广东11选5BIANPINQITONGXUNGUZHANGZHUYAOJIANCHAYIXIASANFANGMIANDENEIRONG：

(1)TONGXUNJIEKOUDEYINGJIANJIEXIANHEPEIZHI

硬件是通讯建立的基本条件，但是在实际运行中，发现变频器通讯故障很大一部分是来自硬件问题，尤其是EMC问题。因此，一旦通讯故障时，必须首先查通讯接口的配线，并需注意以下事项：变频器厂

① MEITAIBIANPINQIDEPEDUANJIUJINDANDIANJIEDI;

② MEITAIBIANPINQIDEDIXIANGNDLIANZAIYIQI;

③ RS485TONGXUNCAIYONGPINGBIDIANLAN，QIEPINGBIDIANLANCAIYONGDANDUANJIEDIFANGSHI，PINGBIDIANLANDEDIXIANHERS485TONGXUNMOKUAIDEWAIQIAOPEJIEZAIYIQI。ZAICAIYONGYISHANGBIAOZHUNPEIXIANRENGBUNENGJIEJUETONGXUNGUZHANGSHI，HAIKEYIJIXUCAIQUYIXIACUOSHI：

广东11选5① CAIYONGGELIDERS485TONGXUNMOKUAI;

广东11选5② DANGYOUYUGANRAOSHICONGGNDXIANCHUANRUBIANPINQIHUOWAIBUSHEBEIDE，DAOZHIBIANPINQIHUOWAIBUSHEBEIBUNENGZHENGCHANGGONGZUOSHI，KEDUANKAIGETAIBIANPINQIXIANGLIANDEGNDLIANXIAN。BIANPINQICHANG

(2)TONGXUNXIEYIDECANSHUSHEZHI

广东11选5CHANGGUIDEBIANPINQITONGXUNFENWEISANZHONG：

广东11选5① RS232JIEKOUYUSHANGWEIJIRS232TONGXUN;

广东11选5② TONGGUORS232KOUHOUZAIJIEDIAOZHIJIEDIAOQIMODEMYUSHANGWEIJILIANJI;

广东11选5③ RS485JIEKOUYUSHANGWEIJIRS485TONGXUN。YINCI，ZAIBIANPINQIZHONGBIXUSHEZHIXIANGDUIYINGDETONGXUNCANSHU。

(3)TONGXUNRUANJIANDEPEIZHIBIANPINQICHANG

广东11选5YOUYUHENDUOBIANPINQIXITONGDOUSHIJIANLIZAIZONGXIANKONGZHIJICHUSHANG，YINCI，ZONGXIANXITONGDERUANJIANPEIZHISHIJIANCHATONGXUNGUZHANGDENANDIAN。ZHIYOUJIANGTONGXUNRUANJIANGUZHANGPAICHULE，BIANPINQIDETONGXUNGUZHANGCAIHUICHEDIXIAOCHU。BIANPINQICHANG