Precision Digital PD6730X - Manual (Page 75)

PD6730X Vantageview Super Snooper Modbus Scanner Instruction Manual
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The available parameters for PAR1, PAR2, and PAR3 show above are detailed below.
PAR Selection Parameter Description
PV 1 Modbus PV1 The scaled PV1 value; PV2 to PV16 also selectable
CV 1 Math Channel CV1 The math channel CV1 value; CV2 to CV4 also selectable
RATE Rate The pulse rate display rate value
TOTAL Total The total display value
GrTOTAL Grand Total The grand total display value
ABS Nested Absolute Value* Abs(L2 PAR1)
SQRT Nested Square Root* √(L2 PAR1)
SUM Nested Addition* L2P1 + L2P2
DIF Nested Difference* L2P1 - L2P2
MULTI Nested Multiplication * L2P1 * L2P2
DIVIDE Nested Division* L2P1 / L2P2
DIFABS Nested Absolute diff. * Abs(L2P1 - L2 PAR2)
WAVG Nested Weighted avg.* ((L2P1 – L2P2)* L2P3) + L2P2
DRAW Nested Draw* ((L2P1 / L2P2) – 1) * L2P3
RATIO Nested Ratio* (L2P1 / L2P2) * L2P3
CONCEN Nested Concentration* L2P1 / (L2P1 + L2P2) * L2P3
CONST Constant Constant value of 0.0001 to 99999
NONE None No parameter.
*Selecting this math function as a parameter will enter into the setup for a Nested Math Function. These
parameters are not available for level 2 parameters used when setting up the nested math function.
Nested Math Functions
To create more complicated math functions, the first level parameters allow a math function to be
selected as the parameter. In this case, a second level of parameters is selected for the nested math
function. These level 2 parameters are level 2 parameter 1, L2P1 (L2P1); level 2 parameter 2, L2P2
(L2P2); level 2 parameter 3, and L2P3 (L2P3). Level 2 parameters are selected similarly to other math
parameters; however additional nested math functions are unavailable for selection.
Entering a Constant Value
To enter a constant value, press Enter to select Constant (CONST). Value (VALUE) will display. Press
Enter
to confirm and enter a constant value. V.DP will display. Use the Up and Right arrows to select the
number of decimal points used in the constant value. Press Enter to select the number of decimal points
selected. Value will display. Set the constant value. See Setting Numeric Values on page 24 for more
information.
No Parameter (NONE)
Selecting a parameter of None will disable the math function. Any math function with a parameter of None
will display None (NONE) on the display as the value of the math function.
Gate Function (GATE)
The gate function is used for displaying slow pulse rates. Using the programmable gate, the meter is able
to display pulse rates as slow as 1 pulse every 9,999 seconds (0.0001 Hz). The gate function can also be
used to obtain a steady display reading with a fluctuating input signal.
There are two settings for the Gate, low gate (LO GaTE) and high gate (HI GATE).
Low Gate (LO GATE)
For most applications, low gate setting should be left at 1 second. Increase low gate setting to obtain a
steadier rate display. The rate display will update in accordance with the low gate setting, for example if
low gate is set at 10, the display will update every 10 seconds; changes in rate between updates will not
be reflected until next display update. The low gat may be set from 1 to 99 seconds.
To enter the Low Gate, press Enter to select Low Gate (LO GATE) and program the gate setting in
seconds. See Setting Numeric Values on page 24 for more information.