Siemens SITRANS F series Operating Instructions Manual page 308

Modbus communication
A.9 Modbus holding registers tables
Modbus Data type /
register Size in bytes
3554 Float / 4
3556 Float / 4
3558 Float / 4
3560 Float / 4
3562 Float / 4
3564 Float / 4
3566 Float / 4
3568 Float / 4
3574 Unsigned / 2
3575 Float / 4
3579 Float / 4
3577 Float / 4
3581 Float / 4
306
Parameter Description
SNR upstream Signal to noise ration
path 4 of upstream signal
SNR down- Signal to noise ration
stream path 4 of downstream signal
Sound velocity Sound velocity
path 4
Flow velocity Flow velocity
path 4
Delta time path Delta time
4
Travel time up Travel time of up-
path 4 stream signal
Travel time Travel time of down-
down path 4 stream signal
Correlation Correlation factor
factor path 4
Accepted burst % of bursts accepted
percentage (path 4).
path 4
Based on various di-
agnostic input (i.e.
correlation strength,
gain level, SNR, etc.)
the meter may reject
specific up/down re-
ceived sets or bursts.
The percentage of
accepted bursts is one
measure of the appli-
cation's health.
Actual sensor Sensor frequency
frequency path
4
Upstream peak Upstream signal peak
amplitude path amplitude
4
Downstream Downstream signal
peak amplitude peak amplitude
path 4
Fluid refraction Calculated fluid refrac-
angle path 4 tion angle on path 4
(clamp-on only).
Default value Value range /
[unit] Setting options
(unit register)
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
Operating Instructions, 08/2017, A5E37367739-AC
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