Posted 25 May 2016 The TXA-RXA, TXB-RXB is the terminals for the cable connection on each 485BD/485ADP-MB unit. The WtobTmp is a local label in the 1.00 version of the communication blocks, that's the version I found in the old GX Worx project on my hard drive. The RX led shall flash when you have activity on the line from the remote Modbus unit. I can take a look inside your project if you want, just attach it to a pm Share this post Link to post Share on other sites
Posted 6 Jun 2016 Thank You Bryll, it is very nice. Sorry for long delay with answer, I was out from the job. Unfortunately, the project size is above 6MB and maximum size for upload is 3.91MB. Though, after archiving the project's file size is 1.5MB only, I still get the message, that the maximum size for upload is 3.91MB. Can I send You the project to Your email address, please? Share this post Link to post Share on other sites
Posted 7 Jun 2016 (edited) I sent it with personal message. Thank You Edited 7 Jun 2016 by wlederer error Share this post Link to post Share on other sites
Posted 7 Jun 2016 Thank You Bryll. Works fine now. Regards, Waldemar Share this post Link to post Share on other sites