LVRT PXI Target ethernet stops for several seconds

Question

Hello,
I am experiencing a problem described in this thread:
http://forums.ni.com/ni/board/message?board.id=170&message.id=101488&requireLogin=False
A brief explanation is: during TCP transfers, the data transmission will pause periodically, for several seconds.  In that case, LV version is 7.1, and the solution was a maintenance upgrade to 7.1.1.  In my case, the LV version is 7.0 (I am supporting a customer application), and because LV 7.1 was not purchased, the upgrade is not available to me.
Is there a similar fix available for LV RT 7.0?  OS is Windows 2000.
Thank you,
RonC

Answer 1

Hello RonC,
From what I understand, you are asking for a maintance release to improve the TCP communication.  Unfortunately, that does require the upgrade to at least 7.1.1.  One other option that might help improve performance is to set your system to half-duplex.  I have included the instructions below:
When using a crossover cable to communicate between an RT controller and a windows host, it is important to ensure that the systems correctly negotiate signals. By manually setting these connections, you ensure correct communication with the RT system and host.
Configure the settings in Windows 2000 or Windows XP
Right-click on My Computer on the Desktop and choose Properties.
Select the Hardware tab and click Device Manager.
Expand Network Adapters.
Right-click on the ethernet communication device (i.e. Intel(R) PRO/100VE Desktop Adapter) and choose Properties.
Select the Advanced tab and browse the list on the right hand side. One of the items will allow you to configure the communication settings by selecting an item from the Value drop down menu. In the Value drop-down box, you will see the following options:
100Mbps/Full Duplex
100Mbps/Half Duplex
10Mbps/Full Duplex
10Mbps/Half Duplex
Auto Detect
Select one of the Half Duplex modes and select OK
The host system is now set up for half-duplex communication
Configure the settings on the RT Controller
Open Measurement and Automation Explorer (MAX)
Expand Remote Systems and select your Real-Time target
Select the Advanced Ethernet Settings Button to bring up the property page
In the property page select half duplex and select OK
The Real-Time controller is now setup to use half-duplex communication.
I hope this helps!
Janell R | Applications Engineer