Kohler MPAC 1000, MPAC 1500 MODBUS registers: read online

Connect Kohler 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 Kohler logger and poll.

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Kohler (MPAC 1000) - MODBUS Mapping

Connection and addressing notes

Protocol: Modbus
Register addressing: 4xxxx Modbus addresses starting at 40001
Map offsets: register number minus 40001
Monitoring data start: 40001
Setup data start: 40022

Registers in the map: 88 (the first 50 are listed below; the browser reader and the data loggers use the complete map). function 3 (holding registers). byte order big-endian. data types: word.

MODBUS offset	Description	Units	Data type	Scale
1	Sourcea line neutral L1 l0	V AC	word	×0.1
2	Sourcea line neutral L2 l0	V AC	word	×0.1
3	Sourcea line neutral L3 l0	V AC	word	×0.1
4	Sourceb line neutral L1 l0	V AC	word	×0.1
5	Sourceb line neutral L2 l0	V AC	word	×0.1
6	Sourceb line neutral L3 l0	V AC	word	×0.1
7	Sourcea line voltage L1 L2	V AC	word	×0.1
8	Sourcea line voltage L2 L3	V AC	word	×0.1
9	Sourcea line voltage L3 L1	V AC	word	×0.1
10	Sourceb line voltage L1 L2	V AC	word	×0.1
11	Sourceb line voltage L2 L3	V AC	word	×0.1
12	Sourceb line voltage L3 L1	V AC	word	×0.1
13	Sourcea frequency	Hz	word	×0.1
14	Sourceb frequency	Hz	word	×0.1
23	Sourcea nominal voltage	V AC	word	×0.1
24	Sourceb nominal voltage	V AC	word	×0.1
25	Sourcea nominal frequency	Hz	word	×0.1
26	Sourceb nominal frequency	Hz	word	×0.1
27	Sourcea number of phases		word
28	Sourceb number of phases		word
29	Rated amperage		word
31	Sourcea engine start time delay (id 0x0001)		word
32	Sourceb engine start time delay (id 0x0002)		word
33	Sourcea ext engine start time delay (id 0x0003)		word
34	Sourceb ext engine start time delay (id 0x0004)		word
35	Sourcea engine cooldown time delay (id 0x0005)		word
36	Sourceb engine cooldown time delay (id 0x0006)		word
37	Preferred to standby time delay (id 0x0007)		word
38	Standby to preferred time delay (id 0x0008)		word
39	Off to preferred time delay (id 0x0009)		word	×0.1
40	Off to standby time delay (id 0x000a)		word	×0.1
41	Acquire standby source (id 0x000b)		word
42	Inphase monitor synch (id 0x000c)		word
44	Sourcea over volt dropout trip point		word
45	Sourcea over volt pickup trip point		word
46	Sourcea under volt pickup trip point		word
47	Sourcea under volt dropout trip point		word
48	Sourcea voltage debounce time	s	word	×0.1
49	Sourceb over volt dropout trip point		word
50	Sourceb over volt pickup trip point		word
51	Sourceb under volt pickup trip point		word
52	Sourceb under volt dropout trip point		word
53	Sourceb voltage debounce time	s	word	×0.1
54	Sourcea over freq dropout trip point		word
55	Sourcea over freq pickup trip point		word
56	Sourcea under freq dropout trip point		word
57	Sourcea under freq pickup trip point		word
58	Sourcea freq dropout time	s	word	×0.1
59	Sourceb over freq dropout trip point		word
60	Sourceb over freq pickup trip point		word

This is not the complete map: 50 of 88 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.

Kohler (MPAC 1500) - MODBUS Maps

Connection and addressing notes

Protocol: Modbus
Register addressing: 4xxxx Modbus addresses starting at 40001
Map offsets: register number minus 40001
Password register: 40040, write only, range 0-32768
Password use: writing register 40042

Registers in the map: 71 (the first 50 are listed below; the browser reader and the data loggers use the complete map). function 3 (holding registers). byte order big-endian. data types: word.

MODBUS offset	Description	Units	Data type	Scale
1	Source N line neutral l1l0	V AC	word	×0.1
2	Source N line neutral L2 l0	V AC	word	×0.1
3	Source N line neutral l3l0	V AC	word	×0.1
4	Source E line neutral L1 l0	V AC	word	×0.1
5	Source E lineneutral l2l0	V AC	word	×0.1
6	Source E line neutral L3 l0	V AC	word	×0.1
7	Source N line voltage L1 L2	V AC	word	×0.1
8	Source N line voltage L2 L3	V AC	word	×0.1
9	Source N line voltage L3 L1	V AC	word	×0.1
10	Source E line voltage L1 L2	V AC	word	×0.1
11	Source E line voltage l2l3	V AC	word	×0.1
12	Source E line voltage L3 L1	V AC	word	×0.1
13	Source N frequency	Hz	word	×0.1
14	Source E frequency	Hz	word	×0.1
15	Current L1	A	word	×0.1
16	Current L2	A	word	×0.1
17	Current L3	A	word	×0.1
18	Closed transition in phase degree delta	deg	word
38	Closed programmed transition override mode		word
40	Synchronous voltage phase angle		word
41	Synchronous voltage differential	0%-5%	word
42	Synchronous frequency differential	0.0Hz.-0.3Hz.	word	×10
43	Service entrance type		word
44	Phase rotation actual		word
45	Phase rotation expected		word
46	Nominal normal voltage	V AC	word	×0.1
47	Nominal emergency voltage	V AC	word	×0.1
48	Nominal normal frequency	Hz	word	×0.1
49	Nominal emergency frequency	Hz	word	×0.1
50	Normal number of phases		word
51	Emergency number of phases		word
52	Rated amperage		word
58	Normal engine start time delay		word
59	Emergency engine start time delay	010 sec	word
60	Normal ext. Engine start time delay		word
61	Emergency ext. Engine start time delay		word
62	Normal engine cooldown		word
63	Emergency engine cooldown		word
64	Standby to preferred		word
65	Preferred to standby		word
66	Off (preferred to standby prog. Transition)		word
67	Off (standby to preferred prog. Transition)		word
68	Fail to acquire preferred		word
69	Fail to acquire standby	13600 sec	word
70	Fail to synchronize		word
71	Fail to synch. Enable		word
74	Active time delay		word
75	Active time delay remaining	s	word	×0.1
76	Active time delay preset	Seconds 10	word
77	Normal over voltage dropout	105%-135% of Nominal	word

This is not the complete map: 50 of 71 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.

Kohler (Power Monitor) - MODBUS Maps

Connection and addressing notes

Protocol: Modbus
Register addressing: 4xxxx Modbus addresses starting at 40001
Map offsets: register number minus 40001
Data types: WORD
Text values: consecutive WORD registers, one character per byte
Text byte order: first character in the LSB

Registers in the map: 50. function 3 (holding registers). byte order big-endian. data types: string, word.

MODBUS offset	Description	Units	Data type	Scale
119	Model No.		string
1	System time		word
2	Day of week		word
3	Month		word
4	Day		word
5	Year		word
6	Week of month		word
7	Voltage l1l2	V	word
8	Voltage l2l3	V	word
9	Voltage l3l1	V	word
10	Frequency	Hz	word	×0.1
11	Voltage l1l0	V	word
12	Voltage l2l0	V	word
13	Voltage l3l0	V	word
14	Alert code	Alert Code	word
15	Analog input #1 percentage	%	word	×0.1
16	Analog input #2 percentage	%	word	×0.1
18	Power supply voltage	V DC	word	×0.1
19	L1 current	A	word
20	L2 current	A	word
21	L3 current	A	word
22	Power factor		word	×0.01
23	Total real power	kW	word
24	Total imaginary power	kvar	word
39	Aux 1 delay time	s	word
40	Aux 2 delay time	s	word
41	Aux 3 delay time	s	word
42	Aux 4 delay time	s	word
43	Aux S delay time	s	word
44	Aux 6 delay time	s	word
45	System voltage	volts, 10514600	word
46	System frequency	Hz, 4862	word
47	Ats rating	A, 03000	word
61	Shutdown #1 code		word
62	Shutdown #1 month		word
63	Shutdown #1 day		word
64	Shutdown #1 year		word
65	Shutdown #2 code		word
66	Shutdown #2 month		word
67	Shutdown #2 day		word
68	Shutdown #2 year		word
69	Shutdown #3 code		word
70	Shutdown #3 month		word
71	Shutdown #3 day		word
72	Shutdown #3 year		word
73	Shutdown #4 code		word
74	Shutdown #4 month		word
75	Shutdown #4 day		word
76	Shutdown #4 year		word
299	Timed run time	min	word

Related MODBUS registers maps

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Kohler MPAC 1000, MPAC 1500 MODBUS registers: read online

Kohler (MPAC 1000) - MODBUS Mapping

Kohler (MPAC 1500) - MODBUS Maps

Kohler (Power Monitor) - MODBUS Maps

Related MODBUS registers maps

MODBUS COM Port Connection

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