ION8800 TOU

[Yut]

If the TOU module parameter was change during mesurement would there be any error in measurement ? In Thailand we set new holiday into the TOU module every time when yearly test was performed recently we were announced new public holiday to be in effective.

[Charles_Murison]

I am not sure I completly understand the question, the TOU module has a number of Booeal and pulse outputs. These outputs with some AN/OR type logic eventually get connected to a different modules enable input. When changes are sent to the meter, the TOU module is taken offline, updated then brought back online. While the module is offile, the outputs will be N/A. Modules downstream are not taken offline only possibly enable input go N/A for a very short period. 

[Yut]

Thank you. So if the output is N/A I'm not sure some integrator will pause or not.

Condition Response of Output Register
Input NOT AVAILABLE                     Integrating stops and the Result output holds the current value.
Enable input is OFF                         Integrating stops and the Result output holds the current value.
Module is re-linked or setup            registers changed The Result, Rollover Count and Trigger Count outputs go to zero.
Meter is started or powered-up      The output registers retain the values they held at shutdown.

N/A means OFF or  ON by default ? 

[Charles_Murison · Accepted solution]

N/A is typically off. usually the module is down for a very short period of time.

[Yut]

Thank you Charles.