求助VB通讯数据识别
VB学的用的都不精，编个程序用了很长时间了，现在这个通讯部分还没做好，求助大家一下：
ctrMSComm.Output = "@01R" '读命令
instar = ctrMSComm.Input '读通讯
wy_I = val(HEX_to_DEC(Mid(instar, 29, 4))) * (20 / 4095#)
wy = Format(5 * wy_I - 15, "0.000")
请教一下 (20 / 4095#) 什么意思呢？
"@01R" 用这个 读命令 读进来的数据不会识别，请教下有人知道怎么处理吗？
谢谢大家
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