Siemens SITRANS F series Operating Instructions Manual page 307

Modbus Data type /
register Size in bytes
3508 Float / 4
3510 Float / 4
3512 Float / 4
3514 Float / 4
3516 Float / 4
3518 Float / 4
3524 Unsigned / 2
3525 Float / 4
3529 Float / 4
3527 Float / 4
3531 Float / 4
Table A- 99 Path 4 diagnostics
Modbus Data type /
register Size in bytes
3550 Float / 4
3552 Float / 4
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
Operating Instructions, 08/2017, A5E37367739-AC
Parameter Description
Sound velocity Sound velocity
path 3
Flow velocity Flow velocity
path 3
Delta time path Delta time
3
Travel time up Travel time of up-
path 3 stream signal
Travel time Travel time of down-
down path 3 stream signal
Correlation Correlation factor
factor path 3
Accepted burst % of bursts accepted
percentage (path 3).
path 3
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
3
Upstream peak Upstream signal peak
amplitude path amplitude
3
Downstream Downstream signal
peak amplitude peak amplitude
path 3
Fluid refraction Calculated fluid refrac-
angle path 3 tion angle on path 3
(clamp-on only).
Parameter Description
RxGain up path Rx gain of upstream
4 signal
RxGain down Rx gain of downstream
path 4 signal
A.9 Modbus holding registers tables
Default value Value range /
[unit] Setting options
(unit register)
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
Default value Value range /
[unit] Setting options
(unit register)
- -
- -
Modbus communication
Access
level
Read
only
Read
only
Read
only
Read
only
Read
only
Read
only
Read
only
Read
only
Read
only
Read
only
Read
only
Access
level
Read
only
Read
only
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