1.Î÷ÃÅ×ÓPLCÔÚ±¸Ó÷¢µç³§µÄÓ¦ÓÃ
½ñÌ죬£¬Ëæ×ŶԹ¤Òµ×Ô¶¯»¯µÄÒªÇóÔ½À´Ô½¸ß£¬£¬ÒÔ¼°´ó×Ú¿ØÖÆ×°±¸ºÍÀú³Ì¼à¿Ø×°ÖÃÖ®¼äͨѶµÄÐèÒª£¬£¬'¼à¿ØºÍÊý¾ÝÊÕÂÞϵͳ'Ô½À´Ô½Êܵ½Óû§µÄÖØÊÓ¡£¡£ÔÚ¶¯Á¦ÏµÍ³·½Ã棬£¬ÒÔ²ñÓÍ·¢µç»ú×é×÷ΪӦ¼±±¸ÓõçÔ´µÄ·¢µç³§£¬£¬ÔÚ¹¤³§¡¢¿óɽ¡¢¸ß²ãÐÞ½¨¡¢Ò½Ôº¡¢Óʵ硢±ö¹ÝµÈÐí¶à²¿·Ö¶¼»ñµÃÁËÆÕ±éµÄÓ¦Óᣡ£ÎªÁËÌá¸ß¹©µçÖÊÁ¿ºÍ¹©µç¿É¿¿ÐÔ£¬£¬¸ÄÉƲÙ×÷Ö°Ô±µÄÊÂÇéÌõ¼þ£¬£¬ïÔÌά»¤ÔËÐÐÖ°Ô±£¬£¬±¸Ó÷¢µçÕ¾ÆÈÇÐÒªÇóʵÏÖ×Ô¶¯»¯ÔËÐкÍÖÎÀí¡£¡£¸Ã¼à¿ØϵͳÓɼàÊÓÖ÷»ú(°üÀ¨Í¨Ñ¶°å)ºÍÈô¸ÉÏÖ³¡µÄ´ÓÕ¾ÓÉÎ÷ÃÅ×ÓPLC×é³É¡£¡£ÊµÏÖ·¢µç»ú×éµÄÊý¾ÝÊÕÂÞ¡¢±¨¾¯¡¢´æ´¢¡¢±¸·ÝµÈЧÀÍ¡£¡£±¾ÎÄÖ÷ÒªÏÈÈÝÏÂλ»úCPU226CNÎ÷ÃÅ×ÓPLCµÄϵͳÔÀí¡£¡£
2 ϵͳµÄ×ÜÌåÉè¼Æ
Á¬ÏµÉú²úÏÖʵµÄÐèÒª£¬£¬Ë¼Á¿¸Ã·¢µç»ú×éµÄ×Ô¶¯»¯ÏµÍ³ÓÉ5´ó¹¦Ð§²¿¼þ×é³É¡£¡£
(1) ·¢µç»ú×éµÄ×Ô¶¯Æô¶¯ºÍ×Ô¶¯Í£»£»£»£»£»ú£»£»£»£»£»
(2) ¹¤³ÌÊеçºÍ»úµçµÄ×Ô¶¯Çл»£»£»£»£»£»
(3) ·¢µç»ú×éµçѹºÍƵÂʵÄ×Ô¶¯µ÷Àí£»£»£»£»£»
(4) ·¢µç»ú×é¹ÊÕÏ×Ô¶¯¼ì²â£¬£¬±¨¾¯ºÍ¹ÊÕÏ´¦Öóͷ££»£»£»£»£»
(5) ·¢µç»ú×éµçѹ¡¢µçÁ÷¡¢ÆµÂÊ¡¢Óй¦¹¦ÂÊ¡¢Æô¶¯µç³ØµçѹµÈµçÁ¿²ÎÊýµÄ×Ô¶¯µ÷Àí¡£¡£
3 ϵͳ×é³É
3.1 CPU226CNÎ÷ÃÅ×ÓPLCµÄÌØÕ÷ºÍÌصã
CPU226CNÎ÷ÃÅ×ÓPLCϵÁпɱà³Ì¿ØÖÆÆ÷£¬£¬ÐԼ۱ȸߣ¬£¬Ó²¼þÉèÖÃÆëÈ«£¬£¬ËüµÄÌصãÓëÐÔÄÜÈçÏ£º
(1)»úÄÚÓиßËÙ¼ÆÊýÆ÷£¬£¬¿ÉͬʱÊäÈë6·¸ßËÙÂö³å£¬£¬²¢¿ÉÊä³öƵÂʺÍÂö¿í¿Éµ÷µÄ¸ßËÙÂö³åÐźš£¡£
(2)¾ßÓÐ21ÆäÖÐÖ¹Ô´µÄÖÐÖ¹ÓÅÏÈÖÎÀí£¬£¬²¢ÅäÓÐRS485½Ó¿Ú£¬£¬¿ÉʵÏÖPLC ÓëPC»úÖ®¼äµÄÔ¶³ÌͨѶ£¬£¬±ãÓÚÉÏλ»ú¼à¿ØºÍÁªÍø¡£¡£
(3)¾ßÓнṹ½ô´Õ¡¢×é×°ÎÞа¡¢±à³Ì¼òÆÓ£¬£¬¿¹×ÌÈÅÄÜÁ¦Ç¿¡¢¿É¿¿ÐԸߵÈÌص㡣¡£
Óɴ˿ɼû£¬£¬ËüºÜÊÇÊÊÓÃÓÚ¹¤Òµ¿ØÖÆÖÐСÐÍ×Ô¶¯¿ØÖÆϵͳ¡£¡£¾ÆÊÎö£¬£¬¾öÒé½ÓÄÉCN-200ϵÁÐPLCϵÁпɱà³Ì¿ØÖÆÆ÷×÷Ϊ·¢µç»ú×é×Ô¶¯¿ØÖÆϵͳµÄ½¹µã²¿¼þ¡£¡£
3.2 PLC ÉèÖü°I/OµÄ·ÖÅɺ͹¦Ð§
¾Ì«¹ýÎö£¬£¬±¾ÏµÍ³½ÓÄÉ10¸ö¿ª¹ØÁ¿ÊäÈ룬£¬10¸ö¿ª¹ØÁ¿Êä³öºÍ3¸öÄ£ÄâÁ¿ÊäÈ룬£¬¼´¿ÉÖª×ãϵͳ¿ØÖÆÐèÇ󣬣¬Òò´Ë¡ª¡ªPLCÉèÖÃÈçÏÂ
Î÷ÃÅ×ÓPLC CPUÄ£¿ £¿£¿£¿£¿é£º6ES7 216-2BD23-0XB8
ζȿØÖÆÄ£¿ £¿£¿£¿£¿é£º6ES7 235-0KD22-0XA8
I/OµÄ·ÖÅɺ͹¦Ð§ÈçÏ£º
¿ª¹ØÁ¿ÊäÈ룺
IO.0:ÊäÈëÖÐÖ¹ (ÅäºÏÂö¿íµ÷ÖÆʹÓÃ)
IO.1:·½·¨Ñ¡Ôñ (0-Ô¶³Ì¿ØÖÆ 1-×Ô¶¯)
IO.2:Êеç¼ì²â (0-ÎÞÊеç 1-ÓÐÊеç)
IO.3:»úµç¼ì²â (0-ÎÞ»úµç 1-Óлúµç)
IO.4:ÓÍѹµÍ (0-ÓÍѹÕý³£ 1-ÓÍѹƫµÍ)
IO.5:ÓÍË®ÎÂ¸ß (0-ÓÍË®ÎÂÕý³£ 1-ÓÍË®ÎÂÆ«¸ß)
IO.6:¸ßËÙ¼ÆÊýÆ÷HSCI (ʹÓøßËÙ¼ÆÊýÆ÷¼ì²âÆô¶¯µç³Øµçѹ)
IO.7:½ôÆÈÍ£³µ (0-·Ç½ôÆÈÍ£³µ×´Ì¬ 1-½ôÆÈÍ£³µ×´Ì¬)
IO.0:¸´Î» (1-ÊÖ¶¯¸´Î»)
(ʹÓøßËÙ¼ÆÊýÆ÷¼ì²âתËÙ)
¿ª¹ØÁ¿ÊäÈ룺
Q0.0:¸ßËÙÂö³åÊä³ö (ͨ¹ý¿ØÖÆÖ±Á÷µç´ÅÌúµ÷ÀíתËÙ)
Q0.1:Í£»£»£»£»£»ú (1-Í£»£»£»£»£»úµç´Å·§Ðж¯)
Q0.2:Æô¶¯ (1-Æô¶¯Âí´ïÐж¯)
Q0.3:ÊеçºÏÕ¢ (1-ÊеçÖ÷¿ª¹ØÐж¯)
Q0.4:»úµçºÏÕ¢ (1-»úµçÖ÷¿ª¹ØÐж¯)
Q0.5:ÈýÆôʧ°Ü (1-ÈýÆôʧ°ÜÐźŵÆÁÁ)
Q0.6:»ú×é¹ÊÕÏ (1-»ú×é¹ÊÕÏÐźŵÆÁÁ)
Q0.7:¾¯Áå (1-¾¯ÁåÏì)
Q1.0:×Ô¶¯Ç¿¼¤´Å (1-Ç¿¼¤´Å¼ÌµçÆ÷Ðж¯)
Q1.1:ÀäÆô¶¯×Ô¶¯¸¨Öú (1-ÀäÆô¶¯¸¨Öú×°Öõç´Å·§Ðж¯)
Ä£ÄâÁ¿ÊäÈ룺
AIW0:ĸÏßµçѹ
AIW2:ĸÏßµçÁ÷
AIW4:¸ºÔع¦ÂÊ
Î÷ÃÅ×ÓPLCÔÚ±¸Ó÷¢µç³§µÄÓ¦ÓÃ
4 ϵͳʵÏÖ
·¢µçÕ¾×Ô¶¯»¯¼à¿ØϵͳÓÉ»ú×é×Ô¶¯ÆôÍ£¿ £¿£¿£¿£¿ØÖÆ£¬£¬×ªËÙ×Ô¶¯µ÷Àí£¬£¬µçÁ¿²ÎÊý×Ô¶¯¼ì²â£¬£¬¹ÊÕÏ×Ô¶¯¼ì²âµÈ¹¦Ð§Ä£¿ £¿£¿£¿£¿é×é³É¡£¡£
4.1 Öƶ¯ÆôÍ£¿ £¿£¿£¿£¿ØÖÆ
±¾¹¦Ð§Ä£¿ £¿£¿£¿£¿éÊÇƾ֤¸÷¿ª¹ØÁ¿µÄÊäÈë״̬£¬£¬×Ô¶¯¿ØÖÆ»ú×éµÄÆô¶¯¡¢×èÖ¹ºÍ»úµçÓëÊеçµÄÏ໥Çл»¡£¡£ÕâÖ÷ÒªÊôÓÚ˳Ðò¿ØÖƾßÓнÏÇ¿µÄÂß¼¿ØÖÆ¡£¡£ÓÃCPU226CNÎ÷ÃÅ×ÓPLCʵÏÖdzÒ׶ø¿É¿¿¡£¡£
4.2 תËÙµ÷Àí
ÓÍ»úתËÙµ÷ÀíÊÇͨ¹ýCPUÖиßËÙÂö³åÊä³öÂö¿íµ÷ÖÆ(PWM)¹¦Ð§µ÷Àí¿É¿ØÖ±Á÷µç´ÅÌú¿ØÖƲñÓÍ»úÓÍÃÅ¿ª¶ÈÀ´ÊµÏֵġ£¡£ÓÃCPUʵÏÖתËÙµ÷ÀíÒªÁìÈçÏ£º×ªËÙÐźÅÓÉ×°ÖÃÔÚ²ñÓÍ»úÉϴŵçʽ´«¸ÐÆ÷»ñµÃ£¬£¬CPUͨ¹ý¸ßËÙ¼ÆÊýÆ÷ÕÉÁ¿ÓÍ»úתËÙ£¬£¬²âµÃתËÙÐźÅËÍÈëPIDµ÷ÀíÆ÷£¬£¬½«µ÷ÀíÆ÷Êä³öµÄÊý×ÖÁ¿×ª»»ÎªÂö³å¿í¶ÈµÄʱ¼äÁ¿£¬£¬ÔÙͨ¹ýCPUÖеÄÂö¿í¿Éµ÷µÄ¸ßËÙÂö³åÊä³ö(QO£¬£¬0)£¬£¬¾Óɹ¦ÂÊÇý¶¯Æ÷¿ØÖÆ¿É¿ØÖÆÖ±Á÷µç´ÅÌúµ÷Àí½ôÓÍ»úÃÅ¿ª¶È¾Þϸ£¬£¬´Ó¶øʵÏÖ¶ÔÓÍ»úתËٵĵ÷Àí¡£¡£