Good day Sir,
The engine measurements data you supplied displays 1 representative of IOX-RS232 being connected to the GO device and 0 representative of IOX-RS232 being disconnected from the GO device. Overall, the data is showing an IOX cable being disconnected and reconnected about every half hour.
What were you testing for in this example as well as what time did you preform your testing?
If you were testing for disconnection and re-connection of an IOX cable then this data is representative of that. There also appears to be a brief period where an IOX cable was installed and removed around 1:00 pm.
You can find more documentation on IOX-RS232 here.
I hope this information helps. Please let me know if you have any additional questions and I will be happy to assist you.
Product Support Specialist