Accuracy withing a degree or two consistently would be acceptable. That's why I felt with a course update time of 4ms and a 5.56ms per degree actual speed then it should be ok just using the actualposition.
As an example we might see product via a photoeye at 22 degrees and dissapear at 208 degrees so we check either side of that to make sure the sides haven't fallen open. So a windows is programmed a few degrees away and if the sensor is still high during this window it will fault the machine.
Initially I was seeing big variations in where this sensor saw the product at different speed. But today its running fine. It would be a consistent variation and it wasn't slipping. I was just worried that with the time not synced that maybe that was an indication that something wasn't updating correctly or quickly enough.
As an example we might see product via a photoeye at 22 degrees and dissapear at 208 degrees so we check either side of that to make sure the sides haven't fallen open. So a windows is programmed a few degrees away and if the sensor is still high during this window it will fault the machine.
Initially I was seeing big variations in where this sensor saw the product at different speed. But today its running fine. It would be a consistent variation and it wasn't slipping. I was just worried that with the time not synced that maybe that was an indication that something wasn't updating correctly or quickly enough.