KOHLER-SDMO APM303

Kohler-SDMO · Genset panel · APM303

Manufacturer: Kohler-SDMO
Product: Genset panel
Model: APM303
Protocol: Modbus
Package: Engine control (SU2206)
Updated: 2026-05-28
Driver ID: 112

Notes

Genset control panel for engines without J1939.

Default address is '5'
Default speed is 9600 bps

ezeio D0 -> APM303 A-485
ezeio D1 -> APM303 B-485
ezeio C -> APM303 COM-485

**CAUTION**
APM303 scaling is poorly documented, and may change for unknown reasons. Make sure to set the scaling manually, and check it for correctness.

Registers 48

#	Name	Unit
1	Gen V L1-N	`V`
2	Gen V L2-N	`V`
3	Gen V L3-N	`V`
4	Gen V L1-L2	`V`
5	Gen V L1-L3	`V`
6	Gen V L1-L3	`V`
7	Gen A L1	`A`
8	Gen A L2	`A`
9	Gen A L3	`A`
10	Gen kW Total	`kW`
11	Gen kVA Total	`kVA`
12	Gen PF	`pf`
13	Gen kW L1	`kW`
14	Gen kW L2	`kW`
15	Gen kW L3	`kW`
16	Gen kW L1 (Effective)	`kW (E)`
17	Gen kW L2 (Effective)	`kW (E)`
18	Gen kW L3 (Effective)	`kW (E)`
19	Gen PF L1	`pf`
20	Gen PF L2	`pf`
21	Gen PF L3	`pf`
22	Load Character (R/L/C)	`(R/L/C)`
23	RPM	`rpm`
24	Gen Freq	`Hz`
25	Power precision
26	Battery V	`V`
27	BIN
28	BOUT
29	Oil pressure	`psi`
30	Coolant temp	`°C`
31	Fuel level	`%`
32	Unit system	`M/US`
33	D plus	`V`
34	Total active energy	`kWh`
35	Maintenance timer	`h`
36	Start counter
37	Genset serial
38	SW version
39	SW patch version
40	Running hours	`h`
41	Nominal current	`A`
42	Connection type
43	Remote control
44	Status
45	Warnings
46	Errors
47	Signals
48	Common

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