如何选择一款合适RS232转RS485转换器 RS232~RS485转换器使用方法
RS232\u8f6c\u6362\u4e3aRS485\u7684\u63a5\u7ebf\u65b9\u6cd5\u6700\u597d\u6709\u56feRS232 TO RS485 \u8fde\u63a5\u53e3\u7535\u8def\u56fe\u4ecb\u7ecd\uff1a1\u3001 15 PIN\u516c\u63a5\u5934\u7b2c5\u811a\u3001\u7b2c6\u811a\u4e3a\uff0cI/O E\u3001I/O F\uff1b\u7b2c12\u811a\u3001\u7b2c13\u811a\u4e3a\uff0c+5V Out\u3001Ground\u30022\u3001 9 PIN\u6bcd\u63d2\u5934\u7b2c3\u811a\u3001\u7b2c4\u811a\u4e3a\uff0cRS-485B\u3001RS-485A\uff1b\u7b2c5\u811a\u3001\u7b2c9\u811a\u4e3aGround\u3001+5V\u30023\u3001 \u5c06\u7535\u963b\u4f9d\u4e0a\u56fe\u63a5\u81f3\u6700\u540e\u4e00\u9897\u88c5\u7f6e\u4e4b\u63a5\u5934\u4e0a(\u710a\u63a5\u7535\u963b\u65f6\uff0c\u8bf7\u52ff\u76f4\u63a5\u710a\u5728\u63a5\u5934\u4e0a)\u30024\u3001 \u4f7f\u7528RS485\u8054\u673a\u65f6\uff0c\u9700\u5148\u4f7f\u7528RS232\u901a\u8baf\u81f3\u9a6c\u8fbe\uff0c\u5199\u5165\u4ee5\u4e0b\u7a0b\u5e8f\u65b9\u53ef\u6267\u884cRS485\u8054\u673a\u529f\u80fd\uff0c\u7a0b\u5e8f\u4ee3\u7801\u5982\u4e0b\uff1aSADDR1OCHN(RS4,1,N,9600,1,8,C)END\u6700\u540e\u518d\u642d\u914dRS-232 \u8f6cRS-485\u8f6c\u6362\u5668\u5373\u53ef\u901a\u8baf\u3002
RJ45\u7f51\u7ebf\u63a5\u53e3 \u4ec5\u4ec5 \u662f \u63a5\u53e3\u5f62\u5f0f
\u81f3\u4e8e\u8bf4 \u7528 RJ45\u7f51\u7ebf\u63a5\u53e3 \u6765\u8fde\u63a5\u7ebf\u8def\u4f20\u8f93 \u4ee5\u592a\u7f51\u4fe1\u53f7 \u8fd8\u662f \u4e32\u53e3\u4fe1\u53f7\uff0c\u662f\u53e6\u5916 \u7684 \u95ee\u9898
\u4f60\u7528 \u4ec0\u4e48 \u6765\u63a5 \u79d1\u5bc6\u8003\u52e4\u673a\uff1f \u7535\u8111 \u5427\uff1f
\u79d1\u5bc6\u8003\u52e4\u673a \u53ea\u6709 RS232\uff0c\u90a3\u4e48 \u4f60\u7684 \u7535\u8111 \u4e5f\u5e94\u8be5 \u7528 RS232 \u63a5\u53e3
\u6709RS232\u63a5\u53e3\u7684\u8bdd\uff0c\u76f4\u63a5\u8fde\u63a5
\u6ca1\u6709RS232\u63a5\u53e3\u7684\u8bdd\uff0c\u5f97\u6269\u5c55 RS232 \u63a5\u53e3\uff0c\u518d\u8fde\u63a5
\u8bf7\u770b \u6b66\u6c49\u9e3f\u4f1f\u5149\u7535
E810 USB\u8f6cDB9 RS-232\u63a5\u53e3
建议用 外供电 的光电隔离转换器
如
E485TD RS-232/RS-485/RS-422有源高速隔离转换器
特点
▶ RS-232和RS-485/422高速光电隔离，RS422四线制全双工、RS485两线制半双工通信
▶ 独有串口保护电路，可带电热插拔
▶ 无需CTS流控，速率300～115.2Kbps自适应
▶ 内置600W/ms抗雷击保护和15KV抗静电保护
▶ 透明传输，波特率自适应，无需更改用户协议
▶ 专用工业导轨槽模块
绛旓細rs232杩炴帴鐢佃剳璁剧疆锛屾壘涓涓RS232杞帴鎴怳SB鐨勮浆鎺ュ彛锛岃浆鎴怳SB锛屾帴鍒扮數鑴戝嵆鍙俓r\nRS-232鏍囧噯鎺ュ彛锛堝張绉癊IARS-232锛夋槸甯哥敤鐨勪覆琛岄氫俊鎺ュ彛鏍囧噯涔嬩竴锛屽畠鏄敱缇庡浗鐢靛瓙宸ヤ笟鍗忎細(EIA)鑱斿悎璐濆皵绯荤粺鍏徃銆佽皟鍒惰В璋冨櫒鍘傚鍙婅绠楁満缁堢鐢熶骇鍘傚浜1970骞村叡鍚屽埗瀹氾紝鍏跺叏鍚嶆槸鈥滄暟鎹粓绔澶(DTE)鍜屾暟鎹氫俊璁惧(DCE)...
绛旓細R+鏄帴鏀朵俊鍙锋绔紝鑰孯-鏄帴鏀朵俊鍙疯礋绔紝搴旇鍒嗗埆浜嶵X+鍜孴R-瀵规帴銆
绛旓細搴旇鏄 ExpressCard杞琑232涓插彛 鏃㈢劧宸ヤ綔鍘熷洜锛屽氨閰 甯RS232涓插彛 鐨勭數鑴戝惂 鑱旀兂鏄槼 E46G 绯诲垪閲屽氨鏈 甯S232涓插彛 鐨勭瑪璁版湰鐢佃剳
绛旓細(2)RS-422/485涓茶鎺ュ彛鈶犲钩琛′紶杈揜S-422鐢RS-232鍙戝睍鑰屾潵銆備负鏀硅繘RS-232閫氫俊璺濈鐭侀熷害浣庣殑缂虹偣,RS-422瀹氫箟浜嗕竴绉嶅钩琛￠氫俊鎺ュ彛,灏嗕紶杈撻熺巼鎻愰珮鍒10Mbit/s,骞跺厑璁稿湪涓鏉″钩琛℃荤嚎涓婅繛鎺ユ渶澶10涓帴鏀跺櫒銆俁S-422鏄竴绉嶅崟鏈哄彂閫併佸鏈烘帴鏀剁殑鍗曞悜銆佸钩琛′紶杈撹鑼冦俁S-422鐨勬暟鎹俊鍙烽噰鐢ㄥ樊鍒嗕紶杈撴柟寮,涔熺О浣滃钩琛′紶杈...
绛旓細T/R+浠ｈ〃鐨勬槸TXD锛屾帴鍦ㄧ數璺澘涓婄殑鎺ユ敹RXD瑙掋俆/R-浠ｈ〃鐨勬槸RXD锛屾帴鍦ㄧ數璺澘涓婄殑鍙戦乀XD瑙掋侴ND鍜孷CC鏄緵5V鐨勭數銆傝繖涓儌涓滆タ涔熸槸鎼炰簡鎴戝揩涓澶╂墠寮勫ソ
绛旓細濡傛灉鏄RS232杞485鐨勮瘽 閭ｄ箞瀵逛簬232涓澶 鐩存帴鎺ュ埌PC涓插彛涓 485涓绔笌鍙﹀鐨485涓娈垫牴鎹 D+ 鎺+ ,D-鎺-灏卞彲浠ヤ簡 422濂藉儚鏄4 绾块氳鏂瑰紡 T+鎺 T+ ,R+鎺 R-
绛旓細PC(D鍨9瀛) DVP PLC锛堝渾褰8閽堬級RS232鐨勬帴绾挎柟寮 1- DCD 杞芥尝妫娴嬨2 -RXD 鎺ユ敹鏁版嵁銆3 -TXD 鍙戦佹暟鎹4- DTR 鏁版嵁缁堢鍑嗗濂姐5 -SGND淇″彿鍦扮嚎銆6 -DSR鏁版嵁鍑嗗濂姐7 -RTS 璇锋眰鍙戦併8 -CTS 娓呴櫎鍙戦/9 R-I 鎸搩鎻愮ず 8閽堝渾鍙ｅ拰D9娌℃湁鏍囧噯鐨勫畾涔夛紝鐢ㄦ埛鍙互鑷敱瀹氫箟锛屼絾鏄竾鍙樹笉绂诲叾...
绛旓細鍒板伐鎺у競鍦轰笂涔癛485/R232鐨杞崲鍣灏辫浜嗐
绛旓細RS232涓夋牴绾 TX(鍙戦侊級RX(鎺ユ敹锛塆ND锛堟帴鍦帮級RS485浜屾牴绾 D+鎴朅 D-鎴朆 涓鑸湁杩欎袱绉嶆爣璇 RS422鍥涙牴绾 T+(鍙戦佹锛 T-锛堝彂閫佽礋锛 R+鎺ユ敹姝 R-鎺ユ敹璐 娣卞湷涔濇眽绉戞妧 涓插彛閫氫俊涓撳 232銆485銆422杞崲鍣 涓插彛鏈嶅姟鍣 鏃犵嚎WIFI涓插彛鏈嶅姟鍣 ...
绛旓細RS232 锛孯S485 鐨勫尯鍒 1.RS-232-C 鏄編鍥界數瀛愬伐涓氬崗浼 EIA 锛圗lectronic Industry Association 锛夊埗瀹氱殑涓绉嶄覆琛岀墿鐞 鎺ュ彛鏍囧噯銆俁S 鏄嫳鏂団滄帹鑽愭爣鍑嗏濈殑缂╁啓锛232 涓烘爣璇嗗彿锛孋 琛ㄧず淇敼娆℃暟銆俁S-232-C 鎬 绾挎爣鍑嗚鏈 25 鏉′俊鍙风嚎锛屽寘鎷竴涓富閫氶亾鍜屼竴涓緟鍔╅氶亾锛屽湪澶氭暟鎯呭喌涓嬩富瑕佷娇鐢ㄤ富閫氶亾锛...
