
PLX51-HART-4I / PLX51-HART-4O
♦
HART Input/Output
Diagnostics
Multidrop Field Devices
User Manual
ProSoft Technology, Inc.
Page 112 of 127
The module is capable of storing up to 1000 trend points which are sampled at a
user-configurable interval. The user can choose between one of the following
sources:
•
Raw Analog Current (4-20 mA)
•
Filtered Scaled Value
•
Digital Current
•
Primary Variable (PV)
•
Secondary Variable (SV)
•
Third Variable (TV)
•
Fourth Variable (FV)
Figure 5.20 - Channel Status – Trend
Once the source or sample rate has been modified, the
Apply
button must be clicked
for the changes to take effect. This will also result in the existing trend data being
cleared. The Y axis scale can be modified by adjusting the
Min
and
Max
value and
clicking the
Refresh
button. To automatically update the trend every second, the
Auto
check box can be selected.