VB and PLC communications through a simple operation can be connected directly with the PLC

新建文件夹
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..........\.....................\ApiLog
..........\.....................\......\lock
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..........\.....................\......\Step7Bas.ver
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..........\.....................\....\LINKVL.dbf
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..........\.....................\....\VERBLIST.PRO
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..........\.....................\Global
..........\.....................\......\colorder.dat
..........\.....................\......\colwidth.dat
..........\.....................\......\S7hCompressedMetadata.cmf
..........\.....................\......\s7netpro.npa
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..........\.....................\........\........\HATTRME1.DBF
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..........\.....................\........\........\HLASTID2.DBF
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..........\.....................\........\........\HATTARY1.DBF
..........\.....................\........\........\HATTARY1.DBT
..........\.....................\........\........\HATTARY1.MDX
..........\.....................\........\........\HATTRIB1.DBF
..........\.....................\........\........\HATTRIB1.MDX
..........\.....................\........\........\HATTRME1.DBF
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..........\.....................\........\........\HATTRME1.MDX
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..........\.....................\........\S7HDPSSX
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..........\.....................\........\........\HATTRIB1.MDX
..........\.....................\........\........\HATTRME1.DBF
..........\.....................\........\........\HATTRME1.DBT
..........\.....................\........\........\HATTRME1.MDX
..........\.....................\........\........\HLASTID2.DBF
..........\.....................\........\........\hLockID1
..........\.....................\........\........\HOBJECT1.DBF
..........\.....................\........\........\HOBJECT1.MDX
..........\.....................\........\........\HRELATI1.DBF
..........\.....................\........\........\HRELATI1.MDX
..........\.....................\........\S7HK30AX
..........\.....................\........\........\HATTARY1.DBF
..........\.....................\........\........\HATTARY1.DBT
..........\.....................\........\........\HATTARY1.MDX
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