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QJ71C24 R2與E540變頻器進(jìn)行232通信，QJ發(fā)送后變頻器無反應(yīng)，在電腦上用串口調(diào)試工具發(fā)送同樣的數(shù)據(jù)，變頻器動(dòng)作正常。將QJ的端口連接至電腦端口后用串口調(diào)試工具對(duì)其發(fā)送內(nèi)容進(jìn)行檢測(cè)后發(fā)現(xiàn)并無錯(cuò)誤，只是獲得的數(shù)據(jù)并不是一起接收到得。先將串口調(diào)試工具獲得的內(nèi)容粘貼如下：
# Time Function Data ( Hex )
16 [00010541] IRP_MJ_READ Length: 0001, Data: 05
17 [00010541] IRP_MJ_READ Length: 0001, Data: 30
18 [00010541] IRP_MJ_READ Length: 0001, Data: 30
19 [00010541] IRP_MJ_READ Length: 0001, Data: 46
20 [00010541] IRP_MJ_READ Length: 0001, Data: 41
21 [00010541] IRP_MJ_READ Length: 0001, Data: 31
22 [00010541] IRP_MJ_READ Length: 0001, Data: 30
23 [00010541] IRP_MJ_READ Length: 0001, Data: 30
24 [00010541] IRP_MJ_READ Length: 0001, Data: 37
25 [00010541] IRP_MJ_READ Length: 0001, Data: 38
26 [00010542] IRP_MJ_READ Length: 0001, Data: 0D
27 [00010543] IRP_MJ_READ Length: 0001, Data: 0A
注：以上是串口調(diào)試工具獲得QJ發(fā)送的數(shù)據(jù)記錄，這個(gè)是變頻停止指令（用串口調(diào)試工具讓變頻器先運(yùn)轉(zhuǎn)起來后再用此指令），即使是變頻器運(yùn)行指令，變頻器也無反應(yīng)。為什么接收來的數(shù)據(jù)時(shí)這個(gè)樣子呢？？而不是一個(gè)長(zhǎng)度為12的數(shù)據(jù)呢？？
138 [00003133] IRP_MJ_WRITE Length: 0012, Data: 05 30 30 46 41 31 30 32 37 41 0D 0A
139 [00003136] IRP_MJ_READ Length: 0003, Data: 06 30 30
140 [00004015] IRP_MJ_WRITE Length: 0012, Data: 05 30 30 46 41 31 30 30 37 38 0D 0A
141 [00004018] IRP_MJ_READ Length: 0003, Data: 06 30 30
142 [00007181] IRP_MJ_WRITE Length: 0012, Data: 05 30 30 46 41 31 30 32 37 41 0D 0A
143 [00007184] IRP_MJ_READ Length: 0003, Data: 06 30 30
注：以上是有串口調(diào)試工具向E540發(fā)送同樣的數(shù)據(jù) E540動(dòng)作正常
通信設(shè)置 9600、8、 Even 、2。 QJ（SW3:05DE SW4:0006）、 E540(0號(hào)站 9600、8、even、2、CRLF結(jié)束符、通信次數(shù)為9999 )、串口調(diào)試工具均設(shè)置無誤

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