Lifasa MCA PLUS II MODBUS registers: read online

Connect Lifasa to the computer through a USB-to-serial or RS485 adapter and read its registers in your browser: click "Read register values online" under the model (Chrome or Edge, nothing to install). The tables below list the MODBUS offset, unit, data type and scale of every register shown. For logging 24/7 into a database, CSV files or Excel, use the Advanced Serial Data Logger (for MODBUS RTU) or Advanced TCP/IP Data Logger (for MODBUS TCP): they poll the complete map of every model on this page and provide continuous Lifasa modbus logging and log.

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Lifasa (MCA PLUS II) - MODBUS Registers

Connection and addressing notes

Protocol: Modbus
Address format: hexadecimal
Function codes: 03 read holding registers, 04 read input registers
Write example: slave address 0x0A (10) with function 0x05

Registers in the map: 133 (the first 50 are listed below; the browser reader and the data loggers use the complete map). function 4 (input registers). byte order big-endian. data types: dword.

MODBUS offset	Description	Units	Data type	Scale
0	L1 phase voltage	V	dword	×0.1
2	L1 current	A	dword	×0.001
4	L1 active power	W	dword
6	L1 inductive power	var	dword
8	L1 capacitive power	var	dword
10	L1 apparent power	VA	dword
12	L1 power factor		dword	×0.01
14	Cos L1		dword	×0.01
16	L2 phase voltage	V	dword	×0.1
18	L2 current	A	dword	×0.001
20	L2 active power	W	dword
22	L2 inductive power	var	dword
24	L2 capacitive power	var	dword
26	L2 apparent power	VA	dword
28	L2 power factor		dword	×0.01
30	Cos L2		dword	×0.01
32	L3 phase voltage	V	dword	×0.1
34	L3 current	A	dword	×0.001
36	L3 active power	W	dword
38	L3 inductive power	var	dword
40	L3 capacitive power	var	dword
42	L3 apparent power	VA	dword
44	L3 power factor		dword	×0.01
46	Cos L3		dword	×0.01
48	Active three-phase power	W	dword
50	Inductive three-phase power	var	dword
52	Capacitive three-phase power	var	dword
54	Apparent three-phase power	VA	dword
56	Three-phase power factor		dword	×0.01
58	Three-phase cos		dword	×0.01
60	L1 frequency	Hz	dword	×0.01
62	L1-L2 voltage	V	dword	×0.1
64	L2-L3 voltage	V	dword	×0.1
66	L3-L1 voltage	V	dword	×0.1
68	Neutral current N	A	dword	×0.001
70	L1 voltage % THD	%	dword	×0.1
72	L2 voltage % THD	%	dword	×0.1
74	L3 voltage % THD	%	dword	×0.1
76	L1 current % THD	%	dword	×0.1
78	L2 current % THD	%	dword	×0.1
80	L3 current % THD	%	dword	×0.1
82	Maximum demand kW III	W	dword
84	Maximum demand kVA III	VA	dword
86	Maximum demand I AVG	A	dword	×0.001
88	Maximum demand I L1	A	dword	×0.001
90	Maximum demand I L2	A	dword	×0.001
92	Maximum demand I L3	A	dword	×0.001
512	Maximum demand kvarL III	kvarL	dword
514	Maximum demand kvarC III	kvarC	dword
94	Consumed active energy kW)		dword

This is not the complete map: 50 of 133 registers are listed above. Click "Read register values online" to read any register of your device in the browser, or download the program to log the complete map.

Lifasa (Master Control Var Fast) - MODBUS Registers Map

Connection and addressing notes

Protocol: Modbus
Address format: hexadecimal
Function code: 04 read input registers

Registers in the map: 98 (the first 50 are listed below; the browser reader and the data loggers use the complete map). function 4 (input registers). byte order big-endian. data types: dword.

MODBUS offset	Description	Units	Data type	Scale
0	L1 phase voltage	V	dword	×0.01
2	L1 current	A	dword	×0.001
4	L1 active power	W	dword
6	L1 inductive reactive power	varL	dword
8	L1 capacitive reactive power	varC	dword
10	L1 reactive power	var	dword
12	L1 apparent power	VA	dword
14	L1 reactive power consumed	var	dword
16	L1 reactive power generated	var	dword
18	L1 power factor		dword
20	L1 cos		dword
22	L1 kW sign		dword
24	L1 kvar sign		dword
26	L2 phase voltage	V	dword	×0.01
28	L2 current	A	dword	×0.001
30	L2 active power	W	dword
32	L2 inductive reactive power	varL	dword
34	L2 capacitive reactive power	varC	dword
36	L2 reactive power	var	dword
38	L2 apparent power	VA	dword
40	L2 reactive power consumed	var	dword
42	L2 reactive power generated	var	dword
44	L2 power factor		dword
46	L2 cos		dword
48	L2 kW sign		dword
50	L2 kvar sign		dword
52	L3 phase voltage	V	dword	×0.01
54	L3 current	A	dword	×0.001
56	L3 active power	W	dword
58	L3 inductive reactive power	varL	dword
60	L3 capacitive reactive power	varC	dword
62	L3 reactive power	var	dword
64	L3 apparent power	VA	dword
66	L3 reactive power consumed	var	dword
68	L3 reactive power generated	var	dword
70	L3 power factor		dword
72	L3 cos		dword
74	L3 kW sign		dword
76	L3 kvar sign		dword
78	Three-phase voltage	V	dword	×0.01
80	Three-phase current	A	dword	×0.001
82	Three-phase active power	W	dword
84	Three-phase inductive power	varL	dword
86	Three-phase capacitive power	varC	dword
88	Three-phase reactive power	var	dword
90	Three-phase apparent power	VA	dword
92	Three-phase reactive power consumed	var	dword
94	Three-phase reactive power generated	var	dword
96	Three-phase power factor		dword
98	Three-phase cos		dword

This is not the complete map: 50 of 98 registers are listed above. Click "Read register values online" to read any register of your device in the browser, or download the program to log the complete map.

Lifasa (Master Control Var) - MODBUS Registers

Connection and addressing notes

Protocol: Modbus
Address format: hexadecimal
Function code: 04 read input registers

Registers in the map: 98 (the first 50 are listed below; the browser reader and the data loggers use the complete map). function 4 (input registers). byte order big-endian. data types: dword.

MODBUS offset	Description	Units	Data type	Scale
0	L1 phase voltage	V	dword	×0.01
2	L1 current	A	dword	×0.001
4	L1 active power	W	dword
6	L1 inductive reactive power	varL	dword
8	L1 capacitive reactive power	varC	dword
10	L1 reactive power	var	dword
12	L1 apparent power	VA	dword
14	L1 reactive power consumed	var	dword
16	L1 reactive power generated	var	dword
18	L1 power factor		dword
20	L1 cos		dword
22	L1 kW sign		dword
24	L1 kvar sign		dword
26	L2 phase voltage	V	dword	×0.01
28	L2 current	A	dword	×0.001
30	L2 active power	W	dword
32	L2 inductive reactive power	varL	dword
34	L2 capacitive reactive power	varC	dword
36	L2 reactive power	var	dword
38	L2 apparent power	VA	dword
40	L2 reactive power consumed	var	dword
42	L2 reactive power generated	var	dword
44	L2 power factor		dword
46	L2 cos		dword
48	L2 kW sign		dword
50	L2 kvar sign		dword
52	L3 phase voltage	V	dword	×0.01
54	L3 current	A	dword	×0.001
56	L3 active power	W	dword
58	L3 inductive reactive power	varL	dword
60	L3 capacitive reactive power	varC	dword
62	L3 reactive power	var	dword
64	L3 apparent power	VA	dword
66	L3 reactive power consumed	var	dword
68	L3 reactive power generated	var	dword
70	L3 power factor		dword
72	L3 cos		dword
74	L3 kW sign		dword
76	L3 kvar sign		dword
78	Three-phase voltage	V	dword	×0.01
80	Three-phase current	A	dword	×0.001
82	Three-phase active power	W	dword
84	Three-phase inductive power	varL	dword
86	Three-phase capacitive power	varC	dword
88	Three-phase reactive power	var	dword
90	Three-phase apparent power	VA	dword
92	Three-phase reactive power consumed	var	dword
94	Three-phase reactive power generated	var	dword
96	Three-phase power factor		dword
98	Three-phase cos		dword

Related MODBUS registers maps

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Lifasa MCA PLUS II MODBUS registers: read online