RE: Re:RE: "Connection refused" when running Ethernet/RS232 application

[Mark Rivers <rivers@cars.uchicago.edu>]

If telnet to that TCP port does not work then EPICS won’t work.  The fact that you can ping just means that the device exists.

 

Are you sure that port 1 is correct?  On the devices I have used the first serial port is typically TCP port 2001 or 4001.

 

Mark

 

 

From: 张德敏 [mailto:zhangdemin99@163.com]
Sent: Thursday, December 13, 2012 7:49 AM
To: Mark Rivers
Cc: 'Nicholas P. DiMonte'; tech-talk
Subject: Re:RE: "Connection refused" when running Ethernet/RS232 application

 

 

Hi,

 

When I use “telnet” from my Linux machine:

  telnet 192.168.0.21 1

I also get connection refused. But “ping 192.168.0.21”, it works well.

 

I can’t find the “TCP Server Mode” attribute of the port of the NI Ethernet/RS232 convertor(4 ports) , and the port likely needn’t to be configured.

 

Then, Is the port number the convertor’s port num or the device port in the machine? how should I set the port number in drvAsynIPPortConfigure?