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wanzhen2006
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樓主  發(fā)表于: 2013-12-03 23:31
三菱FX3U PLC與三菱D700變頻器通信問(wèn)題...

IVCK    運行監控
IVDR    運行控制
IVRD    讀出參數
IVWR   寫(xiě)入參數

用RS-485-BD板   PLC離6臺變頻器1米遠，要加終端電阻嗎？

三菱FX3U PLC與6臺三菱D700變頻器通信，問(wèn)題是接0號站，1號站，2號站 正常，接3號站就不能通信了 是什么問(wèn)題？

不是有專(zhuān)用指令可以連接8臺變頻器嗎，連接三臺可以 四臺就不行，為什么？？？？納悶。。。
做工控人.不停學(xué)習.分享.交流.
wanzhen2006
做工控人.不停學(xué)習.分享.交流.
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1樓  發(fā)表于: 2013-12-04 15:13
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做工控人.不停學(xué)習.分享.交流.

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