# \[SOLVED\] Heartbeat in gateway events not running **URL:** \ **Category:** Ignition\ **Tags:** ignition81, scripting\ **Created:** [October 25, 2023, 7:06pm UTC](https://forum.inductiveautomation.com/t/solved-heartbeat-in-gateway-events-not-running/80986 "2023-10-25T19:06:50Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![Ruben\_Lima](https://avatars.discourse-cdn.com/v4/letter/r/2acd7d/32.png) [@Ruben\_Lima](https://forum.inductiveautomation.com/u/Ruben_Lima)\ **Post date:** [October 25, 2023, 7:06pm UTC](https://forum.inductiveautomation.com/t/solved-heartbeat-in-gateway-events-not-running/80986/1 "2023-10-25T19:06:50Z")
Hi, im doig a heartbeat between a contrologix and my geteway. I did it using this code server = "Ignition OPC UA Server" HeartBeatAddress = "ns=1;s=[Contrologix]HeartBeat" system.opc.writeValue(server, HeartBeatAddress, 1) i placed it in my edge getaway too because i wanted to do a fallback client and keep the program runnning. In my plc i just receive the value, and if its equal then i change the value to 0, and if it hasnt change in some seconds, flags a variable. It was working perfectly until i decided to do another one, vinculated with the gateway writing to another variable and in another clients getaway. In the first parts, i changed variables to see if it was something about the name, but one instance always kept running, in like the 10th change or try, the code just did nothing. I went back to the version in wich it was running and nothing happens. I already, restarted the 3 gateaways and the PLC. There are no loggs cause it seems to be executing the script, but in my PLC i receive nothing. ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/b/8/b8e3664a2e0c8b0c952e9bc5e010ee5016029ddb.png) ---
**Author:** ![dkhayes117](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/dkhayes117/32/68344_2.png) [@dkhayes117](https://forum.inductiveautomation.com/u/dkhayes117)\ **Post date:** [October 25, 2023, 7:39pm UTC](https://forum.inductiveautomation.com/t/solved-heartbeat-in-gateway-events-not-running/80986/2 "2023-10-25T19:39:13Z")
Double check your server name. At some point, the default was changed from `Ignition OPC UA Server` to `Ignition OPC-UA Server`. (Notice the dash) ---
**Author:** ![Ruben\_Lima](https://avatars.discourse-cdn.com/v4/letter/r/2acd7d/32.png) [@Ruben\_Lima](https://forum.inductiveautomation.com/u/Ruben_Lima)\ **Post date:** [October 25, 2023, 7:55pm UTC](https://forum.inductiveautomation.com/t/solved-heartbeat-in-gateway-events-not-running/80986/3 "2023-10-25T19:55:24Z")
just reviewed the servers in the main server and the 2 edges, they all are the same ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/d/c/dcf5d2adca07420c7a14261919de505ebce6d8a4.png) this is the diagnostics enable for the main server ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/9/b/9bb1e48b1cd95f404aa4dc9a8e4bee5131039046.png) ---
**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\ **Post date:** [October 25, 2023, 9:09pm UTC](https://forum.inductiveautomation.com/t/solved-heartbeat-in-gateway-events-not-running/80986/4 "2023-10-25T21:09:49Z")
> [@dkhayes117](#): > > Double check your server name. At some point, the default was changed from `Ignition OPC UA Server` to `Ignition OPC-UA Server`. (Notice the dash) The opposite, actually - it used to have the dash, and no longer does: [https://docs.inductiveautomation.com/display/DOC81/7.9+to+8.1+Upgrade+Guide#id-7.9to8.1UpgradeGuide-OPCUADefaultConfigurationChanges](https://docs.inductiveautomation.com/display/DOC81/7.9+to+8.1+Upgrade+Guide#id-7.9to8.1UpgradeGuide-OPCUADefaultConfigurationChanges) But worth calling out all the same 🙂 ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [October 25, 2023, 9:17pm UTC](https://forum.inductiveautomation.com/t/solved-heartbeat-in-gateway-events-not-running/80986/5 "2023-10-25T21:17:31Z")
On the VMs I use for random questions from all corners, subject to imports of all kinds, I duplicate the loopback connection with both names, so it **just works** â„¢. ---
**Author:** ![Ruben\_Lima](https://avatars.discourse-cdn.com/v4/letter/r/2acd7d/32.png) [@Ruben\_Lima](https://forum.inductiveautomation.com/u/Ruben_Lima)\ **Post date:** [October 26, 2023, 3:56pm UTC](https://forum.inductiveautomation.com/t/solved-heartbeat-in-gateway-events-not-running/80986/6 "2023-10-26T15:56:22Z")
Thanks all, actually it was something about the timers, my PLC was writing at the same frequency than ignition so it never changed the value. I just added a timer to the writing in my PLC and worked perfectly. ---
**Author:** ![JordanCClark](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/jordancclark/32/83362_2.png) [@JordanCClark](https://forum.inductiveautomation.com/u/JordanCClark)\ **Post date:** [October 26, 2023, 4:06pm UTC](https://forum.inductiveautomation.com/t/solved-heartbeat-in-gateway-events-not-running/80986/7 "2023-10-26T16:06:20Z")
Glad you got it working. Off topic: My vocabulary is fairly ample, but I did have to look up vinculate. I guess I'm not the very model of a modern major general. For those not familiar with the Pirates of Penzance. [![](https://us1.discourse-cdn.com/inductiveautomation/original/3X/0/8/08a90a568f75dc7b9217f28f334cc0db031994f7.jpeg "Pirates of Penzance - Modern Major General") ](https://www.youtube.com/watch?v=X--ngR15_JM) ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [October 26, 2023, 4:30pm UTC](https://forum.inductiveautomation.com/t/solved-heartbeat-in-gateway-events-not-running/80986/8 "2023-10-26T16:30:50Z")
> [@Ruben\_Lima](#): > > my PLC was writing at the same frequency than ignition so it never changed the value Ah, a common problem when a tag is written from two directions. Use two tags. Toggle or increment one regularly from Ignition for the PLC to monitor, and toggle/increment the other from the PLC for Ignition to monitor.