Emerson Rosemount OCX8800 - Filtering; Signal Conversion; Direct Signal Conversion; Figure 7-7 Analog Input Function Block Timing Diagram

Section 7: Foundation
Fieldbus
April 2017
Instruction Manual
IM-106-880C, OI
Figure 7-7 Analog Input Function Block Timing Diagram
7.11.3 Filtering
The filtering feature changes the response time of the device to smooth variations in output
readings caused by rapid changes in input. You can adjust the filter time constant (in seconds)
using the PV_FTIME parameter. Set the filter time constant to zero to disable the filter feature.
7.11.4 Signal Conversion
You can set the signal conversion type with the Linearization Type (L_TYPE) parameter. You can
view the converted signal (in percent of XD_SCALE) through the FIELD_VAL parameter.
You can choose from direct, indirect, or indirect square root signal conversion with the L_TYPE
parameter.
7.11.5 Direct signal conversion
Direct signal conversion allows the signal to pass through the accessed channel input value (or
the simulated value when simulation is enabled).
PV = Channel Value
118 Filtering