9
GF U3000 V2 Ultrasonic Flowmeter
Modbus Supplement to the operating instructions
135
134
Flow Side
Tempera-
ture
sint16
×100 ⁰C, ⁰F
e.g., 7557 = 75.57 ⁰C or ⁰F
R
Metric, Imperial
136
135
Return
Side
Tempera-
ture
sint16
×100 ⁰C, ⁰F
e.g., 3770 = 37.7 ⁰C or ⁰F
R
Metric, Imperial
137,
138
136, 137
Status
Flags
uint32
Update Primary Fwd Flow
total:1
RW
Action/Response bit. 1=update; Reset to
0 when complete.
Update Primary Rev Flow
total:1
Action/Response bit. 1=update; Reset to
0 when complete.
Update Primary Fwd Energy
total:1
Action/Response bit. 1=update; Reset to
0 when complete.
Update Primary Rev Energy
total:1
Action/Response bit. 1=update; Reset to
0 when complete.
Update Damping:1
Action/Response bit. 1=update; Reset to
0 when complete. Uses values in
Damping (Reg 135) and if dynamic
damping is selected, the value of
Dynamic Damping Acceleration
Threshold (Regs 145,146)
Reserved:11
Reserved allocation of 10 MS bits of reg
132
Reserved:13
Reserved allocation of 13 LS bits of reg
133
Hot probe fault:1
Faulty or disconnected hot probe
Cold probe fault:1
Faulty or disconnected cold probe
Signal Loss:1
Device is online and has lost signal
E.g., Signal loss and Hot Probe Failure
= 0b1010000000000000 = 0xC000
139
138
Damping
uint16
Damping Time:7
Damping Type:1
Reserved:8
RW
seconds
0=Fixed, 1=Dynamic
140
139
Q
uint16
Signal quality ×100
R
E.g., 94.3% = 9430 = 0x24D6
141
140
SNR
sint16
Signal to Noise ×100 in dB
R
E.g., 53.7dB = 5370 = 0x14FA
142
141
Signal
sint16
Signal ×100 in dB
R
E.g., 42.53dB = 4253 = 0x109D
143
142
Gain
sint16
Gain ×100 in dB
R
E.g., 25.07dB = 2507 = 0x9CB
144
143
Noise
sint16
Noise ×100 in dB
R
E.g., -11.7dB = -1170 = 0xFB6E
145,
146
144, 145
ETA
IEEE754 SP
Estimated Time of Arrival in μS R
147,148 146, 147
ATA
IEEE754 SP
Actual Time of Arrival in μS
R
149,150 148, 149
Accelerati-
on
Threshold
IEEE754 SP
Dynamic Damping Acceleration
Threshold
RW
m/sec2, ft/sec2, ft/sec2,
151-200 150-199
Reserved uint16 x50
Not used.
RZ
Primary Flow Board. Reads zero. Not
used. Future Expansion.
201-300 200-299
Reserved
RZ
Secondary Flow Board. Reads zero. Not
used. Future Expansion.