Precision Digital PD6080 - Manual (Page 10)

PD6080/PD6081 Super Snooper Modbus Scanner Instruction Manual
10
PV Settings
TAG & UNITS 6-character, independent tag and units for each PV and math channel
PV FORMAT PD6080 default: Decimal format
PD6081 default: FT & IN, 1/8
th
or 1/16
th
; decimal format may be selected for
bottom display indication.
DISPLAY DECIMAL
POINT Up to five decimal places or none: d . ddddd, dd . dddd, ddd . ddd, dddd . dd,
ddddd . d, or dddddd
FLOAT
DECIMAL POINT Select the number of decimals to use for the floating point data expected from
the slave or master device (this is independent from the display decimal point selection).
PV & MATH
SCALING All PVs and math channels may be scaled to represent the input data in any
engineering unit.
Example: Level transmitter = 999.999 inches; to display in Ft-In-1/16
th
scale
input 2 to display 83 Ft – 4 In – 0/16 th .
Display Settings
SCAN MODE Automatic: 1.0 to 99.9 sec
Manual: Front panel or digital inputs
Go on alarm: Continues scanning after an alarm is detected
Stop on alarm: Goes to the alarmed PV and stops scanning; press Scan to
resume scanning.
DISPLAY
SCAN RATE Master/Snooper: 1 PV/second to 1 PV every 99.9 seconds
Slave: Dependent on master device (e.g. PLC)
Note: The display scan rate is independent of the poll time.
DISPLAY
ASSIGNMENT
The top display may be assigned to PV (process values), Ch-C (math
channel), PV & units, tag & PV, tag-PV-units, C & units, tag-C-unit, Set point
1-8, max/min PV, max/min C.
The bottom display may be assigned to all of the above, tag, tag & units, or off.
The tag and units are displayed alternately for 2 sec max, when selected.
Different tags & PVs may be selected to display on the top and bottom displays
at the same time.
Math Functions
Name Math Operation (Examples)
(P = Adder, F = Factor)
Setting
Addition (PV1+PV2+P)*F Sunm
Difference (PV1-PV2+P)*F diF
Absolute difference ((Abs(PV1- PV2)+P)*F diFAbS
Average (((PV1+PV2)/2)+P)*F AvG
Multiplication ((PV1*PV2)+P)*F Nmulti
Division ((PV1/PV2)+P)*F divide
Max PV Max value of all selected PVs Hi-pv
Min PV Min value of all selected PVs Lo-pv
Draw ((PV1/PV2)-1)*F drAuw
Weighted average ((PV2-PV1)*F)+PV1 uwavg
Ratio (PV1/PV2)*F Ratio
Concentration (PV1/(PV1+PV2))*F Concen
Math 2 Math on other math channels Nmath2
PROGRAMMABLE
CONSTANTS Constant P (Adder): -99.999 to 999.999, default: 0.000
Constant F (Factor): 0.001 to 999.999, default: 1.000