Instruction Manual
Tek-LCD 7801C
www.tek-trol.com
Technology Solutions
33
6.4
Channel Parameter
1.
Channel tag
: Editable
2.
Auto-generated
channel #
: Use to re-
order channels
3.
Function
*: This is the
function applied to
the input source
Scale
•
Scale
Factor
•
Scale Linear 2-Pt
•
Scale Multi-Point
•
Scale Square
Root
•
Scale
Exponent
•
Round Horz Tank*
•
Units Conversion
•
Percent
(Bargraph
)
•
Text
(Percent)
Math
•
Constant
•
Summation
•
Difference
•
Absolute
Differenc
e
•
Absolute Value
•
Average
•
Weighted Average
•
Multiply
•
Divide
•
Exponent
•
Logarithm
•
Modulo
Open Channel Flow
•
Parshall
Flumes
•
V-Notch Weirs
•
Cipolletti Weirs
•
Rectangular Weirs
w/o
Contractions
•
Rectangular Weirs
with Contractions
Compare
•
Greatest
•
Least
•
Middle of 3
Measure
•
Tare
•
Maximum
•
Minimum
•
Duration
•
Rate of Change
Filter
•
Window Average
•
IIR (First
Order)
•
Cutoff
•
Limits
•
Round
•
Hysteresis
•
Delay
•
Pulse
Filter
See Channel & Math
Functions
on page
15
for details.
Control
•
Sampler
•
On-Off Control
w/Randomizer
•
Select A or B
•
Select 1,2,3
•
Schedule
•
Capture
Relays
•
Cycle Count
•
Runtime
Modbus
•
Time Since Read
•
Time Since Write
Other
•
None (Reserved)
4.
Input
: Source for
the channel (PV)
•
mA Input (4-
20 mA)
•
Pulse Input
•
Digital Input
•
Modbus Input
•
Channel
•
Total
•
Timer
•
Alarm
•
mA Output
•
Relay Output
•
Digital Output
•
Modbus Output
5.
Units
: Engineering
units / time or
none
•
None
•
Time
•
Distance (Height)
•
Volume
•
Pressure
•
Weight
•
Temperature
•
Percent
•
Amps
•
Volts
•
Counts
•
Logic
•
Custom
6.
Decimals
: Number of
decimals for the PV
7.
Input scale
: Enter
input and output
values.
8.
Cutoff
: PV goes to
zero below the
cutoff value
9.
Soft keys
: This
change based on
the screen in place
10.
Bargraph scale
: Set
the 0 and 100%
values
11.
Display bargraph
:
Display on the
screen
12.
Colors
: Select the
bargraph & panel colors
