SCADAmetrics EtherMeter EM-100, Инструкция по установке, эксплуатации и обслуживанию

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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 [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
N-Register Values
(N7:22, N7:23)
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 15A. Totalizer Unit N-Register Codes