Controller support RS-485 Modbus RTU:
Data – 8bit; Stop bit – 1; None parity;
Baud rate: 9600, 19200(Default), 38400, 115200; Device: 1-127 (Default 100)
Supported functions: 03 Read Holding Registers, 06 Preset Single Register, 16 (10 Hex) Preset Multiple Registers

Registers

Address	Register	Data Type	Range	Default Value	Data Description
0x01	Device ID	RO	0-65535	0xc100
0x02	Software version	RO	0-65535
0x03	Control	RW			Bits 1:0 MODE[1:0]: Turbine mode
					- 00: stop
					- 01: speed 1
					- 10: speed 2
					- 11: (speed 1 + speed 2)/2
0x04	Status	RO			Bit 0 RUN: Turbine running
					Bit 1 RDY: Actual speed > Ready speed
					Bit 2 TSR: Target speed reached
					Bit 7 AERR: Any error
					Bit 8 CERR: Communication error
					Bit 9 TOUT: Timeout error
0x05	Actual speed	RO	0-65535 RPM		Bits [15:0] ASPD: Actual speed
0x06	Actual pressure	RO	0-10000 Bar*1000		Bits [15:0] APR: Actual pressure
0x07	Pressure set point	RO	0-10000 Bar*1000		Bits [15:0] PSP: Pressure set point
0x08	Speed 1	RW Backup	0-60000 RPM	30000 RPM	Bits [15:0] SPD1: Speed 1
0x09	Speed 2	RW Backup	0-60000 RPM	40000 RPM	Bits [15:0] SPD2: Speed 2
0x0a	Speed tolerance	RW Backup	1-30%	10%	Bits [15:0] SPDT: Ready speed = ASPD*(100-SPDT)/100
0x0b	PID Kp	RW Backup	0-65535	2500	Bits [15:0] PIDKP: PID Kp
0x0c	PID Ki	RW Backup	0-65535	400	Bits [15:0] PIDKP: PID Ki
0x0d	PID Kd	RW Backup	0-65535	3500	Bits [15:0] PIDKP: PID Kd
0xf0	Baud rate	RW	0-65535	0	Bits [15:0] BAUD: Baud rate
					- 0: 9600
					- 1: 19200
					- 2: 38400
					- 3: 115200
0xf1	Device Address	RW Backup	0-247	115	Bits [16:0] DEVADDR: Device Address
0xf1	Device Address	RW Backup	0-247	115	Device Address - 0-247

RO - read only memory, RW - read-write memory, Backup - battery powered memory