Siemens SITRANS F series Operating Instructions Manual page 147

Modbus Data type /
register Size in bytes
8015 Unsigned / 2
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
Operating Instructions, 08/2017, A5E37367739-AC
Parameter Description Default value
Pressure units Units for
pressure
values.
A.9 Modbus holding registers tables
Value range /
[units] Setting options
(units regis-
ter)
11
1: inH2O (inches of water at 68
•
°F)
2: inHg (inches of mercury at 0
•
°C)
3: ftH2O (feet of water at 68 °F)
•
4: mmH2O (millimeters of water
•
at 68 °F)
5: mmHg (millimeters of mercury
•
at 0 °C)
6: psi (pounds per square inch)
•
7: bar
•
8: mbar
•
9: gf/cm² (grams force per
•
square cm)
10: kgf/cm² (kilogram force per
•
square cm)
11: Pa (pascal)
•
12: kPa (kilopascal)
•
13: torr
•
14: atm (atmosphere)
•
170: cmH2O (centimeters of
•
water at 4 °C)
171: mH2O (meters of water at 4
•
°C)
172: cmHg (centimeters of mer-
•
cury at 0 °C)
173: lb/ft² (pounds per square
•
foot)
174: hPa (hectopascal)
•
176: kg/m² (kilograms per square
•
meter)
177: ftH2O (feet water at 4 °C)
•
178: ftH2O (feet water at 60 °F)
•
179: mHg (meters of mercury at
•
0 °C)
237: MPa (Megapascal)
•
238: in ftH2O (inches of water at
4 °C)
239: mmH2O (millimeters of
•
water at 4 °C)
Modbus communication
Access
level
Read /
write
145