Siemens SITRANS F Series, Руководство по эксплуатации, Страница: 309 / 362

Modbus communication
A.9 Modbus holding registers tables
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
Operating Instructions, 08/2017, A5E37367739-AC
307
Table A- 100 Path 5 diagnostics
Modbus
register
Data type /
Size in bytes
Parameter Description Default value
[unit]
(unit register)
Value range /
Setting options
Access
level
3600 Float / 4 RxGain up path
5
Rx gain of upstream
signal
- - Read
only
3602 Float / 4 RxGain down
path 5
Rx gain of downstream
signal
- - Read
only
3604 Float / 4 SNR upstream
path 5
Signal to noise ration
of upstream signal
- - Read
only
3606 Float / 4 SNR down-
stream path 5
Signal to noise ration
of downstream signal
- - Read
only
3608 Float / 4 Sound velocity
pah 5
Sound velocity - - Read
only
3610 Float / 4 Flow velocity
path 5
Flow velocity - - Read
only
3612 Float / 4 Delta time path
5
Delta time - - Read
only
3614 Float / 4 Travel time up
path 5
Travel time of up-
stream signal
- - Read
only
3616 Float / 4 Travel time
down path 5
Travel time of down-
stream signal
- - Read
only
3618 Float / 4 Correlation
factor path 5
Correlation factor - - Read
only
3624 Unsigned / 2 Accepted burst
percentage
path 5
% of bursts accepted
(path 5).
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.
- - Read
only
3625 Float / 4 Actual sensor
frequency path
5
Sensor frequency - - Read
only
3629 Float / 4 Upstream peak
amplitude path
5
Upstream signal peak
amplitude
- - Read
only
3627 Float / 4 Downstream
peak amplitude
path 5
Downstream signal
peak amplitude
- - Read
only
3631 Float / 4 Fluid refraction
angle path 5
Calculated fluid refrac-
tion angle on path 5
(clamp-on only).
- - Read
only