Siemens SITRANS F Series, Руководство по эксплуатации, Страница: 146 / 362

Modbus communication
A.9 Modbus holding registers tables
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
144
Operating Instructions, 08/2017, A5E37367739-AC
Modbus
register
Data type /
Size in bytes
Parameter Description Default value
[units]
(units regis-
ter)
Value range /
Setting options
Access
level
8014 Unsigned / 2 Flow velocity
units
Units for
flow veloci-
ty values.
21
• 20: ft/s (feet per second)
•
21: m/s (meters per second)
• 114: in/s (inches per second)
•
115: in/min (inches per minute)
• 116: ft/min (feet per minute)
•
120: m/h (meters per hour)
• 253: custom units (see Custom
velocity units string (8494) / fac-
tor (8492))
Read /
write
7648 Unsigned / 2 Sound velocity
units
Units for
sound
velocity
values.
21
•
20: ft/s (feet per second)
•
21: m/s (meters per second)
•
114: in/s (inches per second)
•
115: in/min (inches per minute)
•
116: ft/min (feet per minute)
•
120: m/h (meters per hour)
•
253: custom units (see Custom
velocity units string (8494) / fac-
tor (8492))
Read /
write
7600 Unsigned / 2 Density units Units for
density
values.
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
7524 Unsigned / 2 Viscosity units Units for
viscosity
values.
54
• 54: cSt (centistokes, 1 cSt = 1
mm²/s)
Read /
write