PLC¡¢CPUµÈÓ²¼þË𻵻òÈí¼þÔËÐгö´íµÄ¸ÅÂʼ¸ºõΪÁ㣬PLCÊäÈëµãÈç²»ÊÇÇ¿µçÈëÇÖËùÖ£¬¼¸ºõÒ²²»»áË𻵣¬PLCÊä³ö¼ÌµçÆ÷µÄ³£¿ªµã£¬Èô²»ÊÇÍâΧ¸ºÔضÌ· »òÉè¼Æ²»ºÏÀí£¬¸ºÔصçÁ÷³¬³ö¶î¶¨·¶Î§£¬´¥µãµÄÊÙÃüÒ²ºÜ³¤¡£Òò´Ë£¬ÎÒÃDzéÕÒµçÆø¹ÊÕϵ㣬ÖصãÒª·ÅÔÚPLCµÄÍâΧµçÆøÔª¼þÉÏ£¬²»Òª×ÜÊÇ»³ÒÉPLCÓ²¼þ»ò³ÌÐòÓÐÎÊÌ⣬Õâ¶Ô¿ìËÙάÐÞºÃ¹Ê ÕÏÉ豸¡¢¿ìËÙ»Ö¸´Éú²úÊÇÊ®·ÖÖØÒªµÄ£¬Òò´Ë±ÊÕßËù̸µÄPLC¿ØÖƻطµÄµçÆø¹ÊÕϼìÐÞ£¬Öص㠲»ÔÚPLC±¾Éí£¬¶øÊÇPLCËù¿ØÖƻطÖеÄÍâΧµçÆøÔª¼þ¡£
¶ÔÓÚPLCÆóÒµÀ´Ëµ£¬ÔÚ¹¤Òµ×Ô¶¯»¯ÁìÓòµÄ¾ºÕù¿ÉνÊÇÈÕÇ÷°×ÈÈ»¯¡£ÄÇô£¬ÔÚÈç½ñ×Ô¶¯»¯ÆóÒµ×ÅÁ¦ÌáÉý“ӲʵÁ¦”µÄÐÎÊÆÏ£¬ÓëPLCÏàÅäÌ׵ēÈíʵÁ¦”½«»áºÎÈ¥ºÎ´ÓÄØ£¿ÏÖÈç½ñÖйú¹¤ÒµÈí¼þÊг¡Õý·¢Éú×ÅÒ»´ÎÉî¿ÌµÄ±ä¸ï¡£ PLCΪÏÂλ»ú¶ø×é³ÉµÄ¿ØÖÆϵͳ£¬ÒѳÉΪ¹ã·ºÓ¦ÓõĿØÖÆģʽ£¬Ëü½áºÏÁ˼ÆËã»úµÄ½çÃæÓѺã¬Ö±¹ÛºÍPLCÎȶ¨¡¢±à³ÌÁé»îµÄÓŵ㣬Ö÷µ¼¼ÆËã»ú¿ØÖÆϵͳµÄÁ÷ÐÐÇ÷ÊÆ£¬Òò´Ë£¬¶ÔPLCµÄÊý¾Ý½»»¥£¬×éÍø¹¦ÄÜÌá³öÁ˸ü¸ßµÄÒªÇó£¬ÈçPLCÓëPLCÖ®¼ä£¬PLCÓë¼ÆËã»ú¡¢PLCÓëÖÇÄÜÉ豸µÈ¶¼ÐèÒª½øÐÐÊý¾Ý½»»¥£¬ÌرðÊÇÔÚijЩԶ³Ì¿ØÖÆ£¬¿ØÖƵã·ÖÉ¢µÈ³¡ºÏ£¬PLCµÄÍøÂ繦ÄÜÏÔµÃÓÈΪÖØÒª¡£
CPUÖ÷ÒªÓÉÔËËãÆ÷¡¢¿ØÖÆÆ÷¡¢¼Ä´æÆ÷¼°ÊµÏÖËüÃÇÖ®¼äÁªÏµµÄÊý¾Ý¡¢¿ØÖƼ°×´Ì¬×ÜÏß¹¹³É£¬CPUµ¥Ôª»¹°üÀ¨ÍâΧоƬ¡¢×ÜÏß½Ó¿Ú¼°Óйصç·¡£ÄÚ´æÖ÷ÒªÓÃÓÚ´æ´¢³ÌÐò¼°Êý¾Ý£¬ÊÇPLC²»¿ÉȱÉÙµÄ×é³Éµ¥Ôª¡£
ÔÚʹÓÃÕß¿´À´£¬²»±ØÒªÏêϸ·ÖÎöCPUµÄÄÚ²¿µç·£¬µ«¶Ô¸÷²¿·ÖµÄ¹¤×÷»úÖÆ»¹ÊÇÓ¦ÓÐ×ã¹»µÄÀí½â¡£CPUµÄ¿ØÖÆÆ÷¿ØÖÆCPU¹¤×÷£¬ÓÉËü¶ÁÈ¡Ö¸Áî¡¢½âÊÍÖ¸Áî¼°Ö´ÐÐÖ¸Áî¡£µ«¹¤×÷½Ú×àÓÉÕðµ´ÐźſØÖÆ¡£ÔËËãÆ÷ÓÃÓÚ½øÐÐÊý×Ö»òÂß¼ÔËË㣬ÔÚ¿ØÖÆÆ÷Ö¸»ÓϹ¤×÷¡£¼Ä´æÆ÷²ÎÓëÔËË㣬²¢´æ´¢ÔËËãµÄÖмä½á¹û£¬ËüÒ²ÊÇÔÚ¿ØÖÆÆ÷Ö¸»ÓϹ¤×÷¡£
CPUËٶȺÍÄÚ´æÈÝÁ¿ÊÇPLCµÄÖØÒª²ÎÊý£¬ËüÃǾö¶¨×ÅPLCµÄ¹¤×÷Ëٶȣ¬IOÊýÁ¿¼°Èí¼þÈÝÁ¿µÈ£¬Òò´ËÏÞÖÆ×Å¿ØÖƹæÄ£¡£
I/OÄ£¿é :PLCÓëµçÆø»Ø·µÄ½Ó¿Ú£¬ÊÇͨ¹ýÊäÈëÊä³ö²¿·Ö£¨I/O£©Íê³ÉµÄ¡£I/OÄ£¿é¼¯³ÉÁËPLCµÄI/Oµç·£¬ÆäÊäÈëÔÝ´æÆ÷·´Ó³ÊäÈëÐźÅ״̬£¬Êä³öµã·´Ó³Êä³öËø´æÆ÷״̬¡£ÊäÈëÄ£¿é½«µçÐźű任³ÉÊý×ÖÐźŽøÈëPLCϵͳ£¬Êä³öÄ£¿éÏà·´¡£I/O·ÖΪ¿ª¹ØÁ¿ÊäÈ루DI£©£¬¿ª¹ØÁ¿Êä³ö£¨DO£©£¬Ä£ÄâÁ¿ÊäÈ루AI£©£¬Ä£ÄâÁ¿Êä³ö£¨AO£©µÈÄ£¿é¡£
³£ÓõÄI/O·ÖÀàÈçÏ£º
¿ª¹ØÁ¿£º°´µçѹˮƽ·Ö£¬ÓÐ220VAC¡¢110VAC¡¢24VDC£¬°´¸ôÀ뷽ʽ·Ö£¬Óм̵çÆ÷¸ôÀëºÍ¾§Ìå¹Ü¸ôÀë¡£
Ä£ÄâÁ¿£º°´ÐźÅÀàÐÍ·Ö£¬ÓеçÁ÷ÐÍ£¨4-20mA,0-20mA£©¡¢µçѹÐÍ£¨0-10V,0-5V,-10-10V£©µÈ£¬°´¾«¶È·Ö£¬ÓÐ12bit,14bit,16bitµÈ¡£
³ýÁËÉÏÊöͨÓÃIOÍ⣬»¹ÓÐÌØÊâIOÄ£¿é£¬ÈçÈȵç×è¡¢Èȵçż¡¢Âö³åµÈÄ£¿é¡£
°´I/OµãÊýÈ·¶¨Ä£¿é¹æ¸ñ¼°ÊýÁ¿£¬I/OÄ£¿é¿É¶à¿ÉÉÙ£¬µ«Æä×î´óÊýÊÜCPUËùÄܹÜÀíµÄ»ù±¾ÅäÖõÄÄÜÁ¦£¬¼´ÊÜ×î´óµÄµ×°å»ò»ú¼Ü²ÛÊýÏÞÖÆ¡£