云南快乐十分走势图

RS232,RS422,RS485介绍及性能比较

云南快乐十分走势图RIQI:2018-05-30 / RENQI: / LAIYUAN:aolongjixie.com

RS232,RS422,RS485的由来

RS232,RS422,RS485DOUSHICHUANXINGSHUJUJIEKOUBIAOZHUN,ZUICHUDOUSHIYOUMEIGUODIANZIGONGYEXIEHUI(EIA)ZHIDINGBINGFABUDE。

RS232ZAI1962NIANFABU,MINGMINGWEIEIA-232-E,ZUOWEIGONGYEBIAOZHUNYIBAOZHENGBUTONGCHANGSHANGCHANPINZHIJIANDEJIANRONG。

RS422YOURS232FAZHANERLAI,WEIGAIJINRS232TONGXINJULIDUAN、SULVDIDEQUEDIAN,RS422DINGYILEYIZHONGPINGHENGTONGXINJIEKOU,JIANGCHUANSHUSULVTIGAODAO10MB/s,CHUANSHUJULIYANZHANGDAO4000YINGCHI(1219.2m)(SULVDIYU100KB/sSHI),BINGYUNXUZAIYITIAOPINGHENGZONGXIANSHANGLIANJIEZUIDUO10GEJIESHOUQI。RS422SHIYIZHONGDANJIFASONG、DUOJIJIESHOUDEDANXIANG、PINGHENGCHUANSHUGUIFAN,BEIMINGMINGWEITIA/EIA-422-A。

WEIKUOZHANYINGYONGFANWEI,EIAYOUYU1983NIANZAIRS422DEJICHUSHANGZHIDINGLERS485BIAOZHUN,ZENGJIALEDUODIAN、SHUANGXIANGTONGXINNENGLI,JIYUNXUDUOGEFASONGQILIANJIEDAOTONGYITIAOZONGXIANSHANG,TONGSHIZENGJIALEFASONGQIDEQUDONGNENGLIHECHONGTUBAOHUTEXING,KUOZHANLEZONGXIANGONGMOFANWEI,HOUMINGMINGWEITIA/EIA-485-A。YOUYUEIATICHUDEJIANYIBIAOZHUNDOUSHIYIRSZUOWEIQIANZHUI,SUOYIZAIGONGYETONGXINLINGYU,RENGRANXIGUANJIANGSHANGSHUBIAOZHUNYIRSZUOWEIQIANZHUICHENGWEI。

RS232,RS422,RS485性能比较

RS232,RS422,RS485性能比较
规定 RS232 RS422 RS485
工作方式 单端 差分 差分
节点数 1收1发 1发10收 1发32收
最大传输电缆长度 15.2m 1219.2m 1219.2m
最大传输速率 20kb/s 10mb/s 10mb/s
最大驱动输出电压 +/-25V -0.25~+6V -7~+12V
驱动器负载阻抗 3kΩ~7kΩ 100Ω 54Ω
驱动器输出信号电平(Min) 负载 +/-5~+/-15V +/-2V +/-1.5V
驱动器输出信号电平(Max) 空载 +/-25V +/-6V +/-6V
摆率(Max) 30V//μs N/A N/A
接收器输入电压范围 +/-15V -10V~+10V -7V~+12V
接收器输入门限 +/-3V +/-200mV +/-200mV
接收器输入电阻 3~7kΩ 4kΩ >12kΩ
驱动器共模电压   -3~+3V -1~+3V
接收器共模电压   -7~+7V -7~+12V

ZHEIXIEBIAOZHUNZHIDUIJIEKOUDEDIANQITEXINGZUOCHUGUIDING,ERBUSHEJIJIECHAJIAN、DIANLANHUOXIEYI,ZAICIJICHUSHANGYONGHUKEYIJIANLIZIJIDEGAOCENGTONGXINXIEYI。

RS232串行接口标准

RS232BIAOZHUNXIEYIDEQUANCHENGSHIEIA-RS232BIAOZHUN,QIZHONGEIADAIBIAOMEIGUODIANZIGONGYEXIEHUI,RSDAIBIAOTUIJIANBIAOZHUN,232SHIBIAOSHIHAO。TAGUIDINGLELIANJIEDIANLANHEJIXIE、DIANQITEXING,XINHAOGONGNENGJICHUANSONGGUOCHENG。

云南快乐十分走势图 RS232BIAOZHUNZUICHUSHIWEIYUANCHENGTONGXINLIANJIESHUJUZHONGDUANSHEBEIDTEYUSHUJUTONGXINSHEBEIDCEERZHIDINGDE。RS232BIAOZHUNZHONGSUOTIDAODE“FASONG”HE“JIESHOU”,DOUSHIZHANZAIDTEDELICHANGSHANG,ERBUSHIZHANZAIDCEDELICHANGSHANGLAIDINGYIDE。YOUYUZAIJISUANJIXITONGZHONG,WANGWANGSHICPUHEI/OSHEBEIZHIJIANCHUANSONGXINXI,LIANGZHEDOUSHIDTE,YINCISHUANGFANGDOUNENGFASONGHEJIESHOU。

MUQIANRS232SHIPCJIYUTONGXINGONGYEZHONGYINGYONGZUIGUANGFANDEYIZHONGCHUANXINGJIEKOU。RS232BEIDINGYIWEIYIZHONGZAIDISULVCHUANXINGTONGXINZHONGZENGJIATONGXINJULIDEDANDUANBIAOZHUN。RS232CAIQUBUPINGHENGCHUANSHUFANGSHI,JISUOWEIDANDUANTONGXIN,RUXIATU。

RS232通信

RS232通信

1.RS232电气特性

云南快乐十分走势图 EIA-RS232DUIDIANQITEXING、LUOJIDIANPINGHEGEZHONGXINHAOXIANGONGNENGDOUZUOLEGUIDING。

云南快乐十分走势图 ZAITxDHERxDSHANG:

云南快乐十分走势图 LUOJI1(MARK)=-3~-15V

LUOJI0(SPACE)=+3~+15V

云南快乐十分走势图 ZAIRTS,CTS,DSR,DTRHEDCDDENGKONGZHIXIANSHANG:

XINHAOYOUXIAO(JIETONG,ONZHUANGTAI,ZHENGDIANYA)=+3~+15V

XINHAOWUXIAO(DUANTONG,OFFZHUANGTAI,FUDIANYA)=-3~-15V

2.RS232连接器的机械特性

云南快乐十分走势图 LIANJIEQI:YOUYURS232BINGWEIDINGYILIANJIEQIDEWULITEXING,YINCI,CHUXIANLEDB-25,DB-15,DB-9GEZHONGLEIXINGDELIANJIEQI,QIYINJIAODEDINGYIYEGEBUXIANGTONG。ZAOQIDEPCJIHEXTJICAIYONGDB-25LIANJIEQI、ATJIJIYIHOUPUBIANSHIYONGDEDB-9。ZAIYANHUAGONGKONGJIJIGONGKONGMOKUAIDEYINGYONGYEDOUCAIYONGLEDB-9。DB-9JIEKOUDINGYIRUXIATU。

DB-9 接口定义

RS232 DB-9接口定义

JIEKOUDINGYIRUXIABIAO。

引脚号 描述
1 数据载波检出(Datacarrierdetection—DCD)
2 接收数据(Receiveddata—RxD)
3 发送数据(Transmitteddata—TxD)
4 数据终端准备好(Dataterminalready—DTR)
5 信号地(Signalground—SG)
6 数据装置准备好(Datasetready—DSR)
7 请求发送(Requesttosend—RTS)
8 允许发送(Cleartosend—CTS)
9 振铃提示(Ringing—RI )

DIANLANZHANGDU:ZAITONGXINSULVDIYU20KB/sSHI,RS232SUOZHIJIELIANJIEDEZUIDAWULIJULIWEI15m。SHIJIYINGYONGZHONG,DANGSHIYONG9600B/s,PUTONGSHUANGJIAOPINGBIXIANSHI,JULIKEDA30YAO35m。

DANGTONGXINJULIJIAOJINSHI,ZHIXUSHIYONGSHAOSHUJIGENXINHAOXIANJIUKESHIXIANSHUJUTONGXIN,ZUIJIANDANDEQINGKUANGXIAZHIXU3GENXIAN(FASONGXIAN、JIESHOUXIAN、XINHAODIXIAN)BIANKESHIXIANQUANSHUANGGONGYIBUCHUANXINGTONGXIN。

RS422与RS485串行接口标准

1.平衡传输

RS422,RS485YURS232BUYIYANG,SHUJUXINHAOCAIYONGCHAFENCHUANSHUFANGSHI,YECHENGZUOPINGHENGCHUANSHU,TASHIYONGYIDUISHUANGJIAOXIAN,CHUANSHUFANGSHIRUXIATU。

 RS422/485通信
RS422/485通信

云南快乐十分走势图 RS485DEXINHAOCHUANSONGCHUQUSHIHUIFENWEIZHENGFULIANGTIAOXIANLU,DANGDAODAJIESHOUDUANSHI,ZAIJIANGXINHAOXIANGJIANHAIYUANCHENGYUANLAIDEXINHAO。RUGUOJIANGYUANSHIXINHAOBIAOSHICHENGDT,ERBEIFENKAIDEXINHAOBIAOSHICHENGD+HED-,ZEYUANSHIXINHAOYULISANDEXINHAOYOUCHUANSONGDUANSONGCHUQUSHIDEYUNSUANGUANXIRUXIA:DT=(D+)-(D-)。TONGYANG,JIESHOUDUANZAIJIESHOUDAOXINHAOHOU,YEANZHAOSHANGSHIJIANGXINHAOHAIYUANCHENGYUANLAIDEYANGZI。

ZAIRS485ZHONGHAIYOUYIGESHINENGDUAN,ERZAIRS422ZHONGZHEISHIKEYONGKEBUYONGDE。SHINENGDUANYONGYUKONGZHIFASONGQUDONGQIYUCHUANSHUXIANDEQIEDUANYULIANJIE。DANGSHINENGDUANQIZUOYONGSHI,FASONGQUDONGQICHUYUGAOZUZHUANGTAI,CHENGZUODI3TAI,JITASHIYOUBIEYULUOJI1YU0DEDI3TAI。

2.RS422电气规定

云南快乐十分走势图 RS422BIAOZHUNQUANCHENGSHI“PINGHENGDIANYASHUZIJIEKOUDIANLUDEDIANQITEXING”,TADINGYILEJIEKOUDIANLUDETEXING。RUXIATU

RS422接口定义定义
RS422 DB-9接口定义定义

云南快乐十分走势图 YOUYUJIESHOUQICAIYONGGAOSHURUZUKANGHEFASONGQUDONGQI,BIRS232JUYOUGENGQIANGDEQUDONGNENGLI,GUYUNXUZAIXIANGTONGCHUANSHUXIANSHANGLIANJIEDUOGEJIESHOUJIEDIAN,ZUIDUOKEJIE10GEJIEDIAN。JIYIGEZHUSHEBEI(Master),QIYUWEICONGSHEBEI(Slave),CONGSHEBEIZHIJIANBUNENGTONGXIN,SUOYIRS422ZHICHIDIANDUIDUODESHUANGXIANGTONGXIN。RS4224XIANJIEKOUYOUYUCAIYONGDANDUDEFASONGHEJIESHOUTONGDAO,YINERBUBIKONGZHISHUJUFANGXIANG,GEZHUANGZHIZHIJIANRENHEBIXUDEXINHAOJIAOHUANJUNKEYIANRUANJIANFANGSHI(XON/XOFFWOSHOU)HUOYINGJIANFANGSHI(YIDUIDANDUDESHUANGJIAOXIAN)SHIXIAN。

RS422DEZUIDACHUANSHUJULIWEI1219.2m,ZUIDACHUANSHUSULVWEI10MB/s。QIPINGHENGSHUANGJIAOXIANDEZHANGDUYUCHUANSHUSULVCHENGFANBI,ZAI100KB/sSULVYIXIA,CAIKENENGDADAOZUIDACHUANSHUJULI。ZHIYOUZAIHENDUANDEJULIXIACAINENGHUODEZUIGAOSULVCHUANSHU。YIBAN100mZHANGDESHUANGJIAOXIANSHANGSUONENGHUODEDEZUIDACHUANSHUSULVJINWEI1MB/s。

云南快乐十分走势图 RS422XUYAOYIGEZHONGJIEDIANZU,YAOQIUQIZUZHIYUEDENGYUCHUANSHUDIANLANDETEXINGDIANZU。ZAIJINJULICHUANSHUSHIKEBUXUZHONGJIEDIANZU,JIYIBANZAI300mYIXIABUXUZHONGJIEDIANZU。ZHONGJIEDIANZUJIEZAICHUANSHUDIANLANDEZUIYUANDUAN。

3.RS485电气规定

YOUYURS485SHICONGRS422JICHUSHANGFAZHANERLAIDE,SUOYIRS485XUDUODIANQIGUIDINGYURS422XIANGSI,RUDOUCAIYONGPINGHENGCHUANSHUFANGSHI,DOUXUYAOZAICHUANSHUXIANSHANGJIEZHONGJIEDIANZUDENG。RS485KEYICAIYONG2XIANYU4XIANFANGSHI,2XIANZHIKESHIXIANZHENZHENGDEDUODIANSHUANGXIANGTONGXIN。ERCAIYONG4XIANLIANJIESHI,YURS422YIYANGZHINENGSHIXIANDIANDUIDUODETONGXIN,JIZHINENGYOUYIGEZHUSHEBEI(Master),QIYUWEICONGSHEBEI(Slave),DANTABIRS422YOUGAIJIN,WULUN4XIANHAISHI2XIANLIANJIEFANGSHIZONGXIANSHANGZUIDUOKEJIEDAO32GESHEBEI。

RS485有关电气规定见表
 

RS485YURS422DEBUTONGHAIZAIYUQIGONGMOSHUCHUDIANYASHIBUTONGDE,RS485SHI-7VDAO+12VZHIJIAN,ERRS422ZAI-7VZHI+7VZHIJIAN,RS485JIESHOUQIZUIXIAOSHURUZUKANGWEI12kΩ,ERRS42SHI4kΩ;RS485MANZUSUOYOURS422DEGUIFAN,SUOYIRS485DEQUDONGQIKEYIZAIRS422WANGLUOZHONGYINGYONG。

云南快乐十分走势图 RS485YURS422YIYANG,QIZUIDACHUANSHUJULIYUEWEI1219m,ZUIDACHUANSHUSULVWEI10MB/s。PINGHENGSHUANGJIAOXIANDEZHANGDUYUCHUANSHUSULVCHENGFANBI,ZAI100KB/sSULVYIXIA,CAIKENENGSHIYONGGUIDINGZUIZHANGDEDIANLANZHANGDU。ZHIYOUZAIHENDUANDEJULIXIACAINENGHUODEZUIGAOSULVCHUANSHU。YIBAN100mZHANGDESHUANGJIAOXIANZUIDACHUANSHUSULVJINWEI1MB/s。

云南快乐十分走势图 RS485XUYAOLIANGGEZHONGJIEDIANZU,QIZUZHIYAOQIUDENGYUCHUANSHUDIANLANDETEXINGDIANZU。ZAIDUANJULICHUANSHUSHIKEBUXUZHONGJIEDIANZU,JIYIBANZAI300mYIXIABUXUYAOZHONGJIEDIANZU。ZHONGJIEDIANZUJIEZAICHUANSHUDIANLANDELIANGDUAN。

YOUYURS485SHIBANSHUANGGONGTONGXIN,FASONGHEJIESHOUCAIYONGFENSHIDEFANGSHI,XITONGXUYAOPANDINGSHIFASONGHAISHIJIESHOU。DUIYUWU“SHUJULIUXIANGZIDONGGANZHI”GONGNENGDERS485TONGXINKOU,XUYAORUANJIANTONGGUORTSWOSHOUXINHAOJINXINGTONGZHI,BIANCHENGJIAOFANSUO,YINCIRS485CHUANKOUTONGXINKAYIBANDOUZENGJIALEZHUANMENDE“SHUJULIUXIANGZIDONGGANZHI”GONGNENG,SHIRS485RUANJIANDEKAIFAYURS232WANQUANXIANGTONG。

4.RS422与RS485的网络安装注意要点

RS422KEZHICHI10GEJIEDIAN,RS485ZHICHI32GEJIEDIAN,YINCIDUOJIEDIANGOUCHENGWANGLUO。WANGLUOTUOPUYIBANCAIYONGZHONGDUANPIPEIDEZONGXIANXINGJIEGOU,BUZHICHIHUANXINGHUOXINGXINGWANGLUO。ZAIGOUJIANWANGLUOSHI,YINGZHUYIYIXIALIANGDIAN。

DIYI,CAIYONGYITIAOSHUANGJIAOXIANDIANLANZUOWEIZONGXIAN,JIANGGEGEJIEDIANCHUANJIEQILAI,CONGZONGXIANDAOMEIGEJIEDIANDEYINCHUXIANZHANGDUYINGJINLIANGDUAN,YIBIANSHIYINCHUXIANZHONGDEFANSHEXINHAODUIZONGXIANXINHAODEYINGXIANGZUIDI。

RS422/485节点连接方式
RS422/485节点连接方式

云南快乐十分走势图 SHIJIYINGYONGZHONGCHANGJIANDEYIXIECUOWULIANJIEFANGSHI(a,c,e)HEZHENGQUEDELIANJIEFANGSHI(b,d,f)。a,c,eZHEI3ZHONGWANGLUOLIANJIEJINGUANBUZHENGQUE,ZAIDUANJULI、DISULVSHIRENGKENENGZHENGCHANGGONGZUO,DANSUIZHETONGXINJULIDEYANZHANGHUOTONGXINSULVDETIGAO,QIBULIANGYINGXIANGHUIYUELAIYUEYANZHONG,ZHUYAOYUANYINSHIXINHAOZAIGEZHILUMODUANFANSHEHOUYUYUANXINHAODIEJIA,HUIZAOCHENGXINHAOZHILIANGXIAJIANG。

DIER,YINGZHUYIZONGXIANTEXINGZUKANGDELIANXUXING,ZAIZUKANGBULIANXUDIANJIUHUIFASHENGXINHAODEFANSHE。XIAMIANJIZHONGQINGKUANGYICHANSHENGZHEIZHONGBULIANXUXING:ZONGXIANDEBUTONGQUDUANCAIYONGLEBUTONGDIANLAN,MOUYIDUANZONGXIANSHANGYOUGUODUOSHOUFAQIJINKAOZAIYIQIANZHUANG;GUOZHANGDEFENZHIXIANYINCHUDAOZONGXIAN。ZONGZHI,YINGGAITIGONGYITIAODANYI、LIANXUDEXINHAOTONGDAOZUOWEIZONGXIAN。

5.RS422与RS485传输线匹配

YIBANZHONGDUANPIPEICAIYONGZHONGJIEDIANZUFANGFA,RS422ZAIZONGXIANDIANLANDEYUANDUANBINGJIEDIANZU,RS485ZEYINGZAIZONGXIANDIANLANDEKAISHIHEMODUANDOUBINGJIEZHONGJIEDIANZU。ZHONGJIEDIANZUYIBANZAIRS422WANGLUOZHONGQU100Ω,ZAIRS485WANGLUOZHONGQU120Ω,XIANGDANGYUDIANLANTEXINGZUKANGDEDIANZU,YINWEIDADUOSHUSHUANGJIAOXIANDIANLANTEXINGZUKANGWEI100YAO200Ω。

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GONGSICHANPINHANGAIGONGYESHENGCHANSHEBEIKONGZHISHEBEIDIANZIKAIFA、QICHEMCUDIANZIKONGZHIXITONGFANGANSHEJI、SIFUKONGZHIBANPCBAJIAGONG、SHUKONGJICHUANGZHUBANPCBAJIAGONG,ZHINENGJIAJUDIANZIYANFA、3DDAYINJIKONGZHIBANPCBAJIAGONGDENGLINGYU。YEWULIUCHENGBAOKUODIANZIFANGANKAIFASHEJI、PCBSHENGCHAN、YUANQIJIANCAIGOU、SMTTIEPIANJIAGONG、YANGJIZHIZUODIAOSHI、PCBAZHONGXIAOPILIANGJIAGONGSHENGCHAN、HOUQIZHIBAOWEIHUYIZHANSHIPCBAJIAGONGFUWU。

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云南快乐十分走势图