三菱變頻器 E540
現在通訊設置沒有問題（9600 E 2） 但是問題是 傳送的數據不連續（有時候會連續） 造成變頻器沒有響應
用串口捕捉工具看了下模塊所發送的數據 如下 ：
#       Time        Function                        Data ( Hex )    

1       [00000000]  IRP_MJ_CREATE                   Port Opened - AccessPort.exe
2       [00000000]  IOCTL_SERIAL_SET_BAUD_RATE      Baud Rate: 9600

8       [00002544]  IRP_MJ_READ                     Length: 0010, Data: 05 30 31 46 41 31 30 32 37 42
9       [00002694]  IRP_MJ_READ                     Length: 0010, Data: 05 30 31 46 41 31 30 32 37 42
10      [00002784]  IRP_MJ_READ                     Length: 0010, Data: 05 30 31 46 41 31 30 32 37 42
11      [00002841]  IRP_MJ_READ                     Length: 0006, Data: 05 30 31 46 41 31
12      [00002842]  IRP_MJ_READ                     Length: 0004, Data: 30 32 37 42
13      [00002901]  IRP_MJ_READ                     Length: 0004, Data: 05 30 31 46
14      [00002902]  IRP_MJ_READ                     Length: 0006, Data: 41 31 30 32 37 42
15      [00002949]  IRP_MJ_READ                     Length: 0005, Data: 05 30 31 46 41
16      [00002950]  IRP_MJ_READ                     Length: 0005, Data: 31 30 32 37 42
17      [00003001]  IRP_MJ_READ                     Length: 0008, Data: 05 30 31 46 41 31 30 32
18      [00003002]  IRP_MJ_READ                     Length: 0002, Data: 37 42
19      [00003047]  IRP_MJ_READ                     Length: 0010, Data: 05 30 31 46 41 31 30 32 37 42
20      [00003094]  IRP_MJ_READ                     Length: 0001, Data: 05
21      [00003095]  IRP_MJ_READ                     Length: 0009, Data: 30 31 46 41 31 30 32 37 42

Length: 0010, Data: 05 30 31 46 41 31 30 32 37 42  這樣的數據時正確的 變頻器能有響應 也就是10位的數據要一起發送才可以的

現在的問題就是有時候是連續的 有時候不是 不知問題所在
PLC程序只有兩段 一段是數據傳送到數據區 第二段入附圖所示
不知是不是每一次通訊完成后都要清空一下SCU呢？？？（注 對協議宏和該模塊還不是很了解 所以有此想法 ）
附圖 PLC程序 和 協議宏

期待高人出現

給技術支持打電話 用了下他們推薦的串口調試工具 結果發現是這樣的
\ENQ01FA1027B\ENQ01FA1027B\ENQ01FA1027B\ENQ01FA1027B\ENQ01FA1027B\ENQ01FA1027B\ENQ01FA1027B\ENQ01FA1027B\ENQ01FA1027B\ENQ01FA1027B\ENQ01FA1027B\ENQ01FA1027B\ENQ01FA1027B\ENQ01FA1027B\ENQ01FA1027B\ENQ01FA1027B\ENQ01FA1027B05 30 31 46 41 31 30 32 37 42 05 30 31 46 41 31 30 32 37 42 05 30 31 46 41 31 30 32 37 42 05 30 31 46 41 31 30 32 37 42 05 30 31 46 41 31 30 32 37 42 05 30 31 46 41 31 30 32 37 42 05 30 31 46 41 31 30 32 37 42 05 30 31 46 41 31 30 32 37 42 05 30 31 46 41 31 30 32 37 42 05 30 31 46 41 31 30 32 37 42 05 30 31 46 41 31 30 32 37 42  
沒有時間 和每一次的數據長度

8       [00002544]  IRP_MJ_READ                     Length: 0010, Data: 05 30 31 46 41 31 30 32 37 42
9       [00002694]  IRP_MJ_READ                     Length: 0010, Data: 05 30 31 46 41 31 30 32 37 42
10      [00002784]  IRP_MJ_READ                     Length: 0010, Data: 05 30 31 46 41 31 30 32 37 42
11      [00002841]  IRP_MJ_READ                     Length: 0006, Data: 05 30 31 46 41 31
12      [00002842]  IRP_MJ_READ                     Length: 0004, Data: 30 32 37 42
13      [00002901]  IRP_MJ_READ                     Length: 0004, Data: 05 30 31 46
14      [00002902]  IRP_MJ_READ                     Length: 0006, Data: 41 31 30 32 37 42
15      [00002949]  IRP_MJ_READ                     Length: 0005, Data: 05 30 31 46 41
16      [00002950]  IRP_MJ_READ                     Length: 0005, Data: 31 30 32 37 42
17      [00003001]  IRP_MJ_READ                     Length: 0008, Data: 05 30 31 46 41 31 30 32
18      [00003002]  IRP_MJ_READ                     Length: 0002, Data: 37 42
19      [00003047]  IRP_MJ_READ                     Length: 0010, Data: 05 30 31 46 41 31 30 32 37 42
20      [00003094]  IRP_MJ_READ                     Length: 0001, Data: 05
21      [00003095]  IRP_MJ_READ                     Length: 0009, Data: 30 31 46 41 31 30 32 37 42
22      [00003139]  IRP_MJ_READ                     Length: 0009, Data: 05 30 31 46 41 31 30 32 37
23      [00003140]  IRP_MJ_READ                     Length: 0001, Data: 42
24      [00003183]  IRP_MJ_READ                     Length: 0009, Data: 05 30 31 46 41 31 30 32 37
25      [00003184]  IRP_MJ_READ                     Length: 0001, Data: 42
26      [00003225]  IRP_MJ_READ                     Length: 0006, Data: 05 30 31 46 41 31
27      [00003226]  IRP_MJ_READ                     Length: 0004, Data: 30 32 37 42
28      [00003265]  IRP_MJ_READ                     Length: 0002, Data: 05 30
29      [00003266]  IRP_MJ_READ                     Length: 0008, Data: 31 46 41 31 30 32 37 42
30      [00003306]  IRP_MJ_READ                     Length: 0009, Data: 05 30 31 46 41 31 30 32 37
31      [00003307]  IRP_MJ_READ                     Length: 0001, Data: 42
32      [00003344]  IRP_MJ_READ                     Length: 0004, Data: 05 30 31 46
33      [00003345]  IRP_MJ_READ                     Length: 0006, Data: 41 31 30 32 37 42
34      [00003385]  IRP_MJ_READ                     Length: 0010, Data: 05 30 31 46 41 31 30 32 37 42
35      [00003454]  IRP_MJ_READ                     Length: 0005, Data: 05 30 31 46 41
36      [00003455]  IRP_MJ_READ                     Length: 0005, Data: 31 30 32 37 42
37      [00003805]  IRP_MJ_READ                     Length: 0003, Data: 05 30 31
38      [00003806]  IRP_MJ_READ                     Length: 0007, Data: 46 41 31 30 32 37 42
39      [00003886]  IRP_MJ_READ                     Length: 0005, Data: 05 30 31 46 41
40      [00003887]  IRP_MJ_READ                     Length: 0005, Data: 31 30 32 37 42
41      [00003936]  IRP_MJ_READ                     Length: 0008, Data: 05 30 31 46 41 31 30 32
42      [00003937]  IRP_MJ_READ                     Length: 0002, Data: 37 42
43      [00003984]  IRP_MJ_READ                     Length: 0010, Data: 05 30 31 46 41 31 30 32 37 42
44      [00004032]  IRP_MJ_READ                     Length: 0010, Data: 05 30 31 46 41 31 30 32 37 42
45      [00004076]  IRP_MJ_READ                     Length: 0009, Data: 05 30 31 46 41 31 30 32 37
46      [00004077]  IRP_MJ_READ                     Length: 0001, Data: 42
47      [00004379]  IRP_MJ_READ                     Length: 0008, Data: 05 30 31 46 41 31 30 32
48      [00004380]  IRP_MJ_READ                     Length: 0002, Data: 37 42
49      [00005067]  IRP_MJ_READ                     Length: 0010, Data: 05 30 31 46 41 31 30 32 37 42
50      [00005744]  IRP_MJ_READ                     Length: 0005, Data: 05 30 31 46 41
51      [00005745]  IRP_MJ_READ                     Length: 0005, Data: 31 30 32 37 42
52      [00006516]  IRP_MJ_READ                     Length: 0008, Data: 05 30 31 46 41 31 30 32
53      [00006518]  IRP_MJ_READ                     Length: 0002, Data: 37 42
54      [00006595]  IRP_MJ_READ                     Length: 0010, Data: 05 30 31 46 41 31 30 32 37 42

多次試驗后的數據
還是有時連續有時不連續

用串口調試工具發送同樣的數據 只要是連續的10位 都好使 即使在變頻器運行的時候
PR77=2的時候 變頻器就可以接受不連續的數據 是這樣的么 ？？？

現在的問題是 怎樣能讓SCU發送的數據連續 也就是每次的數據長度變成10

引用

引用第7樓hlq_0815于2011-07-14 09:31發表的 SCU21 232串口和變頻器通訊 :
按你貼出的數據分析：發送是連續的，至少變頻器認為是連續的。只是你的協議還有點問題：通信等待時間的數據沒有

你錯了  我的發送的10個數據要連續發送的  現在并沒有實現(變頻器要是認為是連續的話估計就有反應了） 數據長度有的還不是10  正因為每一次發送的數據長度不是10 所以變頻器沒有反應 用串口調試工具發送連續的同樣的10個數據 變頻器就有反應 還有 關于沒有CR/LF 在參數里面是可以設置的  關于通訊時間 通訊數據是可以不要求設置的 變頻器里面設置的是9999