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Modbus
register
Data type /
Size in bytes
Parameter
Description Default value
[units]
(units register)
Value range /
Setting options
Access
level
7600
Unsigned / 2
Density units
Units for
density val‐
ues.
92
● 91: g/cm³ (grams per cubic)
centimeters
● 92: kg/m³ (kilograms per cubic
meter)
● 93: lb/gal (pounds per US gallon)
● 94: lb/ft³ (pounds per cubic foot)
● 95: g/ml (grams per mililiter)
● 96: kg/l (kilograms per liter)
● 97: g/l (grams per liter)
● 98: lb/in³ (pounds per cubic inch)
● 99: STon/yd³ (1 STon = 2000 lb)
● 146: μg/l (micrograms per liter)
● 147: μg/m³ (micrograms per cubic
meter)
● 170: mg/l (milligrams per liter)
● 253: custom units (see Custom
density units string (8464) / factor
(8462))
Read /
write
7700
Unsigned / 2
Temperature
units
Units for
tempera‐
ture values.
32
● 32: °C (degrees Celsius)
● 33: °F (degrees Fahrenheit)
● 34: °R (degrees Rankine)
● 35: K (kelvins)
Read /
write
8321
Unsigned / 2
Totalizer 1 units Units for
volume
quantities
of totalizer
1 (totalizer
1 is config‐
ured to vol‐
ume flow).
41
● 40: US gallons
● 41: l (liters)
● 42: i.gal (Imperial gallons)
● 43: m³ (cubic meters)
● 46: BBL42 (1 barrel = 42 US
gallons)
● 110: bush (bushels)
● 111: yd³ (cubic yards)
● 112: ft³ (cubic feet)
● 113: in³ (cubic inches)
● 124: BBL31.5 (1 barrel = 31.5 US
gallons)
● 170: BBL31 (1 barrel = 31 US
gallons)
● 236: hl (hectoliters)
● 253: custom units (see Custom
volume units string (8452) / factor
(8450))
Read /
write
MODBUS commands
4.10 Modbus holding registers tables
FCT030 Modbus (From firmware 4.0)
Function Manual, 06/2018, A5E39931813-AB
49