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1、101規(guī)約報(bào)文分析?①主站鏈路請(qǐng)求報(bào)文:1049014A16啟動(dòng)字符:10H控制域:?49H?-->?01001001????????????????????DIR(傳輸方向位)=0?PRM(啟動(dòng)報(bào)文位)=1????主站-->從站???????????????????FCB(幀計(jì)數(shù)位)=0?FCV(幀計(jì)數(shù)有效位)=0(無效)???????????????????功能碼=9?召喚鏈路狀態(tài)地址域鏈路:01H幀校驗(yàn)和?:4AH(前面除啟動(dòng)字符外的所有字節(jié)的累加)結(jié)束字符?:16H?②從站鏈路請(qǐng)求響應(yīng)報(bào)文:108B018C16啟動(dòng)字符:10H控制域:?8BH?-->?10001011
2、????????????????????DIR(傳輸方向位)=1?PRM(啟動(dòng)報(bào)文位)=0????從站-->主站???????????????????ACD(要求訪問位)=0(無一級(jí)數(shù)據(jù))?DFC(數(shù)據(jù)位)=0(表示子站可以繼續(xù)接收數(shù)據(jù))???????????????????功能碼=11?以鏈路狀態(tài)或訪問請(qǐng)求回答請(qǐng)求幀鏈路地址域:01H幀校驗(yàn)和?:8CH(前面除啟動(dòng)字符外的所有字節(jié)的累加)結(jié)束字符?:16H?③主站鏈路復(fù)位請(qǐng)求報(bào)文:1040014116啟動(dòng)字符:10H控制域:?40H?-->?01000000????????????????????DIR(傳輸方向位)=0?P
3、RM(啟動(dòng)報(bào)文位)=1????主站-->從站???????????????????FCB(幀計(jì)數(shù)位)=0?FCV(幀計(jì)數(shù)有效位)=0(無效)???????????????????功能碼=0?復(fù)位遠(yuǎn)方鏈路鏈路地址域:01H幀校驗(yàn)和?:41H(前面除啟動(dòng)字符外的所有字節(jié)的累加)結(jié)束字符?:16H?④從站鏈路復(fù)位響應(yīng)報(bào)文:1080018116啟動(dòng)字符:10H控制域:?80H?-->?10000000????????????????????DIR(傳輸方向位)=1?PRM(啟動(dòng)報(bào)文位)=0????從站-->主站???????????????????ACD(要求訪問位)=0(無一級(jí)數(shù)據(jù)
4、)?DFC(數(shù)據(jù)位)=0(表示子站可以繼續(xù)接收數(shù)據(jù))???????????????????功能碼=0?確認(rèn)?鏈路地址域:01H幀校驗(yàn)和?:81H(前面除啟動(dòng)字符外的所有字節(jié)的累加)結(jié)束字符?:16H?⑤主站召喚2級(jí)數(shù)據(jù)報(bào)文:107B017C16啟動(dòng)字符:10H控制域:?7BH?-->?01111011????????????????????DIR(傳輸方向位)=0?PRM(啟動(dòng)報(bào)文位)=1????主站-->從站???????????????????FCB(幀計(jì)數(shù)位)=1?FCV(幀計(jì)數(shù)有效位)=1(有效)???????????????????功能碼=11?召喚用戶2級(jí)數(shù)據(jù)鏈路
5、地址域:01H幀校驗(yàn)和?:7CH結(jié)束字符?:16H?⑥從站無所召喚數(shù)據(jù)響應(yīng)報(bào)文:1089018A16啟動(dòng)字符:10H控制域:?89H?-->?10001001????????????????????DIR(傳輸方向位)=1?PRM(啟動(dòng)報(bào)文位)=0????從站-->主站???????????????????ACD(要求訪問位)=0(無一級(jí)數(shù)據(jù))?DFC(數(shù)據(jù)位)=0(表示子站可以繼續(xù)接收數(shù)據(jù))???????????????????功能碼=9?無所召喚的數(shù)據(jù)?鏈路地址域:01H幀校驗(yàn)和?:8AH結(jié)束字符?:16H??⑦主站總召報(bào)文:68090968730164010601?00
6、0014F416啟動(dòng)字符:68HASDU長度:09H(9個(gè)字節(jié),即730164010601?000014)重復(fù)長度:09H啟動(dòng)字符:68H控制域:?73H?-->?01110011????????????????????DIR(傳輸方向位)=0?PRM(啟動(dòng)報(bào)文位)=1????主站-->從站???????????????????FCB(幀計(jì)數(shù)位)=1?FCV(幀計(jì)數(shù)有效位)=1(有效)???????????????????功能碼=3?傳送數(shù)據(jù)鏈路地址域:???01H數(shù)據(jù)類型標(biāo)識(shí):?64H(CON<100>:=總召喚命令)可變結(jié)構(gòu)限定詞:01H(SQ=0,number=1)傳送
7、原因:?????06H(Cause=6,激活)應(yīng)用服務(wù)數(shù)據(jù)單元地址:01H信息體地址:00H00H信息體數(shù)據(jù)(元素):14H(召喚限定詞QOI=20,站召喚全局)幀校驗(yàn)和?:F4H結(jié)束字符?:16H?⑧從站總召響應(yīng)報(bào)文:68090968A801640107010000142A16啟動(dòng)字符:68H(可變幀)ASDU長度:09H(9個(gè)字節(jié),即A80164010701000014)重復(fù)長度:09H啟動(dòng)字符:68H控制域:?A8H?-->?10101000????????????????????DIR(傳輸方向