Set Alarm with bit stops switching

[NickatNite8724]

I am trying to set up an alarm on a Red Lion touchscreen that is connected to an Allen Bradley PLC through a wireless link from dredge to dredge about a mile away. I have a bit that flashes between 0 and 302 every second to indicate that the communication is active between the 2 devices. I want to flash COM Loss on the screen if that link is loss. The red lion display uses Crimson 3 which uses C++. I know some C programing but I not an expert at all. I am thinking I need to set up a while loop but I'm not sure how to structure it. It would be easier if the value changed to a different number, but all I have to work with is the 0 and 302. If the Red Lion screen doesn't see those values switch after 10 seconds I want the screen to flash. Can anybody please help me with this. I am slightly loss and not sure how to proceed. Thanks in advance for your time.

[SamuelAdams]

If you have access to the code, you'll need to determine which value in the code displays the 0 - 302.

If the program is like most and there are no comments, you might look for help on the forum / helpdesk from the company that makes it.

The trick will then be to create your check, without disrupting the running program very much.

I looked http://www.yamaharobotics.com/Integration/?oid=98061c2eed2e4d0088bd6cff202f7d18 and found source code but it's in some .cd3 format. I'm not sure how to edit that.

I'm going to guess, but I'd look for a loop that already exist and insert your code.