Communications Options User’s Guide
9
Chapter 1. Modbus Communications
10.
Descriptions:
For the GF868, register numbers 26, 27 and 59, 60 have the description Molecular Weight.
For the GN868, register numbers 26, 27 and 59, 60 have the description Fpv.
Table 4: MODBUS Registers for a 1-Channel Liquid Flowmeter
MODBUS Reg #
Description
Scaling
(decimal places)
Size in Bytes
1
1
Clear Totalizers
2 (16 bit signed int)
2, 3**
Velocity
2
4 (32 bit Long Integer)
4, 5*
Volumetric
--
4 (IEEE 32 bit Float)
6, 7**
+Totals
Register 10
4 (32 bit Long Integer)
8, 9**
–Totals
Register 10
4 (32 bit Long Integer)
10
#T Digits
0
2 (16 bit signed int)
11, 12**
Totalizer Time
2
4 (32 bit Long Integer)
13
2
Error Value
0
2 (16 bit signed int)
14, 15**
SSUP
1
4 (32 bit Long Integer)
16, 17**
SSDN
1
4 (32 bit Long Integer)
18, 19**
SNDSP
0
4 (32 bit Long Integer)
56, 57*
Power
--
4 (IEEE 32 bit Float)
58, 59**
+Energy
Register 62
4 (32 bit Long Integer)
60, 61**
–Energy
Register 62
4 (32 bit Long Integer)
62
# Energy Digits
0
2 (16 bit signed int)
63, 64**
TempS
2
4 (32 bit Long Integer)
65, 66**
TempR
2
4 (32 bit Long Integer)
67, 68**
TS-TR
2
4 (32 bit Long Integer)
69, 70**
DELTH
2
4 (32 bit Long Integer)
86, 87*
5
Slot 1 Input A
4 (IEEE 32 bit Float)
88, 89*
5
Slot 1 Input B
4 (IEEE 32 bit Float)
90, 91*
Slot 2 Input A
4 (IEEE 32 bit Float)
92, 93*
Slot 2 Input B
4 (IEEE 32 bit Float)
94, 95*
Slot 3 Input A
4 (IEEE 32 bit Float)
96, 97*
Slot 3 Input B
4 (IEEE 32 bit Float)
98, 99*
Slot 4 Input A
4 (IEEE 32 bit Float)
100, 101*
Slot 4 Input B
4 (IEEE 32 bit Float)
102, 103*
Slot 5 Input A
4 (IEEE 32 bit Float)
104, 105*
Slot 5 Input B
4 (IEEE 32 bit Float)
106, 107*
Slot 6 Input A
4 (IEEE 32 bit Float)
108, 109*
Slot 6 Input B
4 (IEEE 32 bit Float)
508
6
MODBUS baud rate
0
2 (16 bit signed int)
509
7
MODBUS parity
0
2 (16 bit signed int)
510
8
MODBUS stop bits
0
2 (16 bit signed int)
511
MODBUS meter address
0
2 (16 bit signed int)
