Î÷ÃÅ×ÓPLC?S7-300ϵÁÐÔÚÖÐСÐÍ×Ô¶¯»¯¿ØÖÆÏµÍ³ÖÐÓ¦Óù㷺£¬ËüͨѶ¹¦Ð§Ç¿´ó£¬ÄÜͨ¹ý¶àÖÖ·½·¨ÓëÉ豸¼°ÉÏλ»úÖ®¼ä½øÐÐͨѶ¡£ÆäÖÐÓ¦Óý϶àµÄÒ»ÖÖͨѶ·½·¨ÊÇPROFIBUS DPͨѶ£¬Ëü¿ÉÒÔʵÏÖÎ÷ÃÅ×ÓPLC S7-300ϵÁÐÓëµÚÈý·½É豸֮¼äµÄPROFIBUS DPÖ÷´ÓͨѶ£¬ÁíÓÐÒ»ÖÖPROFIBUS PAÐÒ飬Ҳ¾³£ÓÃÔÚ×Ô¶¯»¯¿ØÖÆÏµÍ³ÖС£±¾ÎÄÏÂÃæ¶ÔÎ÷ÃÅ×ÓPLCµÄPROFIBUS DPºÍPROFIBUS PAͨѶÐÒé×öÒ»¸öÆÊÎö½éÉÜ£¬¹©Óû§½øÐвο¼¡£
Î÷ÃÅ×ÓPLC PROFIBUS DPºÍPROFIBUS PAÐÒéÆÊÎö
PROFBUSÊÇÒ»ÖÖ¹ú¼ÊÐԵĿª·ÅʽµÄÏÖ³¡×ÜÏß±ê×¼£¬Ëü¼È¿ÉÒÔÓÃÓÚ¸ßËÙ²¢ÇÒ¹ØÓÚʱ¼ä¿ÁÇóµÄÊý¾Ý´«Ê䣬Ҳ¿ÉÒÔÓÃÓÚ´ó¹æÄ£µÄÅÓ´óͨѶ³¡ºÏ¡£
PROFBUS-DPÊÇÒ»ÖÖͨѶÐÒ飬ÕâÖÖΪ¸ßËÙ´«ÊäÓû§Êý¾Ý¶øÓÅ»¯µÄPROFBUSÐÒéÌØ±ðÊÊÓÃÓڿɱà³Ì¿ØÖÆÆ÷ÓëÏÖ³¡¼¶ÊèÉ¢µÄI/OÉ豸֮¼äµÄͨѶ¡£
PROFIBUS -DPÓÃÓÚÏÖ³¡²ãµÄ¸ßËÙÊý¾Ý´«ËÍ¡£Ö÷Õ¾ÖÜÆÚµØ¶ÁÈ¡´ÓÕ¾µÄÊäÈëÐÅÏ¢²¢ÖÜÆÚµØÏò´ÓÕ¾·¢ËÍÊä³öÐÅÏ¢¡£×ÜÏßÑ»·Ê±¼ä±ØÐëÒª±ÈÖ÷Õ¾(plc)³ÌÐòÑ»·Ê±¼ä¶Ì¡£³ýÖÜÆÚÐÔÓû§Êý¾Ý´«ÊäÍ⣬PROFIBUS -DP»¹ÌṩÖÇÄÜ»¯É豸ËùÐèµÄ·ÇÖÜÆÚÐÔͨÐÅÒÔ½øÐÐ×é̬.Õï¶ÏºÍ±¨¾¯´¦Àí¡£
´«Êä¼¼Êõ£ºRS-485Ë«½ÊÏß.Ë«ÏßµçÀ»ò¹âÀ¡£²¨ÌØÂÊ´Ó9.6K bit/sµ½12M bit¡£
PROFIBUS-PAÊÊÓÃÓÚPROFIBUS µÄÀú³Ì×Ô¶¯»¯¡£PA½«×Ô¶¯»¯ÏµÍ³ºÍÀú³Ì¿ØÖÆÏµÍ³ÓëѹÁ¦.ʪ¶ÈºÍҺλ±äËÍÆ÷µÈÏÖ³¡É豸Á¬½ÓÆðÀ´£¬PA¿ÉÓÃÀ´Ìæ´ú4-20mAµÄÄ£Äâ¼¼Êõ¡£PROFIBUS-PA¾ßÓÐÈçÏÂÌØÐÔ£º
(1) ÊʺÏÀú³Ì×Ô¶¯»¯Ó¦ÓõÄÐйæÊ¹²î±ð³§¼ÒÉú²úµÄÏÖ³¡É豸¾ßÓн»»»ÐÔ¡£
(2) Ôö¼ÓºÍÈ¥³ý×ÜÏßÕ¾µã£¬×ÝÈ»ÔÚ±¾Õ÷Äþ¾²µØÇøÒ²²»»áÓ°Ïìµ½ÆäËüÕ¾¡£
(3) ÔÚÀú³Ì×Ô¶¯»¯µÄPROFIBUS-PA¶ÎÓëÖÆÔìÒµ×Ô¶¯»¯µÄPROFIBUS-DP×ÜÏß¶ÎÖ®¼äͨ¹ýźºÏÆ÷Á¬½Ó£¬²¢Ê¹¿ÉʵÏÖÁ½¶Î¼äµÄ͸Ã÷ͨÐÅ¡£
(4) ʹÓÃÓëIEC1158-2¼¼ÊõÏàͬµÄË«½ÊÏßÍê³ÉÔ¶³Ì¹©µçºÍÊý¾Ý´«ËÍ¡£
(5) ÔÚDZÔڵı¬Õ¨Î£ÏÕÇø¿ÉʹÓ÷À±¬ÐÍ¡°±¾Õ÷Äþ¾²¡±»ò¡°·Ç±¾Õ÷Äþ¾²¡±¡£
1¡¢PROFIBUS-PA´«ÊäÐÒé
PROFIBUS-PA½ÓÄÉPROFIBUS-DPµÄ»ù±¾¹¦Ð§À´´«ËÍÕÉÁ¿ÖµºÍ״̬¡£²¢ÓÃÀ©Õ¹µÄ PROFIBUS-DP¹¦Ð§À´Öƶ©ÖÆÏÖ³¡É豸µÄ²ÎÊýºÍ½øÐÐÉ豸²Ù×÷¡£PROFIBUS-PAµÚÒ»²ã½ÓÄÉIEC1158-2¼¼Êõ£¬µÚ¶þ²ãºÍµÚÒ»²ãÖ®¼äµÄÔÚ DIN19245ϵÁбê×¼µÄµÚËIJ¿·Ö×÷ÁË»®¶¨¡£
2¡¢PROFIBUS-PAÉ豸Ðйæ
PROFIBUS-PAÐйæ°ü¹ÜÁ˲î±ð³§ÉÌËùÉú²úµÄÏÖ³¡É豸µÄ½»»»ÐԺͻ¥²Ù×÷ÐÔ£¬ËüÊÇPROFIBUS-PAµÄÒ»¸ö×é³É²¿·Ö¡£PAÐйæµÄÈÎÎñÊÇÑ¡ÓÃÖÖÖÖÀàÐÍÏÖ³¡Éè±¸ÕæÕýÐèҪͨÐŵĹ¦Ð§£¬²¢ÌṩÕâЩÉ豸¹¦Ð§ºÍÉ豸ÐÐΪµÄÒ»ÇÐÐëÒª¹æ¸ñ¡£
Ŀǰ£¬PAÐйæÒѶÔËùÓÐͨÓõÄÕÉÁ¿±äËÍÆ÷ºÍÆäËüÑ¡ÔñµÄһЩÉ豸ÀàÐÍ×÷Á˾ßÌå»®¶¨£¬ÕâЩÉ豸È磺
(1) ²âѹÁ¦.Һλ.ζȺÍÁ÷Á¿µÄ±äËÍÆ÷
(2) Êý×ÖÁ¿ÊäÈëºÍÊä³ö
(3) Ä£ÄâÁ¿ÊäÈëºÍÊä³ö
(4) ·§ÃÅ
(5) ¶¨Î»Æ÷
Î÷ÃÅ×ÓPLC S7-300ϵÁоßÓÐÇ¿´óµÄͨѶ¹¦Ð§£¬Óû§¿ÉÒÔͨ¹ýPROFIBUS DPµÄͨѶ·½·¨À´ÊµÏÖÎ÷ÃÅ×ÓPLC S7-300Ö®¼ä»òÎ÷ÃÅ×ÓPLC S7-300ϵÁÐÓëÆäËûÉ豸֮¼äµÄͨѶ£¬Ò²¿ÉÒÔͨ¹ýPROFIBUS PAͨѶ·½·¨½øÐÐʵÏÖ¡£