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.
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.
Find out more about the relay board
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.
Find out more about the energy meter
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
Find out more about the digital counter input module