P
AGE
17
3.1.2.6. TOTALIZER FACTOR
Scaling of the displayed total is possible, with the use of totalizer factor,
tFAC
. When used,
the displayed value is multiplied by a factor to obtain the actual total. See Table 3-2.
TABLE 3-2
tFAC
= 0
Actual Total = Displayed Total Times 1
tFAC
= -1
Actual Total = Displayed Total Times 10
tFAC
= -2
Actual Total = Displayed Total Times 100
tFAC
= -3
Actual Total = Displayed Total Times 1000
tFAC
= -4
Actual Total = Displayed Total Times 10000
tFAC
= 1
Actual Total = Displayed Total Times 0.1
tFAC
= 2
Actual Total = Displayed Total Times 0.01
tFAC
= 3
Actual Total = Displayed Total Times 0.001
Example
An application is measuring flow at a maximum rate of 6000 gallons per minute (6000 gpm).
The steady flow rate is 2000 gallons per minute (2000 pgm). Table 3-3 shows how, with
various settings in the Program mode, the process variable displayed and the total displayed
can be configured.
TABLE 3-3
6000 gpm, flow rate 2000 gpm
dPoS
Euu
EuL
PV
tdP
tFAC
Ftb
Total displayed at t = 1 min
0
6000
0
2000
0
0
2
XXXX2000
0
6000
0
2000
0
-1
2
XXXXX200
0
6000
0
2000
0
-3
2
XXXXXXX2
6000 gpm, flow rate 2000 pgm, PV in gps
dPoS
Euu
EuL
PV
tdP
tFAC
Ftb
Total displayed at t = 1 min
0
100
0
33
0
0
1
XXXX1980
0
100
0
33
0
-1
1
XXXXX198
0
100
0
33
0
-3
1
XXXXXXX1
6000 gpm, flow rate 2000 gpm, PV in gpm
dPoS
Euu
EuL
PV
tdP
tFAC
Ftb
Total displayed at t = 1 min
0
6000
0
2000
1
0
2
XXX2000.0
0
6000
0
2000
1
-3
2
XXXXXX2.0
6000 gpm, flow rate 2000 gpm, PV in gps
dPoS
Euu
EuL
PV
tdP
tFAC
Ftb
Total displayed at t = 1 min
0
100
0
33
1
1
1
XXX1980.0
0
100
0
33
1
-3
1
XXXXXX1.9
6000 gpm, flow rate 2000 gpm, PV in mgd
dPoS
Euu
EuL
PV
tdP
tFAC
Ftb
Total displayed at t = 1 min
3
8.640
0.000
0.002
0
0
4
XXXXXXX0
3
8.640
0.000
0.002
0
3
4
XXXXXXX2
3
8.640
0.000
0.002
2
3
4
XXXXX2.00
Содержание MRC 7800
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