RS485用戶可以根據(jù)情況選擇其中的式通訊。下文是該變頻器通訊協(xié)議的詳細232-485232-485主機為232-485232-485主機為主機為9－1從機JD-從機JD-從機JD-主機JD-

9－2RS485PLC默認數(shù)據(jù)格式為：1，7，29600bps，P3.09～P3.12ASCIIASCII協(xié)議格式從從主幀機機機頭地地命址址令 從從主幀機機機頭地地命址址令 頭尾224422從從從幀機機機頭地地響址址應 從從從幀機機機頭地地響址址應 頭尾224422ASCIIASCII3AH行、A、B、C、D、E、F，小寫ASCII字母a、b、c、d、e、為字符ASCIILRC（縱向冗長檢測）方法。錯誤檢測域包含兩個ASCII字符。1位起始位，7位數(shù)據(jù)位，21位起始位，7位數(shù)據(jù)位，1位奇校驗位，11位起始位，7位數(shù)據(jù)位，1位偶校驗位，112120～247，001。數(shù)據(jù)含義：主機發(fā)送令，雙字節(jié)ASCII碼，，低位在后。變?yōu)?485從機功能碼參數(shù)命令為B(十六進制為

B(十六進制為對于主機，輔助索引、命令 于配合主機命令實現(xiàn)具體功能 數(shù)據(jù)類型：164字節(jié)。ASCII9-19-1E2PROMASCII計算方法：對于消息發(fā)送端，LRC的計算方法是將要發(fā)送消息中“從機地址”到“運行數(shù)據(jù)”沒有轉(zhuǎn)換成ASCII碼的全部字節(jié)連續(xù)累加，結(jié)果丟棄進位，得到的8位字節(jié)按位取反，后再加1（轉(zhuǎn)換為補碼），最后轉(zhuǎn)換成ASCII碼，放入校驗區(qū)，高字節(jié)，低字節(jié)在后。對于消息接收端，采取同樣的LRCASCII9－23A3031303A30313030303030304630303130461控制,0D3034460D3A30313030303030460D3A3031303130303000313430390D0回應幀數(shù)據(jù)區(qū)為當前500Hz3A30313030303031460D3A3031303131303000313430380D0回應幀數(shù)據(jù)區(qū)為當前500Hz3A30313030303032460D3A3031303130303230314337460D回應幀數(shù)據(jù)區(qū)為當前380V3A30313030303033460D3A3031303130303330303546360D0回應幀數(shù)據(jù)區(qū)為當前05A3A30313030303034460D3A3031303130303230323846320D回應幀數(shù)據(jù)區(qū)為當前520V3A30313030303035460D3A3031303130303530303844310D回應幀數(shù)據(jù)區(qū)為當前40OC3A30313030303036460D3A3031303130303630333830440D回應幀數(shù)據(jù)區(qū)為當前負載電機轉(zhuǎn)速3A30313030303037460D無3A30313030303038460D3A3031303130303830303439320D0回應幀數(shù)據(jù)區(qū)為模擬AI1：100V3A30313030303039460D3A3031303130303930303439310D0回應幀數(shù)據(jù)區(qū)為模擬AI2：100V3A30313030303041460D3A3031303130304130303945420D回應幀數(shù)據(jù)區(qū)為運行9小時態(tài)3A30313030303046450D3A3031303130304630303545410D無3A30313030303030460D3A3031303230303031333836300D001H回應幀數(shù)據(jù)區(qū)為當前5000HZ頻率3A3031303030303031383836313A3031303330303031333836310D03A3031303030303031383836303A3031303430303031333836300D0運行3A30313030303030460D3A3031303530303031333835460D0回應幀數(shù)據(jù)區(qū)為當前5000HZ3A30313030303030460D3A3031303630303031333835450D0回應幀數(shù)據(jù)區(qū)為當前5000HZ定3A3031303030303030463430333A3031303730303030313430330D0正轉(zhuǎn)運行設定頻率=5定3A3031303030303030463530313A3031303830303030313530310D0反轉(zhuǎn)運行設定頻率=53A30313030303030460D3A3031303930303030313530300D0回應幀數(shù)據(jù)區(qū)為當前500HZ運行3A30313030303030460D3A3031304130303030313430300D0回應幀數(shù)據(jù)區(qū)為當前3A30313030303030460D3A3031304230303030313446460D0回應幀數(shù)據(jù)區(qū)為當前3A30313030303030460D3A3031304330303030313446450D0回應幀數(shù)據(jù)區(qū)為當前3A30313030303030460D3A3031304430303030313446440D0回應幀數(shù)據(jù)區(qū)為當前 3A30313030303030460D3A3031304537303031333834460D0回應幀數(shù)據(jù)區(qū)為當前500HZ停車3A30313030303030460D3A3031304630303031333835350D05P03A30313130303031450D3A3031313030303130303345420D1輔助索引為功能碼組P03A30313130303032450D3A3031313030303230463033450D0P23A30313130323031450D3A3031313032303130303245410D0輔助索引為功能碼組1。P201=0讀功能碼功能碼組號超過范3A30313130413031450D3A3031393041303130323035330D110位＝02H(功能碼組號讀功能碼功能碼號3A30313130313231430D3A3031393031323130333034410D121H超出范位＝03H(功能碼號超P0＝53A3031313030303230463446373A3031313130303230313446370D00，命令索引為功2。P002=5，，1P32543A3031313033313930463344453A3031313133313930313344450D03，命令索引為功25。P325=4輸入用戶P000=3。解除3A3031313030303030303345423A3031313130303030303036420D1輸入用戶輸入正確，用戶P000變?yōu)?。輸入用戶P000=3。3A3031313030303030303345423A3031393130303030343036410D1輸入用戶，輸高8位＝04H(頻率數(shù)字P002戶3A3031313130303230313446370D3A3031393130303230313036420D1由于用戶不等于08位＝01H(用戶不0錯誤碼)。寫功能碼功能碼組號超過范3A3031313041303030303345313A3031393141303030323036320D10AH超出8位＝02H(功能碼組3A3031313032333030303342393A3031393132333030333033390D130H超出范位＝03H(功能碼號超寫頻率輸入通道選P03A3031313030303130463446383A3031393130303130353036380D1回應幀數(shù)據(jù)區(qū)高8＝05H(功能碼數(shù)據(jù)超寫故障設定頻率功能3A3031313036303130313943453A3031393136303130373036300D1回應幀數(shù)據(jù)區(qū)高8＝07H(功能碼數(shù)據(jù)為寫加方式選擇功能碼變頻器在3A30313130303043303031450D3A3031393130304330383035410D1P013功能碼在運行中8位＝08H(功能碼數(shù)據(jù)在運行中不能查詢從機軟件版本3A30313130303030450D3A30313132303030303131420D1回應幀數(shù)據(jù)區(qū)為從機V101，。9－3，。無12222022122224223A30313030303730303046413034390D3A30313030303030313046413034460D3A30313030303030323030303046440D允許主機控制不允許設置頻3A30313030303030333046413034440D不允許主機控制允許設置頻3A30313030303030343030303046420D不允許主機控制,3A303130303030303046460D3A30313030303030313046413034460D0A；(409－4無1222202212222422位01否否是否是否是否是否是——3A303130313030304645460D3A30313031303030463030303545410D0A；(當前變頻器反轉(zhuǎn)運行表9－5從機功能碼參無12240221224422P002功能碼的參數(shù),索引區(qū)=0002H，輔助索引＝00H，命令索引=02H。P111功能碼的參數(shù),索引區(qū)=010BH，輔助索引＝01H，命令索引=0BH。 05162738493A303131303032303145430D0A；(P201功能碼3A30313130303230313031463446370D0A；(P201=59－6 12244221224422P002功能碼的參數(shù),索引區(qū)=0002H，輔助索引＝00H，命令索引=02H。值，，低位在后。當命令幀錯誤時，從機響應錯誤幀給主機，錯誤幀如下： 05162738493A30313131303331393031463344450D0A；(P325=43A30313131303331393031463344450D0A；(P325=4RTU協(xié)議格式 83.5從主故命設 字符機機障令定定校校字符以上地命索索數(shù)數(shù)驗驗以上停頓址令引引據(jù) 停 12345678從從故命回回機機障令應應校校地響索索數(shù)數(shù)驗驗址應引引據(jù)據(jù)11222RTU模式消息幀以發(fā)送至少要以3.5個至少3.5個字符時間的停頓標定消息的結(jié)束。1位起始位，8位數(shù)據(jù)位，21位起始位，8位數(shù)據(jù)位，1位奇校驗位，11位起始位，8位數(shù)據(jù)位，1位偶校驗位，11212數(shù)據(jù)含義：主機發(fā)送令，一個字節(jié)的16進制數(shù)字節(jié)的最變?yōu)?。舉例如下：485B(十六進制為

B(十六進制為對于主機，輔助索引、命令 于配合主機命令實現(xiàn)具體功能 16216CRC16位的二進制值。它由發(fā)送端計算后加入到繼續(xù)接收下一幀數(shù)據(jù)。CRCMODBUSRTU消息幀在最后一個傳輸字符之后，一個至少3.59－7RTU令010000000F041變頻器當前允許主4001010000F390回應幀數(shù)據(jù)區(qū)為當前運行頻率400101000101010001016D0回應幀數(shù)據(jù)區(qū)為當501010002D10101000201DC回應幀數(shù)據(jù)區(qū)為當380V0101000301010003000C000101000401010004027D回應幀數(shù)據(jù)區(qū)為當520V0101000501010005002C回應幀數(shù)據(jù)區(qū)為當40OC010100060101000603E8DCB5回應幀數(shù)據(jù)區(qū)為當前負載電機轉(zhuǎn)速100001010007無010100080101000800BC0010100090101000900ED0回應幀數(shù)據(jù)區(qū)為模0101000A0101000A0009DC0E回應幀數(shù)據(jù)區(qū)為運9小時0101000F0101000F0005CC0A無當前變頻器反轉(zhuǎn)運=010200000102000001780回應幀數(shù)據(jù)區(qū)為當501030000F4450103000001450500Hz0104000058F00104000002F00600Hz。010500000105000002CD0回應幀數(shù)據(jù)區(qū)為當601060000010600000289060107000088B90107000013B90=5001080000F4E00108000001F4E01C0=501090000D10109000002DD0回應幀數(shù)據(jù)區(qū)為當6010A000021010A000001990回應幀數(shù)據(jù)區(qū)為當前點動設定頻率5010B0000010B000001F4A41C0回應幀數(shù)據(jù)區(qū)為當前點動設定頻率5010C0000C1010C000001110回應幀數(shù)據(jù)區(qū)為當前點動設定頻率5010D0000010D0000012C0回應幀數(shù)據(jù)區(qū)為當前點動設定頻率500HZ010E0000010E07回應幀數(shù)據(jù)區(qū)為當前設定頻率50010F000031010F000001550變頻器直接輸5P001100001C10110000100D110，命令索引P00201100002011000020F640輔助索引為功能碼功能碼號2P002=40P201100201C00110020100110輔助索引為功能碼功能碼號1P201=00110100A8D0190100A02E4110超出高8位＝02H(功能碼組號超限錯誤011001210390121H超出8位＝03H(501110002F45C01110002015C0輔助索引為功能碼功能碼號2P002=5P325＝499HZ01110319F36D01110319016D0輔助索引為功能碼功能碼號25P325=4P0003除保護0111000003BD0111000000FD1輸入用戶P0000。P00030111000003BD0191000004FE1輸入用戶據(jù)區(qū)高8位＝04H(用戶輸0。01110002F45C01910002015C1由于用戶不等8位＝01H(0錯誤01110A0003BE01910A000200FEAF10AH超8位＝02H(功0111023003BC0191023003FD130H超出8位＝03H(P001＝50001110001F4AC0191000105AE1回應幀數(shù)據(jù)區(qū)高8位＝05H(功能碼數(shù)01110601196D01910