Connection problem FX3u

[RheinhardtP27]

Hi Gents, I am having the following problem. I hvae a FX3u-Enet module that communicates to a 3rd part pc. Underneath is my config. Initially after power up when i connect to my communication pair both connections are opened(Connection 2 & 3). The problem comes when this connection falls away and then tries to reopen these connection. At first it would only connect to the send connection when i disconnect and reconnect it only connects to the receive connection. I have attached Ethernet diagnostics. The screens are under following conditions. NXAutoConfigure.jpg -- Configuration settings NXAutoConnect.jpg -- Initial connection. Works 100%. Send and Receive NXAutoDisConnect.jpg -- Initial Disconnect from 3 rd party NXAutoConnect2.jpg -- When connecting a second time. Only Receive works. NXAutoConnect3.jpg -- When connecting a 3rd time. Only Send works. Afterwards it toggls between the two and i cannot get both open. I have tried to re-initialize using code but it does not make a difference. Any idea what could be causing this? Edited April 21, 2011 by RheinhardtP27

[Gambit]

The ports are probably still open. You should turn on "existence confirmation" so the Enet module will close his ports when he cannot reach PC for a while. Edited April 22, 2011 by Gambit

[RheinhardtP27]

Hi Gambit, I have done this setting but it makes no difference the only time i am able to connect properly is after a power down and up. Any other possible ideas /routes. It even happens when i re-initialize the the Ethernet card. Rheinhardt Edited April 29, 2011 by RheinhardtP27

[Gambit]

When I look at your screencaptures when everything is working ok. It only shows port2. When your trying to connect again after a disconnection. You see port 2 and 3. It lookes like your paring is not working anymore. I think there might be something wrong in your reinitiallisation code.

[RheinhardtP27]

Hi Gambit , i use the standard initialization block as supplied by Mitsubishi. See attached Edited April 29, 2011 by RheinhardtP27

[Gambit]

Ok but I was looking for the port initialisation. Which FB are you using Edited April 29, 2011 by Gambit

[Gambit]

Besides you should delete this FB because you are already using the FX configurator EN. Using this FB is redundant and might change some setting which are set correctly

[RheinhardtP27]

Hi Thank you for the advice. I dont initialize the port communication the 3rd party software initiates this. Do i not have to close this port using programming? Rheinhardt Edited May 2, 2011 by RheinhardtP27

[RheinhardtP27]

Hi Gents, What are my other options to communicate TCP to this computer. can i initialize a send receive ports through code on my side? Rheinhardt

[RheinhardtP27]

OK i found something very strange. When i download my settings and do a verify it seems not all parameters are being changed. How can i clear this data to ensure there are no mismatches. I think this might be part of my problem. Unless i completely leave out FX configurtor and do all this setup within the code.?? Attached is my verify screen

[RheinhardtP27]

FYI, I found the problem is using a seperate send and receive block.After using theFX3FixedBufferPairingUNpassive block all issues were resolved. i misunderstood gambit when he said port initialization as this still gets done by the 3rd part pc. Rheinhardt