正確地賦予當(dāng)前數(shù)據(jù)
【正文】 eserved. SITRAIN Training for Automation and Drives FB1 “Station” 的工作原理 FB1: Station Take_piece_ from_conv: LED 快速閃爍 Piece_finished: LED 慢速閃爍 Process_ piece LED 連續(xù)點(diǎn)亮 IN 參數(shù) : 數(shù)據(jù)類型 : Initial BOOL Proxy_switch BOOL Acknowledge BOOL Clock_bit_q BOOL Clock_bit_s BOOL OUT 參數(shù) : LED BOOL Transp_req BOOL I/O 參數(shù) : Conv_busy BOOL 靜態(tài)變量 : State STRUCT Process_piece BOOL Piece_finished BOOL Place_part_on_conv BOOL Wait_for_piece BOOL Take_piece_from_conv BOOL END_STRUCT ? 狀態(tài)模型 : A Acknowledge AN Proxy_switch A Transp_req ? FB1中的聲明 : Wait_ for_piece: LED 熄滅 Place_part_ on_conv: LED快速閃爍 AN Conv_busy A Proxy_switch AN Proxy_switch A Initial FP ... Date: 2020/11/23 File: SIMATIC S7 Siemens AG 2020. All rights reserved. SITRAIN Training for Automation and Drives FB2 “Transport”的工作原理 Conv_ left LED 閃爍 Conv_ right LED 閃爍 A Transp_req Waiting LED 熄滅 AN Tansp_req AN LBarrier Assembly LED連續(xù)點(diǎn)亮 A Acknowledge ? 狀態(tài)模型： ? FB2的接口 : IN 參數(shù) : 數(shù)據(jù)類型 : Initial BOOL L_Barrier BOOL Acknowledge BOOL Transp_req BOOL Clock_bit BOOL OUT 參數(shù) : LED BOOL Conv_right BOOL Conv_left BOOL 靜態(tài)變量 : State STRUCT Waiting BOOL Conv_right BOOL Assembly BOOL Conv_left BOOL END_STRUCT FB2: Transport A Initial FP ... Date: 2020/11/23 File: SIMATIC S7 Siemens AG 2020. All rights reserved. SITRAIN Training for Automation and Drives 練習(xí) ： 擴(kuò)展到 3個站 FB10 Station_1的數(shù)據(jù) FB10的背景數(shù)據(jù)塊 CALL Station_1 CALL Station_2 CALL Station_3 CALL Transport DB10 ... stat Station_1 FB1 stat Station_2 FB1 stat Station_3 FB1 stat Transport FB2 Transport的數(shù)據(jù) FB1 FB2 OB1 . CALL FB10,DB10 . Station_2的數(shù)據(jù) Station_3的數(shù)據(jù) Date: 2020/11/23 File: SIMATIC S7 Siemens AG 2020. All rights reserved. SITRAIN Training for Automation and Drives 塊參數(shù)之間的聯(lián)鎖 Station_1 Initial LED Proxy_switch Transp_req Acknowledge Clock_bit_q Clock_bit_s Conv_busy LB1 Transport Initial LED L_Barrier Conv_right Acknowledge Conv_left Transp_req Clock_bit H4 K1_CONVR K2_CONVL I S4 S1 INI1 I H1 Station_2 H2 Station_3 H3 FB10: Assembly_line DB10: Assembly_line_DB Station_2 Initial LED Proxy_switch Transp_req Acknowledge Clock_bit_q Clock_bit_s Conv_busy S2 INI2 I Station_3 Initial LED Proxy_switch Transp_req Acknowledge Clock_bit_q Clock_bit_s Conv_busy S3 INI3 I
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