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<title>请问如何利用RS-232控制仪器</title>
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<h1>请问如何利用RS-232控制仪器</h1>
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Posted by <a href="mailto:al1635an@ms16.hinet.net">郑秋男</a> on January 21, 1998 at 23:10:57:<p>
请问我有一台检测仪器，想利用RS-232控制，不知如何利用vb6撰写程式。<br>可否教一下小弟，感激不尽。<p>下列为通信设定片段。<p>STX:start of text(02h)<br>cr :carriage return (0dh)<br>ch1,ch2:not used and urex side to be ignored<br>sp :space code (20h)<br>etx:end of text(03h)<br>, :character between two [,] to be ascii code<br>* :asterisk * show ank code and negative sign'-'code<br>nak:negative acknowledge<p>baud rate 9600bps<br>data length 8bit<br>parity non<br>stop bit 1<br>flow control used<p>requesting measuring gas concentration<br>requesst (cpu)<br> stx,ch1,ch2'RG',cr,etx<br> stx,sp,sp'AGC**.**h*****d***.*o***.*',cr,etx<br> nak<br>setting "meas" mode<br>request (cpu)<br> stx,ch1,ch2,'CMM',cr,etx<br>answer (urex)<br> stx,sp,sp,'AMM',cr,etx<br> nak <p>
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