Î÷ÃÅ×ÓPLC300¼°ÓйØÉ豸ӦÊǼ¯³ÉµÄ¡¢±ê×¼µÄ£¬Æ¾¾ÝÒ×ÓÚÓ빤ҵ¿ØÖÆÏµÍ³ÐγÉÒ»¸öÕûÌ壬Ò×ÓÚÀ©³äÆä¹¦Ð§µÄÔÔòÑ¡ÐÍËùÑ¡ÓÃÎ÷ÃÅ×ÓPLCÓ¦ÊÇÔÚÏà¹Ø¹¤ÒµÁìÓòÓÐͶÔËÒµ¼¨¡¢³ÉÊì¿É¿¿µÄϵͳ£¬PLC300µÄϵͳӲ¼þ¡¢Èí¼þÅäÖü°¹¦Ð§Ó¦Óë×°ÖùæÄ£ºÍ¿ØÖÆÒªÇóÏàÊÊÓ¦¡£
Ò»¡¢»úÐ͵ÄÑ¡Ôñ
£¨Ò»£©PLC300µÄÀàÐÍ
PLC°´½á¹¹·ÖΪÕûÌåÐͺÍÄ£¿éÐÍÁ½À࣬°´Ó¦ÓÃÇé¿ö·ÖΪÏÖ³¡×°ÖúͿØÖÆÊÒ×°ÖÃÁ½Àà;°´CPU×Ö³¤·ÖΪ1λ¡¢4λ¡¢8λ¡¢16λ¡¢32λ¡¢64λµÈ¡£´ÓÓ¦ÓýǶȳö·¢£¬Í¨³£¿É°´¿ØÖƹ¦Ð§»òÊäÈëÊä³öµãÊýÑ¡ÐÍ¡£
ÕûÌåÐÍPLCµÄI/OµãÊýÀι̣¬Òò´ËÓû§Ñ¡ÔñµÄÓàµØ½ÏС£¬ÓÃÓÚСÐÍ¿ØÖÆÏµÍ³;Ä£¿éÐÍPLCÌṩ¶àÖÖI/O¿¨¼þ»ò²å¿¨£¬Òò´ËÓû§¿É½ÏºÏÀíµØÑ¡ÔñºÍÅäÖÿØÖÆÏµÍ³µÄI/OµãÊý£¬¹¦Ð§À©Õ¹±ãµ±Áé»î£¬Ò»°ãÓÃÓÚ´óÖÐÐÍ¿ØÖÆÏµÍ³¡£
£¨¶þ£©ÊäÈëÊä³öÄ£¿éµÄÑ¡Ôñ
ÊäÈëÊä³öÄ£¿éµÄÑ¡ÔñÓ¦¿¼ÂÇÓëÓ¦ÓÃÒªÇóµÄͳһ¡£ÀýÈç¶ÔÊäÈëÄ£¿é£¬Ó¦¿¼ÂÇÐÅºÅµçÆ½¡¢ÐźŴ«Êä¾àÀë¡¢ÐźŸôÀë¡¢ÐźŹ©µç·½·¨µÈÓ¦ÓÃÒªÇó¡£¶ÔÊä³öÄ£¿é£¬Ó¦¿¼ÂÇÑ¡ÓõÄÊä³öÄ£¿éÀàÐÍ£¬Í¨³£¼ÌµçÆ÷Êä³öÄ£¿é¾ßÓм۸ñµÍ¡¢Ê¹Óõçѹ¹æÄ£¹ã¡¢ÊÙÃü¶Ì¡¢ÏìӦʱ¼ä½Ï³¤µÈÌØµã;¿É¿Ø¹èÊä³öÄ£¿éÊÊÓÃÓÚ¿ª¹ØÆµ·±£¬µç¸ÐÐԵ͹¦ÂÊÒòÊý¸ººÉ³¡ºÏ£¬µ«¼Û¸ñ½Ï¹ó£¬¹ýÔØÄÜÁ¦½Ï²î¡£Êä³öÄ£¿éÁíÓÐÖ±Á÷Êä³ö¡¢½»Á÷Êä³öºÍÄ£ÄâÁ¿Êä³öµÈ£¬ÓëÓ¦ÓÃÒªÇóÓ¦Ò»Ö¡£
¿Éƾ¾ÝÓ¦ÓÃÒªÇ󣬺ÏÀíÑ¡ÓÃÖÇÄÜÐÍÊäÈëÊä³öÄ£¿é£¬ÒÔ±ãÌá¸ß¿ØÖÆË®Æ½ºÍ½µµÍÓ¦Óñ¾Ç®¡£¿¼ÂÇÊÇ·ñÐèÒªÀ©Õ¹»ú¼Ü»òÔ¶³ÌI/O»ú¼ÜµÈ¡£
£¨Èý£©´æ´¢Æ÷µÄÑ¡Ôñ
ÓÉÓÚÅÌËã»ú¼¯³ÉоƬ¼¼ÊõµÄÉú³¤£¬´æ´¢Æ÷µÄ¼Û¸ñÒÑϽµ£¬Òò´Ë£¬Îª°ü¹ÜÓ¦ÓÃÏîÄ¿µÄÕý³£Í¶ÔË£¬Ò»°ãÒªÇóPLCµÄ´æ´¢Æ÷ÈÝÁ¿£¬°´256¸öI/OµãÖÁÉÙÑ¡8K´æ´¢Æ÷Ñ¡Ôñ¡£ÐèÒªÅÓ´ó¿ØÖƹ¦Ð§Ê±£¬Ó¦Ñ¡ÔñÈÝÁ¿¸ü´ó£¬²ã´Î¸ü¸ßµÄ´æ´¢Æ÷¡£
£¨ËÄ£©ÈßÓ๦ЧµÄÑ¡Ôñ
1.¿ØÖƵ¥Î»µÄÈßÓà
£¨1£©ÖØÒªµÄÀú³Ìµ¥Î»£ºCPU(°üÀ¨´æ´¢Æ÷)¼°µçÔ´¾ùÓ¦1B1ÈßÓà¡£
£¨2£©ÔÚÐèҪʱҲ¿ÉÑ¡ÓÃPLCÓ²¼þÓëÈȱ¸Èí¼þ×é³ÉµÄÈȱ¸ÈßÓàϵͳ¡¢2ÖØ»¯»ò3ÖØ»¯ÈßÓàÈÝ´íϵͳµÈ¡£
2.I/O½Ó¿Úµ¥Î»µÄÈßÓà
£¨1£©¿ØÖÆ»ØÂ·µÄ¶àµãI/O¿¨Ó¦ÈßÓàÅäÖá£
£¨2£©ÖØÒª¼ì²âµãµÄ¶àµãI/O¿¨¿ÉÈßÓàÅäÖá£3)ƾ¾ÝÐèÒª¶ÔÖØÒªµÄI/OÐźţ¬¿ÉÑ¡ÓÃ2ÖØ»¯»ò3ÖØ»¯µÄI/O½Ó¿Úµ¥Î»¡£
¶þ¡¢¿ØÖƹ¦Ð§µÄÑ¡Ôñ
¸ÃÑ¡Ôñ°üÀ¨ÔËË㹦Ч¡¢¿ØÖƹ¦Ð§¡¢Í¨ÐŹ¦Ð§¡¢±à³Ì¹¦Ð§¡¢Õï¶Ï¹¦Ð§ºÍ´¦ÀíËٶȵÈÌØÐÔµÄÑ¡Ôñ¡£
Ϊ¼õÇáCPUͨÐÅÈÎÎñ£¬Æ¾¾ÝÍøÂç×é³ÉµÄʵ¼ÊÐèÒª£¬Ó¦Ñ¡Ôñ¾ßÓвî±ðͨÐŹ¦Ð§µÄ(Èçµã¶Ôµã¡¢ÏÖ³¡×ÜÏß¡¢¹¤ÒµÒÔÌ«Íø)ͨÐÅ´¦ÀíÆ÷¡£
Èý¡¢ÊäÈëÊä³ö(I/O)µãÊýµÄ¹ÀËã
I/OµãÊý¹ÀËãʱӦ¿¼ÂÇÊʵ±µÄÓàÁ¿£¬Í¨³£Æ¾¾Ýͳ¼ÆµÄÊäÈëÊä³öµãÊý£¬ÔÙÔö¼Ó10%¡«20%µÄ¿ÉÀ©Õ¹ÓàÁ¿ºó£¬×÷ΪÊäÈëÊä³öµãÊý¹ÀËãÊý¾Ý¡£Êµ¼Ê¶©»õʱ£¬»¹ÐèÆ¾¾ÝÖÆÔì³§ÉÌPLCµÄ²úÆ·ÌØµã£¬¶ÔÊäÈëÊä³öµãÊý½øÐÐÔ²Õû¡£
ËÄ¡¢´æ´¢Æ÷ÈÝÁ¿µÄ¹ÀËã
´æ´¢Æ÷ÈÝÁ¿Êǿɱà³ÌÐò¿ØÖÆÆ÷×Ô¼ºÄÜÌṩµÄÓ²¼þ´æ´¢µ¥Î»¾Þϸ£¬³ÌÐòÈÝÁ¿ÊÇ´æ´¢Æ÷ÖÐÓû§Ó¦ÓÃÏîĿʹÓõĴ洢µ¥Î»µÄ¾Þϸ£¬Òò´Ë³ÌÐòÈÝÁ¿Ð¡ÓÚ´æ´¢Æ÷ÈÝÁ¿¡£Éè¼Æ½×¶Î£¬ÓÉÓÚÓû§Ó¦ÓóÌÐò»¹Î´ÌåÀý£¬Òò´Ë£¬³ÌÐòÈÝÁ¿ÔÚÉè¼Æ½×¶ÎÊÇδ֪µÄ£¬ÐèÔÚ³ÌÐòµ÷ÊÔÖ®ºó²ÅÖªµÀ¡£ÎªÁËÉè¼ÆÑ¡ÐÍʱÄܶԳÌÐòÈÝÁ¿ÓÐÒ»¶¨¹ÀË㣬ͨ³£½ÓÄÉ´æ´¢Æ÷ÈÝÁ¿µÄ¹ÀËãÀ´Ìæ´ú¡£
´æ´¢Æ÷ÄÚ´æÈÝÁ¿µÄ¹ÀËãûÓÐÀι̵Ĺ«Ê½£¬Ðí¶àÎÄÏ××ÊÁÏÖиø³öÁ˲î±ð¹«Ê½£¬¸ÅÂÔÉ϶¼Êǰ´Êý×ÖÁ¿I/OµãÊýµÄ10¡«15±¶£¬¼ÓÉÏÄ£ÄâI/OµãÊýµÄ100±¶£¬ÒÔ´ËÊýΪÄÚ´æµÄ×Ü×ÖÊý(16λΪһ¸ö×Ö)£¬ÁíÍâÔÙ°´´ËÊýµÄ25%¿¼ÂÇÓàÁ¿¡£
......
¸ü¶àÄÚÈݽӴýÓëÎÒÃǽ»Á÷¡£