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Modbus communication
A.9 Modbus holding registers tables
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
Operating Instructions, 08/2017, A5E37367739-AC
143
Modbus
register
Data type /
Size in bytes
Parameter
Description Default value
[units]
(units regis-
ter)
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 sec-
ond)
•
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 me-
ters per day)
•
188: Sm³/h (standard cubic me-
ters per hour)
•
189: Sm³/min (standard cubic
meters per minute)
190: Sm³/s (standard cubic me-
ters per second)
•
253: custom units (see Custom
standard volume flow units string
(7518) / factor (7516))
Read /
write