RS485ͨѶµçÀ³ö²ú³§¼Ò

RS-485Ñ¡È¡°ëË«¹¤¹¤×÷·½Ê½£¬Ö§³Ö¶àµãÊý¾ÝͨѶ¡£RS-485×ÜÏßÍøÂçÍØÆËͨ³£Ñ¡È¡ÖÕ¶ËÆ¥ÅäµÄ×ÜÏßÐͽṹ¡£¼´Ñ¡È¡Ò»Ìõ×ÜÏß½«¸÷¸ö½Úµã´®½ÓÆðÀ´£¬²»Ö§³Ö»·ÐλòÐÇÐÍÍøÂç¡£ RS-485ѡȡƽºâ·¢ËͺͲî·Ö½Ó¹Ü£¬Òò¶øÓµÓÐÒÖÔ칲ģ×ÌÈŵÄÄÜÁ¦¡£¼ÓÉÏ×ÜÏßÊÕ·¢Æ÷ÓµÓи߻îÂç¶È£¬Äܼì²âµÍÖÁ200mVµÄµçѹ£¬¹Ê´«ÊäÐźÅÄÜÔÚǧÃ×ÒÔ±íµÃµ½¸´Ô­¡£ ÓÐЩRS-485ÊÕ·¢Æ÷Åú¸ÄÊäÈë×迹ÒÔ±ãÔÊÐí½«¶à´ï8±¶ÒÔÉϵĽڵãÊýÏνӵ½Ò»Ñù×ÜÏß¡£RS-485³£¼ûµÄÀûÓÃÊÇÔÚ¹¤Òµ»·¾³Ï¿ɱà³ÌÂß¼­½ÚÔìÆ÷ÄÚ²¿Ö®¼äµÄͨѶ¡£

RS-485ѡȡƽºâ·¢ËͺͲî·Ö½Ó¹Ü·½Ê½ÊµÏÖͨѶ£º·¢ËͶ˽«´®ÐпڵÄTTLµçƽÐźÅת»»³É²î·ÖÐźÅA,BÁ½Â·Êä³ö£¬¾­¹ýÏßÀ´«ÊäÖ®ºóÔڽӹܶ˽«²î·ÖÐźŻ¹Ô­³ÉTTLµçƽÐźÅ¡£ÓÉÓÚ´«ÊäÏßͨ³£Ê¹ÓÃRIN¡Ý12k¦¸

2. Çý¶¯Æ÷ÄÜÊä³ö¡À7VµÄ¹²Ä£µçѹ

3.ÊäÈë¶ËµÄµçÈÝ¡Ü50pF

4. ÔÚ½ÚµãÊýΪ32¸ö£¬ÅäÖÃÁË120¦¸µÄÖն˵ç×èµÄÇé¿öÏ£¬Çý¶¯Æ÷ÖÁÉÙ»¹ÄÜÊä³öµçѹ1.5V£¨Öն˵ç×èµÄ´óÓ×ÓëËùÓÃË«½ÊÏߵIJÎÊýÓйأ©

5.½Ó¹ÜÆ÷µÄÊäÈë»îÂç¶ÈΪ200mV£¨¼´£¨V+£©-£¨V-£©¡Ý0.2V£¬°µÊ¾ÐźÅ'0'£»£¨V+£©-£¨V-£©¡Ü-0.2V£¬°µÊ¾ÐźÅ'1'£©

ÓÉÓÚRS-485µÄÔ¶¾àÀë¡¢¶à½Úµã£¨32¸ö£©ÒÔ¼°´«ÊäÏ߳ɱ¾µÍµÄ¸öÐÔ£¬Ê¹µÃEIA RS-485³ÉΪ¹¤ÒµÀûÓÃÖÐÊý¾Ý´«ÊäµÄ³ß¶È¡£»ùÓÚ´Ë£¬RS-485µÄ×Ô¶¯»¯ÁìÓòµÄÀûÓü«¶È¿í·º£¬µ«ÊÇÔÚÏÖʵ¹¤³ÌÖÐRS-485×ÜÏßʹÓÃÒÀÈ»´æÔÚןöàÎÊÌ⣬ӰÏìÁ˹¤³ÌµÄÖÊÁ¿£¬Îª¹¤³ÌÊ©¹¤´øÀ´Á˺öàµÄ²»·½±ã¡£

ÓйØÄÚÈÝ

• PVC»¤Ì×±âƽµçÀ£º»·±£»úÄÜÊÇ·ñ´ï±ê
  £¿
• Ë«»¤Ì×±âƽµçÀ£º±í»¤Ì××ÊÁÏÈôºÎÑ¡Ôñ
  £¿
• PUR»¤Ì×±âƽµçÀ£ºÄÍÄ¥ÐÔÓÅÓÚPVCÂð
  £¿
• ¶àо±âƽµçÀ£ºµ¼Ìå·ÖÁз½Ê½ÓÐÄÄЩ
  £¿
• ÆÁ±ÎÐͱâƽµçÀ£ºÆÁ±Î½á¹¹´ó¾ÖÓÐÄÄЩ
  £¿
• ÄÍÓͱâƽµçÀ£ºÔÚÓÍÎÛ»·¾³ÖлúÄÜÊÇ·ñ²»±ä
  £¿
• ÄͳôÑõÍÏÁ´µçÀ£ºÔÚº¸½Ó»·¾³²û·¢ÈôºÎ
  £¿
• Ìî³äʽÍÏÁ´µçÀ£ºÌî³äÎïÊÇ·ñÓ°ÏìÊÙÃü
  £¿
• ÄÍ×ϱíÏßÍÏÁ´µçÀ£º»§±íÍÏÁ´ÊÇ·ñºÏÓÃ
  £¿
• ¿ÕµØ½á¹¹ÍÏÁ´µçÀ£ºÊÇ·ñÌáÉý¶¯Ì¬»úÄÜ
  £¿