CJ2M+CJ1W-SCU41-V1模塊做Modbus-RTU從站

1、CJ2M+CJ1W-SCU41-艱塊做Modbus-RTK站實驗時間：2011年11月8號實驗人員：汪強實驗設備：CJ2M-CPU33,CJ1W-SCU41-V1,Commix實驗目的：CJ1W-SCU41-W1modbus-rtuslave實驗步驟：1、系統(tǒng)概述，硬件搭建和接線CJ2M-CPU33力口CJ1W-SCU41-V1,SCU模塊安裝在CPU右側(cè)，蓋上端板,用XW2Z-200S-CV連接SCU模塊上的PORT2和電腦的串口。modbus-rtu協(xié)議規(guī)則如下圖：ItemDescriptionModeModbus-RTUslavemode(SeenoteLBaudrate1,200/2,

2、400/4,800/9,600/19,200/38,400/57,600/115,200/230,400bps(Seenote2.)Default:19,200bpsDatalength8bits(Seenote3JParityOdd,even,ornoneDefault:EvenStopbitsOddorevenparity:1bitNoparity:2bits(Seenote4.)Addresssettingrange1to247(broadcasting:0)Seenote5JFrameformatSlaveaddress:1byteFunctioncode:1byteData:0to2

3、52bytesCRCcode:2bytes2、CJ2M單元設置CPU先用USB和編程軟件在線雙擊IO表和單元設置-雷新工程-希新PLC1口ZM停止/程序模式力，數(shù)據(jù)類型宗符號2表和單元設置國森一國內(nèi)存卡:矗錯誤日志畫PLC時鐘Q內(nèi)存_翰程序-電新程序1（口。）停止境符號后段1母END功能塊PLCPORT2先把PLC切換到編程模式，然后點擊IO表中的選項菜單，找到創(chuàng)建，然后點擊確定,自己創(chuàng)建IO表。雙擊CJ1W-SCU41-V1,出現(xiàn)如下圖的設置，在顯示的參數(shù)組中選到SETTINGS。在顯示的參數(shù)組中選擇PORT2MODBUS-RTUSLAVESETTINGS,把從站地址改為1。這里如果從站地址

4、默認0,SCU模塊會報錯。3、COMMIX設置波特率和數(shù)據(jù)格式需要與SCU模塊一致富Commix1.3串口COM3三油赫.|1到口二J應用|廠DTRFRTS關(guān)閉串口|數(shù)據(jù)位B3校貓位畫3停止位F三1PModbusRTU看停顯示歌圖SASC廠忽略空格輸入P自動換行.顯示間隔清除顯示I7|國發(fā)送|-17回軍發(fā)力編程說明：Modbus-RTUA站的命令幀格式:SlaveaddressFunctioncodeDataCRC1byte1byte0to252bytes2bytes(Seenote.)功能碼如下：01:讀取位狀態(tài)02:讀取CIO區(qū)多位狀態(tài)03/04:讀取保持/輸入寄存器內(nèi)容05/0F:寫單個

5、/多個位06/10:寫單個/多個寄存器08:回路測試Functioncode(hexadecimal)FunctionModbusname01ReadsmultiplebitsfromtheCIO,Work,Holding,orAuxiliaryAreaofI/OmemoryReadCoils02ReadsmultiplebitsfromtheCIOAreaofI/Omemory.ReadDiscreteInputs03ReadsmultiplewordsfromtheDMorEMAreaofI/Omemory.ReadHoldingRegisters04Readsmultiplewordsf

6、romtheCIO;Work,Holding,orAuxiliaryAreaofI/Omemory.ReadInputRegisters05WritesabitinI/Omemory.WriteSingleCoil06WritesawordintheDMorEMAreaof1/Omemory.WriteSingleRegister08Executesanechobacktest.DiagnosticOFWritesmultiplebitsinI/Omemory.WriteMultipleCoils10WritesmultiplewordsintheDMorEMAreaofI/Omemory.W

7、riteMultipleRegisters實驗現(xiàn)象：01:讀取位狀態(tài)讀取CIO0中0-9位的狀態(tài)，共計10個位綠色為命令幀，藍色為反饋幀0101000000103DC6(31KS)01010236016F9c151413IN1110,93丁&5*321°CHQQOg00000|0100i101104個位地址是一個數(shù)字0101000000103DC603/04:讀取保持/輸入寄存器內(nèi)容讀取DM2000-2005中的值+0+1+2+3*4+5B020000C39008D019C3018101E1628010307D00006C545讀取CIO中100-105中的值01040064

8、000631D7（47.s）01040COC33OJ38019C1403152F00OCFRF6+0+1+23+4+5CI001000C33019C1403152Foooc0F:寫單個/多個位把200.00-200.09置101OFOC8000OA02FF033709（47.£）01OFOC8000OAD774151413121110a765432t0CIO0300000000111111111110:寫單個/多個寄存器分別往D100-D108寫入0-801100064000918000000010002000300040005000600070008AOA9（47ms）01100064000941DO11*0+1之+3*4+5*TY1Eaoioo|0000booi00。之000500040005000600070008RS-4859-pinsSub-DtypeconnectorpinassignmentPinnumberAbbreviationSignalnameI/O1SDASenddata-Output2SDBSenddata+Output3NCUnused-4NCUnused-5NCUnused-6RDAR