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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.)
RG
B
1 234567
8
00
9
GALLONS
,,,
In this case, the actual total is 1,234,567,800 gallons. However, the [N7:0,1] 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
[N7:21]
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
[N7:4,5] 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 Allen Bradley flow registers, the following table displays the
flow units that pertain to the totalization units:
Totalization Units Flow Units
Gallons Gallons Per [Hour,Minute,Sec]
Cubic Feet Cubic Feet Per [Hour,Minute,Sec]
Liters Liters Per [Hour,Minute,Sec]
Cubic Meters Cubic Meters Per [Hour,Minute,Sec]
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