# Mircologix 1400 **URL:** \ **Category:** General Discussion\ **Created:** [May 23, 2017, 4:03pm UTC](https://forum.inductiveautomation.com/t/mircologix-1400/14378 "2017-05-23T16:03:28Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![HALW80](https://avatars.discourse-cdn.com/v4/letter/h/47e85d/32.png) [@HALW80](https://forum.inductiveautomation.com/u/HALW80)\ **Post date:** [May 23, 2017, 4:03pm UTC](https://forum.inductiveautomation.com/t/mircologix-1400/14378/1 "2017-05-23T16:03:28Z")
I have 13 Micrologix 1400 PLC connected to Ignition via Ewon VPN using GSM SIM. They are Series B PLCs. We have added external antenna but still there is a few that keep dropping out and Ignition showing connecting determining protocol/disconnecting protocol. They do connect for while then drop out again. connection path is set to 1,0 timeout at 120000 browse cache at 240000 Ewon VPN is staying connected and I can get online to Ewon see its settings Any other things to look at please ---
**Author:** ![dcamp](https://avatars.discourse-cdn.com/v4/letter/d/a88e4f/32.png) [@dcamp](https://forum.inductiveautomation.com/u/dcamp)\ **Post date:** [May 24, 2017, 12:44pm UTC](https://forum.inductiveautomation.com/t/mircologix-1400/14378/2 "2017-05-24T12:44:37Z")
We don’t have this exact setup, but we do use a lot of VPN Tunnels with the Multitech Modem’s. In the beginning we also experienced drop outs, but after talking with Multitech they recommended that we setup a “Keep Alive” protocol in the modem. This is done buy telling the modem to "Ping [www.google.com](http://www.google.com) (we chose [google.com](http://google.com) because they have the best up time of any) every 30 minutes and there must be 8 successful replys or the modem will automatically reboot and make a FRESH connection. Since we made these changes we have NOT had any problems since and this has been at least 18 months ago. Just an Idea!! ---
**Author:** ![HALW80](https://avatars.discourse-cdn.com/v4/letter/h/47e85d/32.png) [@HALW80](https://forum.inductiveautomation.com/u/HALW80)\ **Post date:** [May 24, 2017, 1:59pm UTC](https://forum.inductiveautomation.com/t/mircologix-1400/14378/3 "2017-05-24T13:59:10Z")
Thanks dcamp. Will investigate similar but the Ewon VPN is already set at “maintained connection” but still having drop outs. ---
**Author:** ![zackscriven](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/zackscriven/32/7213_2.png) [@zackscriven](https://forum.inductiveautomation.com/u/zackscriven)\ **Post date:** [May 24, 2017, 11:14pm UTC](https://forum.inductiveautomation.com/t/mircologix-1400/14378/4 "2017-05-24T23:14:54Z")
I’d be curious to see if you experienced a similar connection issue using KepServerEX