ÐÂÎÅ×ÊѶ
Modbus TCPÓëModbus RTU£ºÉîÈë½âÎöÁ½ÕßÖ®¼äµÄÇø±ð
2024-02-07


ModbusÊÇÒ»Öֹ㷺ʹÓõĹ¤ÒµÍ¨ÐÅЭÒ飬ÓÃÓÚÁ¬½Ó¹¤Òµµç×ÓÉ豸¡£ModbusЭÒéÓÐÁ½ÖÖÊ×ÒªµÄ´«Êäģʽ£ºModbus TCPºÍModbus RTU¡£¾¡¹ÜËüÃǶ¼»ùÓÚModbusºËÐÄЭÒ飬µ«ËüÃÇÔÚʵÏÖºÍÓ¦ÓÃÉÏÓÐһЩ¹Ø¼üµÄÇø±ð¡£±¾ÎĽ«¶ÔÕâÁ½ÖÖģʽ½øÐÐÏêϸµÄ±È½ÏºÍÅÙÎö¡£

1. ¸ÅÄîÓë±¾ÖÊ

Modbus RTUºÍModbus TCP¶¼ÊÇModbusЭÒéµÄÒ»²¿·Ö£¬ËüÃǵĺËÐĶ¼ÊÇ»ùÓÚModbus¼Ä´æÆ÷µØÖ·½øÐÐÊý¾Ý½»»»¡£ModbusЭÒ鶨ÒåÁËÏûÏ¢¡¢Êý¾ÝµÄ½á¹¹¡¢ÃüÁîºÍÓ¦´ð·½Ê½£¬²ÉÓÃÖ÷´Ó£¨Maser/Slave£©Í¨ÐÅģʽ¡£

2. ͨÐÅ·½Ê½

Modbus RTUÊ×Òª»ùÓÚÒì²½´®Ðд«Ê䣬ͨ³£Ê¹ÓõĽӿÚÓÐRS-232¡¢RS-485/422µÈ¡£ÕâÖÖͨÐÅ·½Ê½ÔÚÓÐÏߺÍÎÞÏß»·¾³Öж¼Óй㷺ӦÓ᣶øModbus TCPÔòÊÇ»ùÓÚÒÔÌ«ÍøÁ¬½Ó£¬ËüʹÓõÄÊÇTCP/IPЭÒé×åÖеÄTCPЭÒé¡£

3. Êý¾Ý´«Êä

Modbus RTUͨ¹ý¶þ½øÖÆÊý¾Ý·½Ê½Ö±½Ó´«ËÍÊý¾Ý£¬Êý¾ÝÓÉÊý¾Ý³¤¶È£¨Á½¸ö×Ö½Ú£¬±íʾµÄÊǼĴæÆ÷¸öÊý£©ºÍÊý¾ÝÕýÎÄ£¨M³ËÒÔ2¸ö×Ö½Ú£©×é³É¡£¶øModbus TCPÔòÊǽ«Ã¿×Ö½Ú¶þ½øÖÆÊý¾Ýת»»Îª¹Ì¶¨Á½Î»Ê®Áù½øÖÆ×Ö·û´®£¬ÔÙÒÀ´Î´®ÁªÔÚÒ»Æð£¬ÒÔTCPÂëÐÎʽ½øÐÐÊý¾Ý´«ËÍ¡£

4. УÑ鷽ʽ

ÓÉÓÚModbus RTUʹÓô®ÐÐͨÐÅ£¬ËüÐèÒª¶ÔÊý¾Ý½øÐÐУÑéÒÔÈ·±£Êý¾ÝµÄ׼ȷÐÔ¡£ÔÚModbus RTUÖУ¬³ýÁËÆæżУÑéÍ⣬ͨ³£»¹²ÉÓÃLRC£¨×ÝÏòÈßÓàУÑ飩»ò16λCRC£¨Ñ­»·ÈßÓàУÑ飩¡£¶øModbus TCPÔò²»ÐèÒª¶îÍâµÄУÑ飬ÒòΪTCPЭÒé±¾Éí¾ÍÊÇÒ»¸öÃæÏòÁ¬½ÓµÄ¿É¿¿Ð­Òé¡£

5. Ó¦Óó¡¾°

Modbus RTUÓÉÓÚÆä¼òµ¥¡¢¿É¿¿ºÍ³É±¾Ð§Òæ¸ßµÄÌص㣬¹ã·ºÓ¦ÓÃÓÚ¸÷ÖÖ¹¤ÒµÏÖ³¡É豸ÖС£¶øModbus TCPÔò¸ü¶àµØÓ¦ÓÃÓÚ»ùÓÚÒÔÌ«ÍøµÄ¹¤Òµ×Ô¶¯»¯ÏµÍ³ÖС£

 

¾¡¹ÜModbus TCPºÍModbus RTU¶¼ÊÇModbusЭÒéµÄ¹Ø¼ü×é³É²¿·Ö£¬µ«ËüÃÇÔÚʵÏÖ·½Ê½¡¢Í¨ÐŽӿÚ¡¢Êý¾Ý´«ÊäºÍУÑ鷽ʽµÈ·½ÃæÓÐ×ÅÃ÷ÏԵIJ»Í¬¡£Ñ¡ÔñºÏÊʵĴ«ÊäģʽÐèÒª¸ù¾Ý¾ßÌåµÄÓ¦Óó¡¾°ºÍÐèÇóÀ´¾ö¶¨¡£ÀýÈ磬¶ÔÓÚÐèÒª³¤¾àÀë´«Êä»òÎÞÏß´«ÊäµÄÓ¦Óã¬Modbus RTU¿ÉÄÜÊÇÒ»¸ö¸üºÃµÄÑ¡Ôñ£»¶ø¶ÔÓÚ»ùÓÚÒÔÌ«ÍøµÄ¹¤Òµ×Ô¶¯»¯ÏµÍ³£¬Modbus TCPÔò¸üΪÊÊÓá£

Ï£ÍûÕâƪÎÄÕÂÄÜЭÖúÄã¸üºÃµØÀí½âºÍÇø·ÖModbus TCPºÍModbus RTUÖ®¼äµÄ²»Í¬¡£ÔÚ¹¤ÒµÎïÁªÍøÉ̽磬¶ÔЭÒéºÍͨÐÅ·½Ê½ÓÐÉîÈëµÄÀí½âÊǷdz£¹Ø¼üµÄ£¬ËüÄÜЭÖú·¢¹ú¼ÊÌìÉúÓ®¼ÒÒ»´¥¼´·¢¸üÓÐЧµØÉè¼ÆºÍʵʩ¹¤Òµ×Ô¶¯»¯½â¾ö¹æ»®¡£

 


¹Ø×¢ÓÐÈË΢ÐŹ«ÖÚºÅ
Á˽â¸ü¶àÐÅÏ¢

sitemap¡¢µØͼ