Is there a way to resend alert text messages after five minutes or so of an alarm going unacknowledged?
No, there is no built-in method for that.
Do you have any suggestions for a work around?
Well, you could possibly create a gateway side timer script that checks to see if there have been any unacked alarms past 5 minutes and send an email using system.net.sendEmail. Using that method will not send the same email as the Ignition system though.
Check sms reception center.
We have used it with Ignition and it works great.
Thanks Travis. And thanks Tommi. I will look into these options.