DAD 141.1 Technical Manual, Rev. 2.5 – April 2015
Page 35 of 54
10.3. 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
period of time set by NT, during which it cannot fluctuate by more than NR increments. The stable condition
activates the relevant bit of responses to “Info Status” (IS).
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.
10.3.1. NR Set
‘No-motion’ Range
[
Index 0x2112
]
This is the range within which the weighing signal is allowed
to fluctuate and still be considered as “stable”.
Permitted values are from 1 to 65535.
Master (PC / SPS) sends
Slave (DAD 141.1) responds
Meaning
NR
R+00010
Request: NR = 10 d
NR 2
OK
Setup: NR = 2 d
WP
OK
Setup saved
Example: For NR = 2
the fluctuations within a maximum of ± 2 d, in the period NT, will be considered “stable”.
Factory default
: NR = 1 [= ±1d]
10.3.2. NT
Set
‘No-motion’ Time Period
[
Index 0x2114
]
This is the time period
(in milliseconds) over which the weight signal is checked to see if it is “stable” or has “no-
motion“. The weight signal has to vary by less than NR divisions over the time period NT to be considered
‘stable’.
Permitted values are from 1 to 65535.
Master (PC / SPS) sends
Slave (WCN-H 122.1) responds
Meaning
NT
T+01000
Request: NT = 1000 ms
NT 500
OK
Setup: NT = 500 ms
WP
OK
Setup saved
If the value of NT = 500 milliseconds, the output must not fluctuate more than NR increments within 500
milliseconds in order to be considered “stable”.
Factory default
: NT = 1000 [ms]