Siemens SITRANS FST030 - Page 213

Channel 2 pulse output settings
Table A-52 Channel 2 pulse output settings
Modbus
register
Data type /
Size in bytes
Parameter Description Default value
[units]
(units register)
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
hydrocarbon and gas
applications)
Read /
write
8962 Unsigned / 2 Flow direction Flow direction filter. 0
● 0: Positive direction
● 1: Negative direction
● 2: Positive and
negative directions
Read /
write
8965 Float / 4 Amount of vol‐
ume
Amount value to gener‐
ate an output pulse. Ap‐
plicable if Process val‐
ue (8960) is set to 1.
0.001
[m
3
]
(8993)
- Read /
write
8963 Float / 4 Amount of mass Amount value to gener‐
ate an output pulse. Ap‐
plicable if Process val‐
ue (8960) is set to 0.
1.0
[kg]
(8992)
- Read /
write
8967 Float / 4 Amount of
standard vol‐
ume
Amount value to gener‐
ate an output pulse. Ap‐
plicable if Process val‐
ue (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
8961 Unsigned / 2 Fail-safe behav‐
ior
Pulse output reaction in
case of a fault.
2
● 0: Last valid value
● 1: Hold. Value 0.0
substitutes the actual
input value
● 2: Disabled
● 3: Custom value
● 4: Maximum pulses/s
on CH2 and no
pulses on CH3. Only
if CH3 is configured to
redundancy mode
Read /
write
Modbus communication
A.9 Modbus holding registers tables
SITRANS FST030 (Modbus)
Operating Instructions, 08/2018, A5E37367739-AD 213