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Helios PD2-6100 Strain Gauge, Load Cell, and mV Meter
Advanced Features Menu & Display Messages
Display
Parameter
200nmV
200 mV
calibration
stroff
Strain offset
V Lo
mV low
V Hi
mV high
Diag
Diagnostics
LED t
LED test
Info
Information
Erase
Erase
Noise Filter (filter)
The noise filter is available for unusually noisy signals
that cause an unstable process variable display. The
noise filter averages the input signal over a certain
period. The filter level determines the length of time
over which the signal is averaged. The filter level can
be set between 2 and 199. The higher the filter level,
the longer the averaging time and so the longer it
takes the display to settle to its final value. Setting the
filter level to zero disables the filter function.
Noise Filter Bypass (bypass)
The noise filter bypass changes the behavior of the
meter so that small variations in the signal are filtered
out but large abrupt changes in the input signal are
displayed immediately. The bypass value determines
the minimum amount of signal change to be displayed
immediately. All signal changes smaller than the
bypass value are filtered or averaged by the meter.
The noise filter bypass may be set between 0.1 and
99.9% of full scale.
Action/Setting
Calibrate 300 mV input
range (internal reference
source used for scaling the
input)
Calibrate the offset of the
input circuit
Calibrate low mV input
(e.g. 0 mV)
Calibrate high mV input
(e.g. 100 mV)
Display test and
information
Test all LEDs
Display software number
and version
Erase MeterView Pro
software stored in meter's
memory
44
Rounding Feature (round)
The rounding feature is used to give the user a
steadier display with fluctuating signals. Rounding is
used in addition to the filter function.
Rounding causes the display to round to the nearest
value according to the rounding selected. See
examples below:
Rounding
Actual
Display
Selection
Value
Value
1
12.022
12.022
5
12.022
12.020
10
12.024
12.020
Modbus RTU Serial
Communications (serial)
The meter is equipped with serial communications
capability as a standard feature using Modbus RTU
Serial Communication Protocol.
The meter may be connected to a PC for initial
configuration via the onboard USB connection. For
ongoing digital communications with a computer or
other data terminal equipment, use the RS-485
connection with the appropriate serial converter; see
Ordering Information on page 6 for details.
•
DO NOT connect any equipment to the RJ45
M-LINK connector. Otherwise damage will occur
to the equipment and the meter.
•
DO NOT disconnect the RJ45 connector located
to the left of the power terminal block. Doing so
will disable the on-board digital I/O, and the
RS-485 serial communications.
Notes:
1.
More detailed instructions are provided with each
optional serial communications adapter.
2.
Refer to the Helios Modbus Register Tables
located at
www.predig.com
When using more than one meter in a multi-drop
mode, each meter must be provided with its own
unique address. The meter address (Slave ID) may
be programmed between 1 and 247. The transmit
delay may be set between 0 and 199 ms. The parity
can be set to even, odd, or none with 1 or 2 stop bits.
Instruction Manual
Actual
Display
Value
Value
12.023
12.023
12.023
12.025
12.025
12.030
for details.
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