EM100-C User Manual
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Page 35 of 81
5.3. Motion Detection Commands – NR, NT
The motion detection facility provides a means of disabling certain functions whenever a condition of
instability, or ‘motion’, is detected. The ‘no-motion’ or ‘stable’ condition is achieved whenever the
signal is steady for the time-period set by ‘NT’, during which it cannot fluctuate by more than ‘NR’
increments. The ‘stable’ condition activates the relevant bit in the System Status (‘IS’) result.
Following functions are disabled if motion is detected: Calibrate Zero ‘CZ’ Calibrate Gain ‘CG’ Set
Zero ‘SZ’ and Set Tare ‘ST’. After such a command, the system returns an error ‘ERR’, if the signal
is not ‘stable’.
5.3.1. NR Set No-Motion Range
This is the range within which the weighing signal can fluctuate and still be considered as ‘stable’.
Permitted values are from 0 to 65535.
Example: For NR=2 the fluctuations within a maximum of ±2d, in the period ‘NT’, will be considered
‘stable’.
Factory Default: 1 [±1d].
5.3.2. NT Set No-Motion Time
This is the time-period (in milliseconds) over which the weight signal is checked to be ‘stable’ or not.
The weight signal must vary less than ‘NR’ divisions over the time-period ‘NT’ to be considered
‘stable’.
Permitted values are from 0 to 65535ms.
If the value of ‘NT’=500ms, the output must not fluctuate more than ‘NR’ increments within 500ms to
be considered ‘stable’.
Factory Default: 1000 [1000ms].
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