Chapter 6. MODBUS Communications
168
Sentinel LNG User’s Manual
6.2 Setting Up MODBUS Communications (cont.)
Note:
Regarding meter status, each bit field indicates the error number from LSB corresponding to E1, and from
MSB corresponding to E32.
Note:
Writing any non-zero value will clear the totals (unless they are locked using
TOT LOCK/KEY LOCK
switches on
the front panel - per MID requirements).
Note:
Writing to
COMP
will clear all channels.
Note:
The
Modbus Register Map
, Table 4 on page 168, has some fields highlighted in
BLUE
. These are currently not
supported and will return a value of –1.0.
Table 4: Modbus Register Map
Category Measurement Type Size Format
Composite
Register
Address
Channel 1
Register
Address
Channel 2
Register
Address
Channel 3
Register
Address
Channel 4
Register
Address
Primary
Measuran
d
Velocity
F
2 LSW float
1 0x0000 1025 0x0400 2049 0x0800 3073 0x0C00 4097 0x1000
Volumetric
F
2 LSW float
3 0x0002 1027 0x0402 2051 0x0802 3075 0x0C02 4099 0x1002
Std Volumetric
F
2 LSW float
5 0x0004 1029 0x0404 2053 0x0804 3077 0x0C04 4101 0x1004
Mass Flow
F
2 LSW float
7 0x0006 1031 0x0406 2055 0x0806 3079 0x0C06 4103 0x1006
Energy Rate
F
2 LSW float
9 0x0008 1033 0x0408 2057 0x0808 3081 0x0C08 4105 0x1008
Transit
Time
Soundspeed
F
2 LSW float
11 0x000A 1035 0x040A 2059 0x080A 3073 0x0C00 4097 0x1000
Up Transit
F
2 LSW float 13 0x000C 1037 0x040C 2061 0x080C 3075 0x0C02 4099 0x1002
Dn Transit
F
2 LSW float
15 0x000E 1039 0x040E 2063 0x080E 3077 0x0C04 4101 0x1004
DeltaT
F
2 LSW float
17 0x0010
1041 0x0410 2065 0x0810 3079 0x0C06 4103 0x1006
UP Sig Strength
F
2 LSW float
19 0x0012 1043 0x0412 2049 0x0812 3091 0x0C12
4115 0x1012
DN Sig
Strength
F
2 LSW float
21 0x0014 1045 0x0414 2051 0x0814 3093 0x0C14 4117 0x1014
Gain Up[dB]
F
2 LSW float
23 0x0016 1047 0x0416 2053 0x0816 3095 0x0C16 4119 0x1016
Receiver
Diagnosti
cs
Gain Dn[dB]
F
2 LSW float 25 0x0018 1049 0x0418 2055 0x0818 3097 0x0C18 4121 0x1018
UP DAC
F
2 Unsigned
integer
27 0x001A 1051 0x041A 2057 0x081A 3099 0x0C1A 4123 0x101A
DN DAC
F
2 Unsigned
integer
29 0x001C 1053 0x041C 2059 0x081C 3101 0x0C1C 4125 0x101C
UP Amp
Discrim
F
2 LSW float
31 0x001E
1055 0x041E 2061 0x081E 3103 0x0C1E
4127 0x101E
DN Amp
Discrim
F
2 LSW float 33 0x0020 1057 0x0420 2063 0x0820 3105 0x0C20 4129 0x1020
PEAK%
F
2 LSW float 35 0x0022 1059 0x0422 2083 0x0822 3107 0x0C22 4131 0x1022
UP Signal Q
F
2 LSW float 37 0x0024 1061 0x0424 2085 0x0824 3109 0x0C24 4133 0x1024
DN Signal Q
F
2 LSW float 39 0x0026 1063 0x0426 2087 0x0826 3111 0x0C26 4135 0x1026
Signal
Processing
Diagnosti
cs
UP +– Peak
F
2 LSW float 41 0x0028 1065 0x0428 2089 0x0828 3113 0x0C28 4137 0x1028
DN +– Peak
F
2 LSW float 43 0x002A 1067 0x042A 2091 0x082A 3115 0x0C2A 4139 0x102A
UP Norm
Factor
F
2 LSW float 45 0x002C 1069 0x042C 2093 0x082C 3117 0x0C2C 4141 0x102C
DN Norm
Factor
F
2 LSW float 47 0x002E 1071 0x042E 2095 0x082E 3119 0x0C2E 4143 0x102E
Theta 3
F
2 LSW float 49 0x0030 1073 0x0430 2097 0x0830 3121 0x0C30 4145 0x1030
CEE1
F
2 LSW float
51 0x0032 1075 0x0432 2099 0x0832 3123 0x0C32 4147 0x1032
Содержание Sentinel LCT
Страница 2: ......
Страница 4: ...ii no content intended for this page...
Страница 6: ...Preface iv Sentinel LNG User s Manual...
Страница 12: ...Contents x Sentinel LNG User s Manual...
Страница 26: ...Chapter 1 Features and Capabilities Sentinel LNG User s Manual 14...
Страница 178: ...Chapter 5 Using PanaView 166 Sentinel LNG User s Manual...
Страница 184: ...Chapter 6 MODBUS Communications 172 Sentinel LNG User s Manual...
Страница 202: ...Chapter 7 HART Communications 190 Sentinel LNG User s Manual...
Страница 220: ...Chapter 9 Troubleshooting 208 Sentinel LNG User s Manual...
Страница 222: ...Appendix A Menu Maps 210 Sentinel LNG User s Manual...
Страница 230: ...Appendix A Menu Maps Sentinel LNG User s Manual 218...
Страница 232: ...Appendix B CE Mark Compliance and High Noise Areas 220 Sentinel LNG User s Manual...
Страница 236: ...Appendix C Data Records 224 Sentinel LNG User s Manual...
Страница 240: ...Appendix C Service Record 228 Sentinel LNG User s Manual...
Страница 244: ...Index 232 Sentinel LNG User s Manual...
Страница 246: ...Warranty 234 Sentinel LNG User s Manual no content intended for this page...
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