Siemens SITRANS F series Operating Instructions Manual page 305

Modbus Data type /
register Size in bytes
3416 Float / 4
3418 Float / 4
3424 Unsigned / 2
3425 Float / 4
3429 Float / 4
3427 Float / 4
3431 Float / 4
Table A- 97 Path 2 diagnostics
Modbus Data type /
register Size in bytes
3450 Float / 4
3452 Float / 4
3454 Float / 4
3456 Float / 4
3458 Float / 4
3460 Float / 4
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
Operating Instructions, 08/2017, A5E37367739-AC
Parameter Description
Travel time Travel time of down-
down path 1 stream signal
Correlation Correlation factor
factor path 1
Accepted burst % of bursts accepted
percentage (path 1).
path 1
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
1
Upstream peak Upstream signal peak
amplitude path amplitude
1
Downstream Downstream signal
peak amplitude peak amplitude
path 1
Fluid refraction Calculated fluid refrac-
angle path 1 tion angle on path 1
(clamp-on only).
Parameter Description
RxGain up path Rx gain of upstream
2 signal
RxGain down Rx gain of downstream
path 2 signal
SNR upstream Signal to noise ration
path 2 of upstream signal
SNR down- Signal to noise ration
stream path 2 of downstream signal
Sound velocity Sound velocity
path 2
Flow velocity Flow velocity
path 2
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
Access
level
Read
only
Read
only
Read
only
Read
only
Read
only
Read
only
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