GPIB/LAN网关和放大器之间的GPIB命令错误该怎么办？

嗨，我正在使用“E5810A GPIB / LAN网关来控制HF放大器。为了与VEE中的放大器通信，我正在使用直接I / O对象。我的问题：有时放大器在发送正确后没有开启
GPIB命令是“HF_ON”，奇怪的是VEE没有显示811错误消息告诉我没有找到设备或者有超时错误。这意味着找到了所需的放大器，但为什么没有
放大器对我的命令做出反应??为什么VEE无法通知我 - 通过显示错误信息 - 放大器没有对我的命令作出反应。这种奇怪的行为不会一直发生在我身上
我不知道如何解决这个烦人的问题，我在放大器的直接i / o对象中设置的超时是：5。如果有人能帮助我理解并解决问题，我会很高兴。谢谢你提前
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     以下为原文

  Hi,

I am using  the "E5810A GPIB/LAN Gateway to control a HF Amplifier.
To communicate with the amplifier in VEE  I am using the direct I/O objects.

My Problem:
Sometimes the amplifier doesn't  turn on after sending the correct GPIB command which is "HF_ON" and the strange thing is that VEE does't display the 811 error message to tell me that no device was found or that there is a timeout error. which means that the desired amplifier was found , but why doesn't the amplifier react to my command ?? and why VEE is not able to inform me --by displaying an error message-- that the amplifier did not react to my command.

This strange behavior doesn't happen all the time and i have no idea what to do to fix this annoying problem, the timeout that i set in the direct i/o  object of the amplifier is: 5s.


I will be happy if somebody could help me to understand and fix the problem.

Thanks in advance.