Eurotherm RS232 El-Bisynch怎么通讯

你好，我发现自己现在有点迷失了。
我正试图用我的Vee应用程序与Eurotherm温度控制器进行通信。
作为协议，我打算通过RS232端口而不是Modbus使用专有的Bisynch以便于使用（至少我希望如此）。
我的Vee版本是9.22。
Agilent Connection Expert为16.1。
我尝试通过直接I / O ASRL设备访问仪器.Bisynch RS232通信要求RS232在这种情况下设置为19.2k波特，7Bit，LSB，奇偶校验=偶数，停止位= 1。
我已经通过Connection专家和LSB在Vee下的高级设备选项中配置了速度，数据宽度等。示例数据请求看起来像（Hex）：04 30 30 31 31 50 56 05预期响应看起来像（Hex）
）：02 50 56 56 ??
??
??
03 ??如果我通过终端应用程序将请求直接发送到串口，我会收到预期的响应。
响应时间最长为10ms。当我通过直接I / O对象（如文本或二进制）发送请求时，我可以看到通过I / O监视器发送正确的十六进制值。
但无论我尝试什么，我都无法从串口发出任何响应。
我总是超时。
不知怎的，我必须在这里错过一些关键部分。最诚挚的问候，LarsSölter



     以下为原文

  Hello,

I find my self a bit lost at the moment. I'm trying to communicate from my Vee application with an Eurotherm temperature controller. As protocol I intent to use the propriatary Bisynch via an RS232 port instead of Modbus for the ease of use (at least I hoped so). My Vee Version is 9.22. The Agilent Connection Expert is 16.1. I try to access the Instrument via a Direct I/O ASRL device.

The Bisynch RS232 communication requires RS232 to be set in this case to 19.2k Baud, 7Bit, LSB, Parity=Even, Stop Bit=1. I have configured speed, data width and so on via the Connection Expert and LSB in the advanced device options under Vee.

An example data request would look like (Hex): 04 30 30 31 31 50 56 05
The expected response would look like (Hex): 02 50 56 56 ?? ?? ?? 03 ??

If I send the request directly to the serial port via a terminal application I receive the expected response. Response time is max 10ms.

When I send the request via a Direct I/O Object (as Text or Binary) I can see the correct Hex values being send via the I/O Monitor. But I can catch no response from the serial port regardless of what I try. I always get a timeout. Somehow I must be missing some crucial part here.

With best regards, Lars Sölter