DFR0233

DFR0233 Datasheet

RS485 Sensor Node V1.0 SKU:DFR0233

Part	Datasheet
DFR0233	DFR0233 (pdf)

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RS485 Sensor Node V1.0 SKU:DFR0233 Contents • 1 Introduction • 2 Application • 3 Specification • 4 Pin Out More details • 5 Product Directive • 6 Connecting Diagram • 7 Sample Code Introduction This RS-485 Sensor Node module can be used in various applications such as intelligent agriculture, environment monitoring,home automation...etc. It is a Internet of things device. This RS-485 Sensor node provides 6 channel analog input and 1 SHT1x Humidity & Temperature digital input. The RS485 protocol supports up to 254 nodes at 1200m distance between each node. This allows a wide range cover for monitoring the environment. A screw free design allows easy connection of cables without scarfice reliable & stable. RS-485 standard is used effectively over long distances and in electrically noisy environments. Multiple receivers may be connected to such a network in a linear, multi-drop configuration. These characteristics make such networks useful in industrial environments and similar applications.RS485 enables the configuration of inexpensive local networks and multidrop communications links. It offers data transmission speeds of 35 Mbit/s up to 10 m and 100 kbit/s at 1200 m. RS-485 bus is the most popular communication method in industry. Compared with RS-232 bus, it is able to transfer information in further distance with lower cost. Establishing an “Internet of Things” by integrating RS-485 with Ethernet, which is the widely available in the world, in the hope that this method will coordinate all devices with low cost and high efficiency. Application • Intelligent agriculture • Public safety • Environment monitoring • Individual health • Home automation Specification • MCU:Atmega8 • Input Voltage:12V • Baud rate:9600 • Slave address 0x01 - 0x7F • RS-485 long distance,reliable & stable conmunication • Multiple connection（up to 127 • Press to connect cables, quick and easy • 1 SHT1x Humidity and Temperature Sensor interface • 6 channel analog sensor interface • 8 small switches for setting slave address directly • Humidity:0-100%RH ±4.5%RH • Temperature:-40-128.8 • Size:82x50mm Pin Out More details Details for slave address setting Auto or manual operation:This bit is for setting the addresses of slave devices by software or hardware. • A set slave address via software, when it is at the A side, the Bits for setting slave address will be invalid. • M set slave address via hardware, when it is at the M side means you can set the slave address via the 7 small switches.Success to set after 30 seconds. Bits for setting address of slave:0x01~0x7F,just be effective to M side Product Directive • Check all the current real-time data directive--0x21 Command: Word Head Device Address Frame Length Command Word Checksum 0x55 0xAA 0x11 0x00 0x21 This command will check all data of current device.There are 10 register data totally.A register data is 16 digit,consisting of 8 high digit and 8 low digit. Return the following: Content Order Register Illustration Register Data Register Range manually/automatically set address status 0x00 0x01 1 for automatic 0 for manual Humidity Measurement 0x00 0x02 to 100.0% RH Temperature Measurement 0x00 0x03 SHT1X error status 0x00 0x04 1 for error 0 for normal Analog Measurement 1 0x00 0x05 0 to 1023 Analog Measurement 2 0x00 0x06

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RS485 Sensor Node V1.0 SKU:DFR0233

Contents
• 1 Introduction
• 2 Application
• 3 Specification
• 4 Pin Out

More details
• 5 Product Directive
• 6 Connecting Diagram
• 7 Sample Code

Introduction

This RS-485 Sensor Node module can be used in various applications such as intelligent agriculture, environment monitoring,home automation...etc. It is a Internet of things device. This RS-485 Sensor node provides 6 channel analog input and 1 SHT1x Humidity & Temperature digital input. The RS485 protocol supports up to 254 nodes at 1200m distance between each node. This allows a wide range cover for monitoring the environment. A screw free design allows easy connection of cables without scarfice reliable & stable. RS-485 standard is used effectively over long distances and in electrically noisy environments. Multiple receivers may be connected to such a network in a linear, multi-drop configuration. These characteristics make such networks useful in industrial environments and similar applications.RS485 enables the configuration of inexpensive local networks and multidrop communications links. It offers data transmission speeds of 35 Mbit/s up to 10 m and 100 kbit/s at 1200 m.

RS-485 bus is the most popular communication method in industry. Compared with RS-232 bus, it is able to transfer information in further distance with lower cost. Establishing an “Internet of Things” by integrating RS-485 with Ethernet, which is the widely available in the world, in the hope that this method will coordinate all devices with low cost and high efficiency.

Application
• Intelligent agriculture
• Public safety
• Environment monitoring
• Individual health
• Home automation

Specification
• MCU:Atmega8
• Input Voltage:12V
• Baud rate:9600
• Slave address 0x01 - 0x7F
• RS-485 long distance,reliable & stable conmunication
• Multiple connection（up to 127
• Press to connect cables, quick and easy
• 1 SHT1x Humidity and Temperature Sensor interface
• 6 channel analog sensor interface
• 8 small switches for setting slave address directly
• Humidity:0-100%RH ±4.5%RH
• Temperature:-40-128.8
• Size:82x50mm

Pin Out

More details

Details for slave address setting Auto or manual operation:This bit is for setting the addresses of slave devices by software or hardware.
• A set slave address via software, when it is at the A side, the Bits for setting slave address will be invalid.
• M set slave address via hardware, when it is at the M side means you can set the slave address via the 7 small switches.Success to set after 30 seconds. Bits for setting address of slave:0x01~0x7F,just be effective to M side

Product Directive
• Check all the current real-time data directive--0x21

Command:

Word Head Device Address Frame Length Command Word Checksum
0x55 0xAA
0x11
0x00
0x21

This command will check all data of current device.There are 10 register data totally.A register data is 16 digit,consisting of 8 high digit and 8 low digit.

Return the following:

Content Order

Register Illustration

Register Data

Register Range
manually/automatically set address status 0x00 0x01 1 for automatic 0 for manual

Humidity Measurement
0x00 0x02
to 100.0% RH

Temperature Measurement
0x00 0x03

SHT1X error status
0x00 0x04 1 for error 0 for normal

Analog Measurement 1
0x00 0x05
0 to 1023

Analog Measurement 2
0x00 0x06

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Datasheet ID: DFR0233 508681