<p>点的定义出错,参照:</p><p><table class="standard"><tbody><tr class="shaded"><td><p id="25716"><var>OPCItemName</var>
</p></td><td><p id="25718">The location in the controller where the value is recorded. You need to see the vendor's documentation for the syntax. </p><p id="25719">For example, if you are using the system OPC Server to access the PV of a point named <em>sinewave</em> the location would be <code>sinewave.PV</code>. </p><p id="27269">Any printable ASCII character that you can type, including the space character, is supported</p></td></tr></tbody></table></p> |