Siemens SITRANS F Series, Operating Instructions Manual, Page: 214 / 362

Modbus communication
A.9 Modbus holding registers tables
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
212
Operating Instructions, 08/2017, A5E37367739-AC
Channel 2 pulse output settings
Table A- 51 Channel 2 pulse output settings
Modbus
register
Data type /
Size in bytes
Parameter Description Default value
[units]
(units regis-
ter)
Value range /
Setting options
Access
level
8960 Unsigned / 2 Process value Select process value
for the pulse output.
0
• 0: Mass flow
•
1: Volume flow
• 27: Standard volume
flow rate (only hydro-
carbon and gas ap-
plications)
Read /
write
8962 Unsigned / 2 Flow direction Flow direction filter. 0
•
0: Positive direction
•
1: Negative direction
•
2: Positive and nega-
tive directions
Read /
write
8965 Float / 4 Amount of vol-
ume
Amount value to gen-
erate an output pulse.
Applicable if Process
value (8960) is set to 1.
0.001
[m
3
]
(8993)
- Read /
write
8963 Float / 4 Amount of
mass
Amount value to gen-
erate an output pulse.
Applicable if Process
value (8960) is set to 0.
1.0
[kg]
(8992)
- Read /
write
8967 Float / 4 Amount of
standard vol-
ume
Amount value to gen-
erate an output pulse.
Applicable if Process
value (8960) is set to
27.
1.0
[NI]
(8994)
- Read /
write
10055 Unsigned / 2 Pulses per
amount
Number of pulses
which will be output
when configured
amount is reached.
1 - Read /
write
8974 Float / 4 Pulse width Pulse duration. 0.1
[s]
0.00004 - 4.0 Read /
write
8977 Unsigned / 2 Polarity Logical polarity of
pulse output.
0
•
0: Active high level
• 1: Active low level
Read /
write