rs485总线在进行通信时，安全性怎么样？其安全措施有哪些？ RS485网络时除了两根数据通信
RS485\u603b\u7ebf\u7684\u901a\u4fe1\u8ddd\u79bb\u662f\u591a\u5c11?RS485\u603b\u7ebf\u7684\u901a\u4fe1\u8ddd\u79bb\u548c\u9891\u7387\u6709\u5173\uff0c\u7406\u8bba\u7684\u6700\u957f\u901a\u8baf\u8ddd\u79bb\u7ea6\u4e3a1200\u7c73\uff0c\u4e00\u822c\u6700\u5927\u652f\u630132\u4e2a\u8282\u70b9\uff0c\u4f46\u5916\u52a0\u5e26\u9694\u79bb\u7684RS485\u4e2d\u7ee7\u5668\uff0c\u5e76\u4fdd\u8bc1\u901a\u4fe1\u7ebf\u8def\u5408\u7406\uff0c\u53ef\u4ee5\u8ba9\u901a\u4fe1\u8ddd\u79bb\u5ef6\u957f\u51e0\u5343\u7c73\u3002
\u4e4b\u524d\u6211\u4eec\u662f\u7528ZLG\u7684RSM485ECHT\uff0c\u5176A-B\u5dee\u5206\u9600\u503c\u4e3a -200mV<VA-VB<-40mV\uff0c\u53ef\u4ee5\u770b\u5230-40mV<0V\uff0c\u8fd9\u5c31\u610f\u5473\u7740\u5373\u4f7f\u52a0\u4e86\u7ec8\u7aef\u7535\u963b\uff0c\u4e5f\u80fd\u4fdd\u8bc1\u603b\u7ebf\u5904\u4e8e\u6b63\u5e38\u72b6\u6001\uff0c\u8fd8\u884c\u5427
\u4f60\u90fd\u4e0d\u77e5\u9053\u4ec0\u4e48\u662fRS485\u901a\u8baf\uff0c485\u901a\u8baf\u53ea\u8981A\u3001B\u8fde\u6839\u6570\u636e\u7ebf\u5c31\u53ef\u4ee5\u4e86\u3002RS232\u624d\u8981\u4e09\u6839\u7ebf\u3002
\u667a\u80fd\u4eea\u8868\u662f\u968f\u774080\u5e74\u4ee3\u521d\u5355\u7247\u673a\u6280\u672f\u7684\u6210\u719f\u800c\u53d1\u5c55\u8d77\u6765\u7684\uff0c\u73b0\u5728\u4e16\u754c\u4eea\u8868\u5e02\u573a\u57fa\u672c\u88ab\u667a\u80fd\u4eea\u8868\u6240\u5784\u65ad\u3002\u7a76\u5176\u539f\u56e0\u5c31\u662f\u4f01\u4e1a\u4fe1\u606f\u5316\u7684\u9700\u8981\uff0c\u4f01\u4e1a\u5728\u4eea\u8868\u9009\u578b\u65f6\u5176\u4e2d\u7684\u4e00\u4e2a\u5fc5\u8981\u6761\u4ef6\u5c31\u662f\u8981\u5177\u6709\u8054\u7f51\u901a\u4fe1\u63a5\u53e3\u3002\u6700\u521d\u662f\u6570\u636e\u6a21\u62df\u4fe1\u53f7\u8f93\u51fa\u7b80\u5355\u8fc7\u7a0b\u91cf\uff0c\u540e\u6765\u4eea\u8868\u63a5\u53e3\u662fRS232\u63a5\u53e3\uff0c\u8fd9\u79cd\u63a5\u53e3\u53ef\u4ee5\u5b9e\u73b0\u70b9\u5bf9\u70b9\u7684\u901a\u4fe1\u65b9\u5f0f\uff0c\u4f46\u8fd9\u79cd\u65b9\u5f0f\u4e0d\u80fd\u5b9e\u73b0\u8054\u7f51\u529f\u80fd\u3002\u968f\u540e\u51fa\u73b0\u7684RS485\u89e3\u51b3\u4e86\u8fd9\u4e2a\u95ee\u9898\u3002
1. RS-485\u7684\u7535\u6c14\u7279\u6027\uff1a\u903b\u8f91\u201c1\u201d\u4ee5\u4e24\u7ebf\u95f4\u7684\u7535\u538b\u5dee\u4e3a+\uff082\u20146\uff09 V\u8868\u793a\uff1b\u903b\u8f91\u201c0\u201d\u4ee5\u4e24\u7ebf\u95f4\u7684\u7535\u538b\u5dee\u4e3a-\uff082\u20146\uff09V\u8868\u793a\u3002\u63a5\u53e3\u4fe1\u53f7\u7535\u5e73\u6bd4RS-232-C\u964d\u4f4e\u4e86\uff0c\u5c31\u4e0d\u6613\u635f\u574f\u63a5\u53e3\u7535\u8def\u7684\u82af\u7247\uff0c \u4e14\u8be5\u7535\u5e73\u4e0eTTL\u7535\u5e73\u517c\u5bb9\uff0c\u53ef\u65b9\u4fbf\u4e0eTTL \u7535\u8def\u8fde\u63a5\u3002 \u3000\u30002. RS-485\u7684\u6570\u636e\u6700\u9ad8\u4f20\u8f93\u901f\u7387\u4e3a10Mbps \u3002 \u3000\u30003. RS-485\u63a5\u53e3\u662f\u91c7\u7528\u5e73\u8861\u9a71\u52a8\u5668\u548c\u5dee\u5206\u63a5\u6536\u5668\u7684\u7ec4\u5408\uff0c\u6297\u5171\u6a21\u5e72\u6270\u80fd\u529b\u589e\u5f3a\uff0c\u5373\u6297\u566a\u58f0\u5e72\u6270\u6027\u597d\u3002 \u3000\u30004. RS-485\u6700\u5927\u7684\u901a\u4fe1\u8ddd\u79bb\u7ea6\u4e3a1219M\uff0c\u6700\u5927\u4f20\u8f93\u901f\u7387\u4e3a10Mb/S\uff0c\u4f20\u8f93\u901f\u7387\u4e0e\u4f20\u8f93\u8ddd\u79bb\u6210\u53cd\u6bd4\uff0c\u5728100Kb/S\u7684\u4f20\u8f93\u901f\u7387\u4e0b\uff0c\u624d\u53ef\u4ee5\u8fbe\u5230\u6700\u5927\u7684\u901a\u4fe1\u8ddd\u79bb\uff0c\u5982\u679c\u9700\u4f20\u8f93\u66f4\u957f\u7684\u8ddd\u79bb\uff0c\u9700\u8981\u52a0485\u4e2d\u7ee7\u5668\u3002RS-485\u603b\u7ebf\u4e00\u822c\u6700\u5927\u652f\u630132\u4e2a\u8282\u70b9\uff0c\u5982\u679c\u4f7f\u7528\u7279\u5236\u7684485\u82af\u7247\uff0c\u53ef\u4ee5\u8fbe\u5230128\u4e2a\u6216\u8005256\u4e2a\u8282\u70b9\uff0c\u6700\u5927\u7684\u53ef\u4ee5\u652f\u6301\u5230400\u4e2a\u8282\u70b9\u3002
RS232\u4f7f\u752812V,0,-12V\u7535\u538b\u6765\u8868\u793a\u903b\u8f91\uff0c\uff08-12V\u8868\u793a\u903b\u8f911\uff0c12V\u8868\u793a\u903b\u8f910\uff09\uff0c\u5168\u53cc\u5de5\uff0c\u6700\u5c113\u6761\u901a\u4fe1\u7ebf\uff08RX,TX,GND\uff09\uff0c\u56e0\u4e3a\u4f7f\u7528\u7edd\u5bf9\u7535\u538b\u8868\u793a\u903b\u8f91\uff0c\u7531\u4e8e\u5e72\u6270\uff0c\u5bfc\u7ebf\u7535\u963b\u7b49\u539f\u56e0\uff0c\u901a\u8baf\u8ddd\u79bb\u4e0d\u8fdc\uff0c\u4f4e\u901f\u65f6\u51e0\u5341\u7c73\u4e5f\u662f\u53ef\u4ee5\u7684\u3002 \u3000\u3000RS422\uff0c\u5728RS232\u540e\u63a8\u51fa\uff0c\u4f7f\u7528TTL\u5dee\u52a8\u7535\u5e73\u8868\u793a\u903b\u8f91\uff0c\u5c31\u662f\u4e24\u6839\u7684\u7535\u538b\u5dee\u8868\u793a\u903b\u8f91\uff0cRS422\u5b9a\u4e49\u4e3a\u5168\u53cc\u5de5\u7684\uff0c\u6240\u4ee5\u6700\u5c11\u89814\u6839\u901a\u4fe1\u7ebf\uff08\u4e00\u822c\u989d\u5916\u5730\u591a\u4e00\u6839\u5730\u7ebf\uff09\uff0c\u4e00\u4e2a\u9a71\u52a8\u5668\u53ef\u4ee5\u9a71\u52a8\u6700\u591a10\u4e2a\u63a5\u6536\u5668\uff08\u5373\u63a5\u6536\u5668\u4e3a1/10\u5355\u4f4d\u8d1f\u8f7d\uff09\uff0c\u901a\u8baf\u8ddd\u79bb\u4e0e\u901a\u8baf\u901f\u7387\u6709\u5173\u7cfb\uff0c\u4e00\u822c\u8ddd\u79bb\u77ed\u65f6\u53ef\u4ee5\u4f7f\u7528\u9ad8\u901f\u7387\u8fdb\u884c\u901a\u4fe1\uff0c\u901f\u7387\u4f4e\u65f6\u53ef\u4ee5\u8fdb\u884c\u8f83\u8fdc\u8ddd\u79bb\u901a\u4fe1\uff0c\u4e00\u822c\u53ef\u8fbe\u6570\u767e\u4e0a\u5343\u7c73\u3002 \u3000\u3000RS485\uff0c\u5728RS422\u540e\u63a8\u51fa\uff0c\u7edd\u5927\u90e8\u5206\u7ee7\u627f\u4e86422\uff0c\u4e3b\u8981\u7684\u5dee\u522b\u662fRS485\u53ef\u4ee5\u662f\u534a\u53cc\u5de5\u7684\uff0c\u800c\u4e14\u4e00\u4e2a\u9a71\u52a8\u5668\u7684\u9a71\u52a8\u80fd\u529b\u81f3\u5c11\u53ef\u4ee5\u9a71\u52a832\u4e2a\u63a5\u6536\u5668\uff08\u5373\u63a5\u6536\u5668\u4e3a1/32\u5355\u4f4d\u8d1f\u8f7d\uff09\uff0c\u5f53\u4f7f\u7528\u963b\u6297\u66f4\u9ad8\u7684\u63a5\u6536\u5668\u65f6\u53ef\u4ee5\u9a71\u52a8\u66f4\u591a\u7684\u63a5\u6536\u5668\u3002\u6240\u4ee5\u73b0\u5728\u5927\u591a\u6570\u5168\u53cc\u5de5485\u9a71\u52a8/\u63a5\u6536\u5668\u5bf9\u90fd\u662f\u6807\uff1aRS422/485\u7684\uff0c\u56e0\u4e3a\u5168\u53cc\u5de5RS485\u7684\u9a71\u52a8/\u63a5\u6536\u5668\u5bf9\u4e00\u5b9a\u53ef\u4ee5\u7528\u5728RS422\u7f51\u7edc\u3002
绛旓細RS485鏈変袱绾垮埗鍜屽洓绾垮埗锛屽洓绾垮埗鍙兘瀹炵幇鐐瑰鐐閫氫俊锛岀洰鍓嶅緢灏戜娇鐢紝鐩墠锛屼簩绾垮埗琚箍娉涘簲鐢紝杩欐槸涓绉鎬荤嚎鎷撴墤缁撴瀯锛屽悓涓涓洿閬撴荤嚎鏈澶氬彲杩炴帴32涓妭鐐广備富鏈哄彂閫佹暟鎹椂锛岃甯︽湁浠庢簮鏈虹殑鍦板潃锛屾墍鏈変粠鏈洪兘浼氭敹鍒颁富鏈哄彂閫佺殑鏁版嵁锛屼絾鏄紝瑕佸皢鍦板潃涓庢湰鍦板湴鍧杩涜姣旇緝锛岃鎵ц鐩稿簲鐨勬搷浣滐紝鐒跺悗灏嗘暟鎹繑鍥炲埌...
绛旓細RS485鎬荤嚎鎺ュ彛鍗忚娣卞害瑙ｆ瀽 鍦ㄥ伐涓閫氫俊鐨勪笘鐣屼腑锛孯S485鎺ュ彛鍗忚鎵紨鐫鑷冲叧閲嶈鐨勮鑹诧紝瀹冪姽濡傛暟鎹紶杈撶殑楂橀熷叕璺紝杩炴帴鐫鍚勭鏅鸿兘璁惧銆傜‖浠跺眰锛屽鍚屼氦閫氫俊鍙风伅锛屽喅瀹氫簡鏁版嵁鐨勪紶杈撴柟寮忥紝姣斿閫氳繃鐢靛帇鍙樺寲锛0鎴1锛夋潵缂栫爜淇℃伅銆傚父瑙佺殑鎺ュ彛濡俁S-232鍜孯S-485锛屽叾涓璕S-485鏄负浜嗚В鍐砇S-232鐨勪竴浜涘眬闄愭ц岀敓锛...
绛旓細RS232涓RS485鎬荤嚎绔槸闅旂寮鐨勶紝杩欐牱杩涜闅旂璁捐鍙互鏈夋晥 鐨 鎶戝埗RS485鎬荤嚎涓婄殑骞叉壈浼犲鍒232绔備笁闅旂璁捐鐢佃矾 powerbus 鍦ㄨ姹閫氫俊璺 绂讳负鍑犲崄绫冲埌涓婂崈绫虫椂锛屽箍娉涢噰鐢≧S-485涓茶鎬荤嚎鏍囧噯銆俁S-485閲囩敤骞宠 鍙戦佸拰宸垎鎺ユ敹锛屽洜姝ゅ叿鏈夋姂鍒跺叡妯″共鎵扮殑鑳藉姏銆傞昏緫鈥1鈥濅互涓ょ嚎闂寸殑鐢靛帇宸负+锛2鈥6锛塚琛ㄧず...
绛旓細rS485鎬荤嚎涓湁鍑犲崄鍙拌澶囷紝涓绘満濡備綍鍖哄垎姣忎竴鍙拌澶囷紵鍦ㄥ鏈洪氫俊涓紝姣忓彴浠庢満鍧囧垎閰嶆湁涓涓粠鏈哄湴鍧锛屼富鏈轰笌浠庢満涔嬮棿杩涜涓茶閫氫俊鏃讹紝閫氬父鏄富鏈哄厛鍛煎彨鏌愪粠鏈哄湴鍧锛屽敜閱掕鍙粠鏈哄悗锛屼富銆佷粠涓ゆ満涔嬮棿杩涜鏁版嵁浜ゆ崲銆傝屾湭琚懠鍙殑浠庢満鍒欑户缁繘琛屽悇鑷殑宸ヤ綔銆備竴娆″畬鏁寸殑閫氫俊杩囩▼鍒嗕负3涓樁娈碉細涓绘満璇㈤棶銆佷粠...
绛旓細RS485鎬荤嚎浠嬬粛 绛旀锛歊S485鎬荤嚎鏄竴绉嶄覆琛閫氫俊鍗忚锛屼富瑕佺敤浜庡伐涓氶鍩熺殑璁惧闂撮氫俊銆傚畠閲囩敤宸垎淇″彿浼犺緭鏂瑰紡锛岃兘鏈夋晥鎶垫姉鐢电骞叉壈锛屾敮鎸侀暱璺濈閫氫俊鍜屽璁惧杩炴帴銆傝缁嗚В閲婏細RS485鎬荤嚎鏄竴绉嶅箍娉涘簲鐢ㄧ殑閫氫俊鍗忚锛屼富瑕佸湪宸ヤ笟棰嗗煙涓娇鐢ㄣ傚畠鐨勬牳蹇冪壒鐐规槸閲囩敤浜嗗樊鍒嗕俊鍙风殑浼犺緭鏂瑰紡銆傝繖绉嶄紶杈撴柟寮忓彲浠ユ湁鏁堟姷鎶楃數纾佸共鎵...
绛旓細浣RS485鎬荤嚎鍦鎶楀共鎵般佽嚜閫傚簲銆閫氫俊鏁堢巼绛夋柟闈粛瀛樺湪缂洪櫡锛屼竴浜涚粏鑺傜殑澶勭悊涓嶅綋甯镐細瀵艰嚧閫氫俊澶辫触鐢氳嚦绯荤粺鐦棯绛夋晠闅滐紝鍥犳鎻愰珮RS485鎬荤嚎绋冲畾鎬т笉瀹瑰皬瑙戙傚湪485鎬荤嚎绯荤粺鏂藉伐鏃跺繀椤讳弗鏍兼寜鐓ф柦宸ヨ鑼冩柦宸ワ紝鐗瑰埆搴旀敞鎰忎笅闈㈠嚑鐐广1銆485+鍜485锛嶆暟鎹嚎涓瀹氳浜掍负鍙岀粸銆2銆佸竷绾夸竴瀹氳甯冨鑲″睆钄藉弻缁炵嚎銆傚鑲℃槸涓轰簡...
绛旓細A銆丅鏄袱鏉閫氫俊绾跨殑鎺ョ嚎绔紝閫氬父鏍囨湁A⁺锛孊⁻锛屾槸鎸囩數骞崇殑楂樹綆銆傜敱浜RS485鐢佃矾鏄樊鍒嗗舰寮忕殑锛孉⁺锛孊⁻閮芥槸甯︾數鍘嬬殑锛屽父鏃堕棿鎺ュ湴鎴栨帴楂樼數骞抽兘浼氶犳垚RS485鐢佃矾鎹熷潖銆傞昏緫鈥1鈥濅互涓ょ嚎闂寸殑鐢靛帇宸负+2V~+6V琛ㄧず锛涢昏緫鈥0鈥濅互涓ょ嚎闂寸殑鐢靛帇宸负-2V~6V琛ㄧず銆傛帴鍙ｄ俊鍙风數骞...
绛旓細1. 宸垎淇″彿浼犺緭锛歊S485閲囩敤宸垎淇″彿杩涜鏁版嵁浼犺緭锛岃繖涓璁捐鏈夊姪浜庨檷浣庣幆澧冧腑鐨勭數纾佸共鎵帮紝纭繚鍦ㄥ櫔澹扮幆澧冧笅涔熻兘瀹炵幇鍙潬鐨勬暟鎹紶杈撱2. 鍗婂弻宸ラ氫俊鏂瑰紡锛歊S485鏀寔鍗婂弻宸ラ氫俊妯″紡锛屽嵆鏁版嵁鍙互鍦ㄥ悓涓鏃堕棿杩涜鍙戦佸拰鎺ユ敹锛屾彁楂樹簡閫氫俊鏁堢巼銆3. 澶氱珯閫氫俊鑳藉姏锛RS485鎬荤嚎鍏佽澶氫釜璁惧杩炴帴鍦ㄤ竴璧杩涜閫氫俊锛婊¤冻浜...
绛旓細3锛岄檮杩戞湁骞叉壈婧愩備緥濡傚彉棰戝櫒銆4锛屽竷绾挎嫇鎵戜笉鍚堣銆485鎬荤嚎鍙帴鍙楄強鑺遍摼鎷撴墤锛屽張鍙仛鎵嬫媺鎵嬨備笉鎺ュ彈鏄熷舰锛屾爲褰紝娣峰悎鍨嬫嫇鎵戙5锛岀敱浜庣嚎璺殑鍥炲０锛屽鑷撮氳闂銆傛墍浠ヨ鍔犲叆缁堢鐢甸樆鍚告敹鍥炲０銆傚挨鍏鍦ㄩ氳璺濈姣旇緝闀挎椂鍊欍6锛屽洜涓RS485鏄湁鏋佹ч摼 鎺ワ紝濡傛灉鎬荤嚎涓婃湁涓涓垨鑰呭涓粠绔橝B鎺ュ弽浜嗭紝鏄湁鍙兘浼...
绛旓細RS485閲囩敤鐢靛帇宸垎鏂瑰紡浼犺緭鏁版嵁锛岄噰鏍锋诞鍔ㄧ數鍘嬬殑浜ゆ浛鍙樺寲锛岀墿鐞嗗眰涓涓彂閫佺瀵瑰簲澶氫釜楂橀樆杈撳叆鐨勬柟寮忋傜敱浜庢帴鏀跺櫒鏄涓珮闃昏緭鍏ワ紝铏界劧鍙戦佺鏄帹鎸借緭鍑猴紝鍦ㄨ窛绂诲彂閫佺鐨勮繎绔紝鍏锋湁涓瀹氱殑骞叉壈鐢靛帇閫氳繃纾佽﹀悎鍏鎬荤嚎锛浜х敓鐨勭數鍘嬩細琚彂閫佺寮曟祦鍚告敹銆
