Siemens SITRANS FST030 - Page 149

Modbus
register
Data type /
Size in bytes
Parameter Description Default value
[units]
(units register)
Value range /
Setting options
Access
level
7964 Unsigned / 2 Standard vol‐
ume flow units
Units for
standard
volume
flow values.
188
● 121: Nm³/h (normal cubic meters
per hour)
● 122: Nl/h (normal liters per hour)
● 123: Sft³/min (standard cubic feet
per minute)
● 174: Nl/d (normal liters per day)
● 175: Nl/min (normal liters per
minute)
● 176: Nl/s (normal liters per
second)
● 177: Sl/d (standard liters per day)
● 178: Sl/h (standard liters per hour)
● 179: Sl/min (standard liters per
minute)
● 180: Sl/s (standard liters per
second)
● 181: Nm³/d (normal cubic meters
per day)
● 182: Nm³/min (normal cubic
meters per minute)
● 183: Nm³/s (normal cubic meters
per second)
● 184: Sft³/d (standard cubic feet
per day)
● 185: Sft³/h (standard cubic feet
per hour)
● 186: Sft³/s (standard cubic feet
per second)
● 187: Sm³/d (standard cubic
meters per day)
● 188: Sm³/h (standard cubic
meters per hour)
● 189: Sm³/min (standard cubic
meters per minute)
190: Sm³/s (standard cubic
meters per second)
● 253: custom units (see Custom
standard volume flow units string
(7518) / factor (7516))
Read /
write
Modbus communication
A.9 Modbus holding registers tables
SITRANS FST030 (Modbus)
Operating Instructions, 08/2018, A5E37367739-AD 149