SCADAmetrics EtherMeter EM-100 User Manual

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EXAMPLE:
Consider the following case of a meter register installed on meter channel 1. This register contains
8 variable digits plus two (2) fixed zeros on the right. (EXP1=+2.)
R G
B
1 2 3 4 5 6 7
8
0 0
9
GALLONS
,,,
In this case, the actual total is 1,234,567,800 gallons. However, the [40001,40002] MODBUS
holding register will report the total as: 12,345,678. If scaling to GALLONS is desired, then the
polling device (master) must perform the scaling (multiply by 10
(EXPn)
or 10
[40022]
or 100).
Regarding flow, all reported flow rates are multiplied by 1000 to eliminate the need for floating point
formatting within the EtherMeter. In this case, if the actual flow rate is 987.6 GPM, then the
[40005,40006] MODBUS holding register will report the flow as 987,600 (milliGallons/minute). If
scaling to GPM is desired, then the polling device (master) must perform the floating point
conversion and scaling (divide by 1000).
On the LCD display and within the MODBUS flow registers, the following table displays the flow
units that pertain to the totalization units:
Totalization Units
Flow Units
Holding Register
Value (Registers
40023, 40024)
Gallons
Gallons Per [Hour,Minute,Sec]
0
Liters
Liters Per [Hour,Minute,Sec]
1
Cubic Feet
Cubic Feet Per [Hour,Minute,Sec]
2
Cubic Meters
Cubic Meters Per [Hour,Minute,Sec]
3
Pounds
Pounds Per [Hour,Minute,Sec]
4
Kilograms
Kilograms Per [Hour,Minute,Sec]
5
Acre Feet
Gallons Per [Hour,Minute,Sec]
6
Units
Units Per [Hour,Minute,Sec]
7
Figure 14B. Totalizer Unit Modbus Codes

SCADAmetrics EtherMeter EM-100 Specifications

General

Brand	SCADAmetrics
Model	EtherMeter EM-100
Category	Measuring Instruments
Language	English