- Frame format
- Devices / Masters
- Devices / Slaves
- Temperature and humidity sensor
- Relay board
- Energy meter
- Temperature sensor (DS18B20)
- Digital counter
- PBX systems
- Upload Arduino code
Devices / Slaves
On a pair of Modbus wires, slaves can be addressed from 1 to 247. Each slave replies to Modbus Function Codes from the Master. Most slaves can measure data or interact with the environment, which is stored in registers. You can read/write registers with Function Codes.
Temperature and humidity sensor|
This is a high precision temperature and humidity sensor module. It has a high precision probe that guarantees the products with excellent measurement performance. Thanks to this, it is ideal for real-time monitoring of multiple site environment.
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With this 4-channel relay interface board you can control various appliances and other equipment with large current. It allows you to control each channel with 6 commands including open, close, momentary, self-locking, interlocking and delay.
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This unit measures and displays various important electrical parameters and provide a communication port for remote reading and monitoring. Bi-directional energy measurement makes the unit a good choice for solar PV energy metering.
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Temperature sensor (DS18B20)|
This small module has a high precision temperature sensor that produces the measured values to two decimal places using the Modbus RTU protocol. It also has an option to shift the temperature value.
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This is an electronic unit with four digital counter imputs. It has a Modbus RTU communication interface to provide a simple way for integrating digital signals to supervisory system. The input signals are isolated from the power thus protecting the electrical instruments by eliminating ground loop effects.
Find out more about the digital counter input module