Modbus Setup

Last Updated: Sep. 5, 2024

Table of Contents

• Modbus ID Range
• MBControl Default
• EKO Pyranometer MS-80SH
• MBControl Solar Irradiance Sensor MBMet-500-AB
• MBControl PV Module Temperature Sensor MBMet-830
• MBControl Wind Speed Sensor MBMet-100B-B
• PUSR Default
• GA Default
• CWT Temperature Sensors
• INFWIN PYR20-AAC002
• MRT Default
• Renke Default
• Renke Pyranometer RS-TBQ-N01-AL
• Renke Wind Direction
• Renke Wind Speed
• Renke Ambient Temperature
• Renke Weather Station
• Renke 4-20mA RS485
• RS485 Termination

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Modbus ID Range

Total 1 ~ 247 (0x01 ~ 0xF7)

• [01 ~ 30 (0x01 ~ 0x1E)] PV Inverter
• [31 ~ 60 (0x1F ~ 0x3C] PV Temperature
• [61 (0x3D)] GHI : Renke Pyranometer RS-TBQ-N01-AL
• [62 (0x3E)] GHI : EKO Pyranometer MS-80SH
• [63 (0x3F)] GHI : INFWIN PYR20-AAC002
• [71 ~ 80 (0x47 ~ 0x50)] POA
• [73 (0x49)] POA : INFWIN PYR20-AAC002
• [90 ~ 100 (0x5A ~ 0x64)] Structure Sensor
• [200 (0xC8)] Wind Direction
• [201 (0xC9)] Wind Speed
• [202 (0xCA)] Ambient Temperature

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MBControl Default

Wire (LAPP 1032100)

	White	Vcc
	Brown	GND
	Green	A+
	Yellow  B-

Modbus Parameters

Use Function 16 (0x10) (Write Multiple Registers) to Write and Save parameters. Once rebooting it takes effect.

Address 100 (0x0064) [U16] Modbus ID 1 ~ 247
Address 101 (0x0065) [U16] Baud rate: 0=4800, 1=9600, 2=19200
Address 102 (0x0066) [U16] Parity: 0=None, 1=Odd, 2=Even
Address 103 (0x0067) [U16] Stop bits: 1 (Fix)
Address 104 (0x0068) [U16] Temperature Unit: 0=°C, 1=°K, 2=°F
Address 105 (0x0069) [U16] Save Parameters: 1, Write Only

• Example: ID=71(0x47), Baud=9600, No Parity, 1 Stop bit, °C

  Send: 06 10 0064 0006 0C 0047 0001 0000 0001 0000 0001 [CRC]
  Receive: 06 10 00 64 00 06 [CRC]

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EKO Pyranometer MS-80SH

GHI measurement. Set the Modbus ID and RS485 parameters in Hibi software supplied by EKO.

• Address 2, 3 : [F32] Adjusted solar radiation intensity (W/m²)
• Example: 3.6 W/m² (0x4064959C = 3.57163)

  Send: 3E 03 0002 0002 [CRC]
  Receive: 3E 03 04 40 64 95 9C [CRC]

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MBControl Solar Irradiance Sensor MBMet-500-AB

POA measurement.

• Address 0 : [U16] Solar irradiation (W/m²)
• Example: 7 W/m² (0x0007 = 7)

  Send: 47 03 0000 0001 [CRC]
  Receive: 47 03 02 00 07 [CRC]

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MBControl PV Module Temperature Sensor MBMet-830

PV Module Temperature measurement.

• Address 0 : [S16] 10x Temperature (°C)
• Example: 24.9°C (0x00F9 = 249)

  Send: 1F 03 0000 0001 [CRC]
  Receive: 1F 03 02 00 F9 [CRC]

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MBControl Wind Speed Sensor MBMet-100B-B

Wind Speed measurement.

• Address 0 : [U16] 10x Wind Speed (m/s)
• Example: 3.2 m/s (0x0020 = 32)

  Send: 01 03 0000 0001 [CRC]
  Receive: 01 03 02 00 20 [CRC]

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PUSR Default

3.81mm pitch 5P

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GA Default

3.50mm pitch 5P

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CWT Temperature Sensors

CWT-TH04S-M (Ambient Temperatrure) / CWT-T02S (PV-module Temperature)

DC Power: 12V (5 ~ 30V dc)

Wire

	Brown	Vcc
	Black	GND
	Yellow	A+
	Blue	B-

Modbus-RTU

  Default parameter 4800bps, 1S, NP, 8bits 
  Default address 0x01

Baud Rate

• Address: 0x07D1
• Function: 6 / 3
• Content:

 baud rate: 
	    0 – 2400bps
	    1 – 4800bps (*)
	    2 – 9600 bps

Modbus ID

• Address: 0x07D0
• Function: 3 / 6
• Example: ID = 0x1F(31)(Tpv), 0xCA(202)(Ta)

Use CWT-THXXS Config Tool for baud and ID

CWT Temperature measurement

• Address 1 (0x0001) : [S16] 10x Temperature
• Example: PV Temperature = 28.0°C (0x118 = 280)

  Send: 1F 03 0001 0001 [CRC] 
  Receive: 1F 03 02 01 18 [CRC]

• Example: Ambient Temperature = 27.5 (0x0113 = 275)

  Send: CA 03 0001 0001 [CRC] 
  Receive: CA 03 02 01 13 [CRC]

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INFWIN PYR20-AAC002

DC Power: 12V (3.9 ~ 30V dc)

Wire

	Red	Vcc
	Black	GND
	Yellow	A+
	White   B-

Modbus-RTU

  Default parameter 9600bps, 1S, NP, 8bits 
  Default address 0x01

Modbus ID

• Address: 0x0200
• Function: 3 / 6 / 16
• Example: ID = 0x3F(63) (GHI), 0x49(73) (POA)

  Send: 01 06 0200 003F [CRC]
  Receive: 01 06 02 00 00 3F [CRC] 

Take effect once re-power on

GHI measurement.

• Address 0 : [U16] Solar radiation intensity (W/m²)
• Example: 16 W/m² (0x0010 = 16)

  Send: 3F 03 0000 0001 [CRC]
  Receive: 3F 03 02 00 10 [CRC]

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MRT Default

Wire

	Red             Vcc
	Black           GND
	Green(Yellow)	A+
	White           B-

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Renke Default

3 Way Cable:

https://youtu.be/ZsB1V8zTqgs?t=33

DC Power: 12V (10 ~ 30V dc)

Wire

	Brown	Vcc
	Black	GND
	Yellow	A+
	Blue    B-

Modbus-RTU

  Default speed   4800bps
  Default address 0x01

Default Command

Version Number

• Address: 0x0009
• Function: 0x03
• Example: V2.04

  Send: 01 03 0009 0001 [CRC]
  Receive: 01 03 02 02 04 [CRC]

Modbus ID

• Address: 0x07D0
• Function: 0x06 / 0x03
• Example: ID = 0x00C8

  Send: C8 06 07D0 00C8 [CRC]
  Receive: C8 06 07 D0 00 C8 [CRC] // Echo

Query Modbus ID (0xFF)

• Address: 0x07D0
• Function: 0x03
• Example: ID = 0x003D

  Send: FF 03 07D0 0001 [CRC]
  Receive: 3D 03 02 00 3D [CRC]

Baud Rate

• Address: 0x07D1
• Function: 0x06 / 0x03
• Content:

 baud rate: 
	    0 – 2400bps
	    1 – 4800bps
	    2 – 9600 bps
	    3 – 19200bps 

• Example: Baud = 9600 bps

  Send: C8 06 07D1 0002 [CRC]
  Receive: C8 06 07 D1 00 02 [CRC] // Echo

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Renke Pyranometer RS-TBQ-N01-AL

GHI measurement.

• Address 0 : [U16] Solar radiation intensity (W/m²)
• Example: 16 W/m² (0x0010 = 16)

  Send: 3D 03 0000 0001 [CRC]
  Receive: 3D 03 02 00 10 [CRC]

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Renke Wind Direction

• Address 0 : [U16] Wind direction 0 ~ 7
• Address 1 : [U16] Wind direction 0 ~ 360°

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Renke Wind Speed

• Address 0 : [U16] 10x Wind Speed (m/s)
• Example: Wind Speed = 2.9 m/s (0x1D = 29)

  Send: C9 03 0000 0001 [CRC]
  Receive: C9 03 02 00 1D [CRC]

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Renke Ambient Temperature

• Address 505 (0x01F9) : [S16] 10x Ambient Temperature
• Example: Ambient Temperature = 22.4°C (0xE0 = 224)

  Send: CA 03 01 F9 00 01 [CRC] 
  Receive: CA 03 02 00 E0 [CRC]

• Example: Ambient Temperature = -10.1°C (0xFF9B = -101)

  Send: CA 03 01 F9 00 01 [CRC] 
  Receive: CA 03 02 FF 9B [CRC]

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Renke Weather Station

Wind Speed

• Modbus ID: 01 (*)
• Baud: 4800 (*)

Wind Direction

• Modbus ID: 02 (*)
• Baud: 4800 (*)

Base Station

• Modbus ID: 01 --> 202 (0xCA)
• Baud: 4800 --> 9600

Address Map

• 500 (0x1F4) : [U16] 10x Wind Speed
• 502 (0x1F6) : [U16] Wind Direction (0~7)
• 503 (0x1F7) : [U16] Wind Direction (0~360°)
• 504 (0x1F8) : [U16] 10x Humidity
• 505 (0x1F9) : [S16] 10x Ambient Temperature (°C)

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Renke 4-20mA RS485

• I/O : 4~20mA / 655~3276 (12bit)
• Address 00 : IN0
• Address 01 : IN1
• Example: Read IN0 (0x78A = 1930)

  Send: 5A 03 00 00 00 01 [CRC] 
  Receive: 5A 03 02 07 8A [CRC] 

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RS485 Termination

TI Application

PUSR Function

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