Flintec EM100-C - Filter Setting Commands - FM, FL, UR; FM Filter Mode; FL Filter Setting

EM100-C User Manual
0084292
Page 36 of 81
5.4. Filter Setting Commands – FM, FL, UR
FIR or IIR Filters (selected with ‘FM’ command) are provided to eliminate most unwanted
disturbances. The command ‘FL’ is used to define the filter settings, whilst the command ‘UR’ is
used to define an averaging of up to 128 measurement values. Please note that these filters are
applied immediately after the A/D converter and therefore affect all aspects of the weighing
operation.
5.4.1. FM Filter Mode
This command defines the filter mode. Choose the filter mode for your application.
Permitted values are ‘0’ for IIR filter and ‘1’ for FIR filter.
Master Sends
Slave Responds With
Meaning
FM↵
M:00000
Request: FM=0 (IIR Filter).
FM 1↵
OK
Setup: FM=1 (FIR Filter).
WP↵
OK
Setup Saved.
The IIR filter operates as 2
nd
order low pass filter with Butterworth characteristics. The attenuation
is 40dB/decade (12 dB/octave). The digital FIR filter works as a low-pass filter with quick response
(see Mode Characteristics tables).
Default Setting: 0 [IIR filter].
5.4.2. FL Filter setting
This command defines the -3dB filter cut-off frequency.
Master Sends
Slave Responds With
Meaning
FL↵
F:00006
Request: FL=6 (1Hz IIR).
FL 1↵
OK
Setup: FL=1.
WP↵
OK
Setup Saved.
The permitted settings are from 0 to 8 (see Mode Characteristics tables).
Factory Default: 3 [Filter 3].