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×Ô¶¯»¯×¨ÒµÂÛÎÄ·¶ÎÄ Ä¿ ¼ ÕªÒªI AbstractI Ŀ¼II ÒýÑÔ1 1 ÅäÁÏÉú²úÏߵĵçÆø¿ØÖÆÒªÇó1 2 ϵͳӲ¼þÉè¼Æ2 2.1 I/OµØÖ··ÖÅä±íµÄÉè¼Æ2 2.2 PLCÓ²¼þ½ÓÏßͼµÄÉè¼Æ3 3 ϵͳÈí¼þÉè¼Æ3 3.1 ˳Ðò¹¦ÄÜͼµÄÉè¼Æ3 3.2 ÌÝÐÎͼµÄÉè¼Æ4 ½áÂÛ7 ²Î¿¼ÎÄÏ×7 ÕªÒª ±¾ÎĶÔÎ÷ÃÅ×ÓS7-200ϵÁпɱà³ÌÐò¿ØÖÆÆ÷Ó¦ÓÃÓÚÅäÁÏÉú²úÏßµçÆø¿ØÖÆϵͳµÄÉè¼Æ˼Ïë×÷Á˽éÉÜ£¬¶ÔϵͳµÄÓ²¼þ×é³ÉºÍÈí¼þÉè¼Æ×÷Á˽ÏΪÏêϸµÄ²ûÊö£¬ÏÖ³¡Ó¦ÓÃÇé¿ö±íÃ÷£¬¸ÃPLC¿ØÖÆϵͳ¹¤×÷¿É¿¿£¬²Ù×÷·½±ã¡£ ¹Ø¼ü´Ê£ºÎ÷ÃÅ×ÓS7-200PLC£»ÅäÁÏÉú²úÏߣ»Æð±£Í£µç· Abstract This article series programmable controller applied to Simens the S7-200 in the ingredient production line electric control system's design concept does introduced that made a more detailed elaboration to system's hardware composition and the software design, the field application situation had indicated that this PLC control system operation reliable, ease of operation. key word: Simens S7-200PLC; Ingredient production line; Gets up guarantees stops the electric circuit
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