pascal Posted October 14, 2011 Report Share Posted October 14, 2011 hi, I'm using the enhanced web server with a V570 for controlling lights and shutters. but sometimes I can not acces the webpages. Then I have to switch of the PLC and switch it on to have acces on the web pages. When I look to the state of ethernet socket 1 (configured TCP_RAW/ port 80 / Slave) the state is 2 (listen) and everytime I want to acces the webpages, the counter SDW 19 ( socket 1 RXD total sessions) is incrementing. What could be the problem ? Quote Link to comment Share on other sites More sharing options...
Hladil L. Posted October 20, 2011 Report Share Posted October 20, 2011 hi, I'm using the enhanced web server with a V570 for controlling lights and shutters. but sometimes I can not acces the webpages. Then I have to switch of the PLC and switch it on to have acces on the web pages. When I look to the state of ethernet socket 1 (configured TCP_RAW/ port 80 / Slave) the state is 2 (listen) and everytime I want to acces the webpages, the counter SDW 19 ( socket 1 RXD total sessions) is incrementing. What could be the problem ? Well I noticed the same thing. I believe it can happen if you click in browser on link to another page during web page update from PLC. I didtn't found workaround for this either. However I found some other bugs in enhanced webserver sometimes happens that served string overflows and gets written to variable XL128, resulting in disrupting all web pages with this string. I suggest to add reset XL128 before each TCP RAW SEND I wrote some Javascript AJAX code to dynamically change web page variables instead of whole page refresh tag. When I used embedded java code, web server disrupted javascript code containing [ and ] characters (array indexes) even if they did'nt have MI or other strings recognized by web server replacing functions. Workaround - moved javascript code to external file with .js extension this is not a bug but it well be very usefull to extend HTM replacing functions of web server to .XML files too. It would be very useful for creating AJAX pages. I would debug these problems, but I can't because web server routines are password protected. I hope the original author reads this and does something about it. Well even in this stage, it must have been a huge piece of work to program entire HTTP server and I would like to say thanks to web server author. Quote Link to comment Share on other sites More sharing options...
pascal Posted October 24, 2011 Author Report Share Posted October 24, 2011 I don't think it has something to do with clicking on the wrong moment : I installed the enhanced webbrowser of my client on a V350 on my desk and this morning I had the problem again : without clicking to fast on some links : I tried everything to solve the problem without resetting it : closing port, then reopen port : not fixed then I searched for SB2 ( power up bit) and they are using this bit on the subroutine webgateway. I made some instructions to set this bit for one cycle, but couldn't do this. Is there anyway to set this bit without having to reset the PLC ? because when I switch of the power supply of the plc and restart it, the webpages are working fine. So I wanted to have a warm start of the webserver program without stopping the rest of the program. Quote Link to comment Share on other sites More sharing options...
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