COVID-19: We work from home. All services and operations work as usual.

Rayleigh Instruments (RI-F300,RI-F400) data logger. MODBUS registers map.


This data is being extracted with help of the Advanced Serial Data Logger (MODBUS RTU,ASCII) or Advanced TCP/IP Data Logger (MODBUS TCP) software only. It may not applicable for other software titles.

MODBUS offsetDescriptionUnitsData type
2Voltage v2n single
4Voltage v3n single
6Average voltage ln single
8Voltage V12 single
10Voltage V23 single
12Voltage V31 single
14Average voltage ll single
16Current I1 single
18Current I2 single
20Current I3 single
22Average current single
24kW1 single
26kW2 single
28kW3 single
30Kva1 single
32Kva2 single
34Kva3 single
36Kvar1 single
38Kvar2 single
40Kvar3 single
42Total kw single
44Total kvaKVAsingle
46Total kvarKVArsingle
48PF1 single
50PF2 single
52PF3 single
54Average pf single
56Frequency single
58Total net kwhkWhsingle
60Total net kvah single
62Total net kvarhkVArhsingle
64Kw max active power single
66Kw min active power single
68Kvar max reactive power single
70Kvar min reactive power single
72Kva max apparent power single
74Max I1 demand single
76Max I2 demand single
78Max I3 demand single
80Max avg demand single
82Run hour single
84Kwh1 (imp) single
86Kwh2 (imp) single
88Kwh3 (imp) single
90Kwh1 (exp) single
92Kwh2 (exp) single
94Kwh3 (exp) single
96Total kwh (imp)kWhsingle
98Total kwh (exp)kWhsingle
100Kvarh1 (imp) single
102Kvarh2 (imp) single
104Kvarh3 (imp) single
106Kvarh1 (exp) single
108Kvarh2 (exp) single
110Kvarh3 (exp) single
112Total kvarh (imp)kVArhsingle
114Total kvarh (exp)kVArhsingle
116Kvah1 single
118Kvah2 single
120Kvah3 single
122Neutral current single
124Thd of 1st phase voltage single
126Thd of 2nd phase voltage single
128Thd of 3rd phase voltage single
130Thd of voltage V12 single
132Thd of voltage V23 single
136Thd of voltage V31 single
138Thd of current I1 single
140Thd of current I2 single
142Thd of current I3 single
684Serial no. (data structure : hex) single
700Phase sequence indication (data structure: integer) 0 clockwise 1 anticlockwise 2 invalid single
702Existing kw max active power single
704Existing kw min active power single
706Existing kvar max reactive powerKVArsingle
708Existing kvar min reactive powerKVArsingle
710Existing kva max apparent powerKVAsingle
712Existing max I1 demand single
714Existing max I2 demand single
716Existing max I3 demand single
718Existing max avg. I demand single

Rayleigh Instruments (RI-D140) data logging
Rayleigh Instruments (RI-D35) data logging
Rayleigh Instruments (RI-F100) data logging
Rayleigh Instruments (RI-F200) data logging
Rayleigh Instruments (RI-F220) data logging
Rayleigh Instruments (RI-F300,RI-F400) data logging

Note: Products and companies mentioned here are used only for definition and identification purposes and can be trademarks and/or registered trademarks of the respective companies.