MODBUS通訊規(guī)約

1、 . 艾默生網(wǎng)絡(luò)能源文檔編號軟件版本文檔密級共8頁MONI10U111XY1001A1.001公開PSM-E10監(jiān)控單元MODBUS通訊規(guī)約擬制：余先耀審核：標(biāo) 準(zhǔn) 化：批準(zhǔn)： EMERSON PSM-E10 MODBUS 規(guī)約1、概述本文描述了我司的PSM-E10監(jiān)控單元MODBUS規(guī)約標(biāo)準(zhǔn)，PSM-E10監(jiān)控單元通過MODBUS規(guī)約和綜合自動化廠家的設(shè)備進(jìn)行數(shù)據(jù)接口，向上級監(jiān)控設(shè)備提供的通直流屏的各種運(yùn)行參數(shù)，接收上級監(jiān)控設(shè)備下發(fā)的命令，從而方便地實(shí)現(xiàn)四遙功能。2、引用標(biāo)準(zhǔn)MODICON公司的MODBUS PROTOCOL標(biāo)準(zhǔn)。3、物理接口通訊方式：串行RS232或RS485或RS422。

2、傳輸速率：600、1200、2400、4800、9600、19200、38400七種通訊波特率。字符格式：8位數(shù)據(jù)位、1位停止位、無校驗(yàn)。4、幀4.1幀結(jié)構(gòu)幀結(jié)構(gòu)如圖所示，每幀容包括：地址1BYTE，功能號1BYTE，數(shù)據(jù)nBYTE，校驗(yàn)2BYTE，PSM-E10采用MODBUS規(guī)約中的RTU方式，通訊幀以HEX碼傳送。地址（ADDR）功能號（FC）數(shù)據(jù)（DATA）校驗(yàn)（CRC）4.2 地址（ADDR）指監(jiān)控單元PSM-E10的地址，圍為1-254可設(shè)。4.3 功能號上級監(jiān)控程序PSM-E10監(jiān)控單元的命令代碼。4.4 數(shù)據(jù)下行命令幀是命令的附加信息，上行響應(yīng)幀是具體的數(shù)據(jù)。4.5 校驗(yàn)采用C

3、RC校驗(yàn)，CRC生成函數(shù)，請參閱附錄E容。5.命令解釋各命令必須嚴(yán)格按下面給出的格式下發(fā)，PSM-E10則按響應(yīng)格式響應(yīng)，否則PSM-E10不響應(yīng)。-表示根據(jù)實(shí)際數(shù)值填寫。5.1 讀遙信（DI）命令01H命令響應(yīng)Slave Address - Function Code 01HByte Count 02HData Lo -Data Hi -CRC Hi -CRC Lo -01H命令Slave Address - Function Code 01HStart Point Hi 00HStart Point Lo 00HNo.Point Hi 00HNo.Point Lo 0FHCRC Hi -C

4、RC Lo -03H命令響應(yīng)Slave Address - Function Code 03HByte Count 02HData Hi -Data Lo -CRC Hi -CRC Lo -03H命令Slave Address - Function Code 03HStart Point Hi 00HStart Point Lo 00HNo.Point Hi 00HNo.Point Lo 01HCRC Hi -CRC Lo -可通過FC=01H或FC=03H命令讀取DI，PSM-E10共有DI量15個(gè)點(diǎn)，必須一次全部讀入。各DI的表示參見附錄B。03H命令響應(yīng)Slave Address - F

5、unction Code 03HByte Count 12HData0 Hi -Data0 Lo -： ：Data8 Hi -Data8 Lo -CRC Hi -CRC Lo -5.2讀遙測(AI)命令03H命令Slave Address - Function Code 03HStart Point Hi 00HStart Point Lo 64HNo.Point Hi 00HNo.Point Lo 09HCRC Hi -CRC Lo -通過FC=03H命令讀取AI，PSM-E10共有AI量9個(gè)點(diǎn)，必須一次全部讀入。各AI的表示參見附錄C。5.3遙控命令05H命令Slave Address -

6、 Function Code 05HReg. Hi -HReg. Lo -HData Hi -HData Lo 00HCRC Hi -CRC Lo -05H命令響應(yīng)Slave Address - Function Code 05HReg. Hi -HReg. Lo -HData Hi -HData Lo 00HCRC Hi -CRC Lo -PSM-E10共有DO量2個(gè)點(diǎn)，Data Hi = FFH表示OFF，Data Hi = 00H表示ON如果控制成功則將命令原樣返回,如果控制不成功則不響應(yīng)附錄A：寄存器分配寄存器號寄存器類型000099DI100199AI200299DO控制寄存器附錄B

7、：DI信號表寄存器0位號信號名稱備注B1系統(tǒng)運(yùn)行方式0：自動，1：手動B2電池均浮充狀態(tài)0：均充，1：浮充B3系統(tǒng)絕緣下降0：正常，1：下降B4電池單體電壓異常0：正常，1：異常B5充電模塊通訊離線0：在線，1：離線B6絕緣儀通訊離線0：在線，1：離線B7電池儀通訊離線0：在線，1：離線B8母線電壓異常0：正常，1：異常B9電池組電壓異常0：正常，1：異常B10電池組充電過流0：正常，1：過流B11電池組熔芯熔斷0：正常，1：熔斷B12饋出支路跳閘0：正常，1：跳閘B13交流輸入空開跳閘0：正常，1：跳閘B14防雷器故障0：正常，1：故障B15交流停電0：正常，1：停電寄存器199保留附錄C：

8、AI信號表寄存器號信號名稱100屏交流輸入AB電壓101屏交流輸入BC電壓102屏交流輸入CA電壓103合閘母線電壓104控制母線電壓105負(fù)載電流106電池組電壓107電池組電流108電池房溫度109199保留每個(gè)AI量有兩個(gè)字節(jié)構(gòu)成,對應(yīng)關(guān)系為065535 è -500.0+500.0,計(jì)算關(guān)系如下( W = 上送的16BIT值, V = 實(shí)際的AI值)V = (W/32767 1)*500.0附錄D：DO信號表寄存器號信號名稱備注200系統(tǒng)運(yùn)行方式控制0000H：自動，F(xiàn)F00H：手動201電池均浮充控制0000H：均充，F(xiàn)F00H：浮充202299保留無效PSM-E10必須處

9、于手動運(yùn)行方式，才可控制電池進(jìn)行均浮充轉(zhuǎn)換，因此如果要控制電池均浮充轉(zhuǎn)換，必須先將系統(tǒng)運(yùn)行方式轉(zhuǎn)換到手動運(yùn)行。在自動運(yùn)行方式下，如果下發(fā)電池狀態(tài)轉(zhuǎn)換命令，PSM-E10不響應(yīng)，無應(yīng)答。附錄E：CRC校驗(yàn)的計(jì)算方法CRC（Cyclical Redundancy Check)由兩字節(jié)組成，生成函數(shù)如下：1.CRC計(jì)算函數(shù)ChkSum(BYTE* pData,UINT nDataLen) BYTE uchCRCHi = 0xff; BYTE uchCRCLo = 0xff; UINT uIndex; while(nDataLen-) uIndex = uchCRCHi *pData+; uchCRC

10、Hi = uchCRCLo auchCRCHiuIndex;uchCRCLo = auchCRCLouIndex; return (uchCRCHi<<8|uchCRCLo);2。CRC表高字節(jié)：BYTE auchCRCHi =0x00,0xc1,0x81,0x40,0x01,0xc0,0x80,0x41,0x01,0xc0,0x80,0x41,0x00,0xc1,0x81,0x40,0x01,0xc0,0x80,0x41,0x00,0xc1,0x81,0x40,0x00,0xc1,0x81,0x40,0x01,0xc0,0x80,0x41,0x01,0xc0,0x80,0x41,

11、0x00,0xc1,0x81,0x40,0x00,0xc1,0x81,0x40,0x01,0xc0,0x80,0x41,0x00,0xc1,0x81,0x40,0x01,0xc0,0x80,0x41,0x01,0xc0,0x80,0x41,0x00,0xc1,0x81,0x40,0x01,0xc0,0x80,0x41,0x00,0xc1,0x81,0x40,0x00,0xc1,0x81,0x40,0x01,0xc0,0x80,0x41,0x00,0xc1,0x81,0x40,0x01,0xc0,0x80,0x41,0x01,0xc0,0x80,0x41,0x00,0xc1,0x81,0x40,

12、0x00,0xc1,0x81,0x40,0x01,0xc0,0x80,0x41,0x01,0xc0,0x80,0x41,0x00,0xc1,0x81,0x40,0x01,0xc0,0x80,0x41,0x00,0xc1,0x81,0x40,0x00,0xc1,0x81,0x40,0x01,0xc0,0x80,0x41,0x01,0xc0,0x80,0x41,0x00,0xc1,0x81,0x40,0x00,0xc1,0x81,0x40,0x01,0xc0,0x80,0x41,0x00,0xc1,0x81,0x40,0x01,0xc0,0x80,0x41,0x01,0xc0,0x80,0x41,

13、0x00,0xc1,0x81,0x40,0x00,0xc1,0x81,0x40,0x01,0xc0,0x80,0x41,0x01,0xc0,0x80,0x41,0x00,0xc1,0x81,0x40,0x01,0xc0,0x80,0x41,0x00,0xc1,0x81,0x40,0x00,0xc1,0x81,0x40,0x01,0xc0,0x80,0x41,0x00,0xc1,0x81,0x40,0x01,0xc0,0x80,0x41,0x01,0xc0,0x80,0x41,0x00,0xc1,0x81,0x40,0x01,0xc0,0x80,0x41,0x00,0xc1,0x81,0x40,

14、0x00,0xc1,0x81,0x40,0x01,0xc0,0x80,0x41,0x01,0xc0,0x80,0x41,0x00,0xc1,0x81,0x40,0x00,0xc1,0x81,0x40,0x01,0xc0,0x80,0x41,0x00,0xc1,0x81,0x40,0x01,0xc0,0x80,0x41,0x01,0xc0,0x80,0x41,0x00,0xc1,0x81,0x40;低字節(jié)：BYTE auchCRCLo = 0x00,0xc0,0xc1,0x01,0xc3,0x03,0x02,0xc2,0xc6,0x06,0x07,0xc7,0x05,0xc5,0xc4,0x04

15、,0xcc,0x0c,0x0d,0xcd,0x0f,0xcf,0xce,0x0e,0x0a,0xca,0xcb,0x0b,0xc9,0x09,0x08,0xc8,0xd8,0x18,0x19,0xd9,0x1b,0xdb,0xda,0x1a,0x1e,0xde,0xdf,0x1f,0xdd,0x1d,0x1c,0xdc,0x14,0xd4,0xd5,0x15,0xd7,0x17,0x16,0xd6,0xd2,0x12,0x13,0xd3,0x11,0xd1,0xd0,0x10,0xf0,0x30,0x31,0xf1,0x33,0xf3,0xf2,0x32,0x36,0xf6,0xf7,0x37

16、,0xf5,0x35,0x34,0xf4,0x3c,0xfc,0xfd,0x3d,0xff,0x3f,0x3e,0xfe,0xfa,0x3a,0x3b,0xfb,0x39,0xf9,0xf8,0x38,0x28,0xe8,0xe9,0x29,0xeb,0x2b,0x2a,0xea,0xee,0x2e,0x2f,0xef,0x2d,0xed,0xec,0x2c,0xe4,0x24,0x25,0xe5,0x27,0xe7,0xe6,0x26,0x22,0xe2,0xe3,0x23,0xe1,0x21,0x20,0xe0,0xa0,0x60,0x61,0xa1,0x63,0xa3,0xa2,0x62

17、,0x66,0xa6,0xa7,0x67,0xa5,0x65,0x64,0xa4,0x6c,0xac,0xad,0x6d,0xaf,0x6f,0x6e,0xae,0xaa,0x6a,0x6b,0xab,0x69,0xa9,0xa8,0x68,0x78,0xb8,0xb9,0x79,0xbb,0x7b,0x7a,0xba,0xbe,0x7e,0x7f,0xbf,0x7d,0xbd,0xbc,0x7c,0xb4,0x74,0x75,0xb5,0x77,0xb7,0xb6,0x76,0x72,0xb2,0xb3,0x73,0xb1,0x71,0x70,0xb0,0x50,0x90,0x91,0x51,0x93,0x53,0x52,0x92,0x96,0x56,0x57,