条码code128编码规则

1、- -条码CODE128编码规则CODE128简介CODE128码于1981年推出，是一种长度可变、连续性的字母数字条码。与其他一维条码比较起来，相对较为复杂，支持的宇元也相对较多，又有不同的编码为式可供交互运用，因此其应用弹性也较大。CODE128特性1、具有A、B、C三种不同的编码类型，可提供标准ASCII中128个宇元的编码使用；2、允许双向扫描；3、可自行决定是否加上校验位；4、条码长度可调，但包括开始位和结束位在内，不可超过232个字元；5、同一个CODE128码可以由A、B、C三种不同编码规则互换，既可扩大字元选择的范围，也可缩短编码的长度。CODE128编码方式的编码范围1、CO

2、DE128A：标准数字、大写字母、控制符及特殊宇符；2、CODE128B：标准数字、大写宇母、小写字母及特殊字符；3、CODE128C/EAN128:0099的数字对集合，共100个，既只能表示偶数位长度的数字。CODE128编码规则开始位+FNC1（为EAN128码时附加）+数据位+校验位+结束位CODE128校验位计算（开始位对应ID+每位数据在整个数据中的位置X每位数据对应的ID值）%103CODE128编码表IDASCIICade128ACade128BCade128CBandCode编码值032SPSP0021222211011001100133!012221221100110110

3、02344G4G0222222111001100110335#0312122310010011000436$04121322100h0001100IDASCIICade128ACade128BCade128CBandCode编码值537%0513122210001001100638&0612221310011001000739GG0712231210011000100840(0813221210001100100941)092212131100h00h0001042*10221312110010001001143+1123121211000100100124412112232101100111

4、001345-1312213210011011100144614122231100110011101547/151132221011100110016480016123122100111011001749111712322110011100110185022182232111100111001019513319221132110010111002052442022123111001001110215355212132121101110010022546622223112110011101002355772331213111101101110245688243112221110100110025

5、579925321122111001011002658:263212211110010011027592731221211101100100286030212123110110110003163?3121232111011000110326432232121110001101103365AA33111323101000110003466BB34131123100010110003567CC35131321100010001103668DD36112313101100010003769EE37132113100011010003870FF38132311100011000103971GG3921

6、1313110100010004072HH40231113110001010004173II41231311110001000104274JJ42112133101101110004375KK4311233110110001110IDASCIICade128ACade128BCade128CBandCode编码值4476LL44132131100011011104577MM45113123101110110004678NN46113321101110001104779OO47133121100011101104880PP48313121111011101104981QQ492113311101

7、00011105082RR50231131110001011105183SS51213113110111010005284TT52213311110111000105385UU53213131110111011105486VV54311123111010110005587WW55311321111010001105688XX56331121111000101105789YY57312113111011010005890ZZ583123111110110001059915933211111100011010609260314111111011110106193612214111100100001

8、06294AA6243111111110001010639563111224101001100006496NUL、64111422101000011006597SOHa65121124100101100006698STXb66121421100100001106799ETXc671411221000010110068100EOTd681412211000010011069101ENQe691122141011001000070102ACKf701124121011000010071103BELg711221141001101000072104BSh72122411100110000107310

9、5HTi731421121000011010074106LFj741422111000011001075107VTk752412111100001001076108FFl762211141100101000077109CRm774131111111011101078110SOn782411121100001010079111SIo791341111000111101080112DLEp801112421010011110081113DC1q811211421001011110082114DC2r8212124110010011110IDASCIICade128ACade128BCade128C

10、BandCode编码值83115DC3s831142121011110010084116DC4t841241121001111010085117NAKu851242111001111001086118SYNv864112121111010010087119ETBw874211121111001010088120CANx884212111111001001089121EMy892121411101101111090122SUBz902141211101111011091123ESC914121211111011011092124FS|921111431010111100093125GS93111

11、3411010001111094126RS941311411000101111095200USDEL951141131011110100096201FNC3FNC3961143111011110001097202FNC2FNC2974111131111010100098203SHIFTSHIFT984113111111010001099204CODECCODEC9911314110111011110100205CODEBFNC4CODEB11413110111101110101206FNC4CODEACODEA31114111101011110102207FNClFNClFNCl4111311

12、1110101110103208StartAStartAStartA21141211010000100104209StartBStartBStartB21121411010010000105210StartCStartCStartC2112321101011100106211StopStopStop23311121100011101011CODE128编码示例以95270078为例：CODE128A,开始位对应的ID为103,第1位数据9对应的ID为25,第2位数据5对应的ID为21,依此类推，可以计算校验位为：(103+1X25+2X21+3X18+4X23+5X16+6X16+7X23+8

13、X24)%103=21。即校验位的ID为21。对照编码表95270078编码表示为:开始位StartA(11010000100)+11100101100)11011100100)1100111001011100101100)11011100100)11001110010)11101101110)50(10011101100)+0(10011101100)+7(11101101110)+8(11101001100)+检验位21(11011100100)+结束位Stop(1100011101011)即：110100001001110010110011011100100110011100101110

14、110111010011101100100111011001110110111011101001100110111001001100011101011若要打印，只需将1用黑色线标出0用白色线标出，一个简单的条形码就生成了。CODE128B与CODE128A类似。而CODE128C只能对长度为偶数的数字串编码，每两个数字和为一位编码，所以输出的信息压缩了一半，打印的条形码因此也就较短。接上例，第1位数据95对应ID为95,第2位数据27对应ID为27,第3位数据00对应ID为0,第4位数据78对应ID为78,所以检验位为：(105+1X95+2X27+3X0+4X78)%103=51EAN128与CODE128C相同，只是在开始位后多加一个控制位FNC1(ID为102),同时将FNC1做为第1位数据加入到校验位