Taidacent Modbus RTU 485 Serial to Digital RS232 Serial Controlled Relay Smart Home IO Acquisition RS232 Relay Control Board
Modbus protocol is a universal language applied to electronic controllers. Through this protocol, the controllers can communicate with each other and between the controller and other devices. With the development of IoT technology, it has become a general industry standard. With it, control equipment produced by different manufacturers can be connected into an industrial network for centralized monitoring.
BSM series ModbusRTU serial I / O module effectively solves the connection between the network layer and the device layer. Through this product, unified monitoring and management of equipment distributed in the factory can be realized, and I / O expansion of field equipment can also be realized.
The BSM series ModbusRTU serial I / O module has one RS232 and one RS485 communication interface port, and the two communication ports can be used simultaneously. When using the RS232 interface, it can only form an 11 network with the master station (due to the RS232 control of the master hardware interface). When using the RS485 bus, it can form a 1: 1 or 1: N network. That is, one Modbus master device is connected to one or more Modbus slave devices at the same time (each slave device must use a different station number).
Appearance and installation
This product has input and output status indicators and serial transceiver status indicators, which can intuitively display the current working status of the system. This module can be directly installed on a 35mm standard rail, or it can be fixed on the electrical installation board with screws, which is convenient for system debugging and maintenance.
Instructions for use
Power & Power
This product adopts DC wide voltage power supply. The power supply voltage range is DC9V ~ 48V. It has the function of reverse power protection. When the positive and negative poles of the power are reversed, the product does not work.
In terms of power consumption, when all the input and output signals of the module are working, the maximum power consumption is 3 watts. When the module is in standby, the power consumption is 0.5 watts.
The trigger level of the input signal can be switched via the S / s terminal. When S / S is connected to high level, the input trigger signal is active low.
The output port adopts the relay dry contact direct output method, and its contact capacity is 5A. Each output port contains a normally open terminal, a normally closed terminal and a common terminal.
The communication interface of this product is divided into RS232 and RS485. The communication distance of the RS232 communication method cannot theoretically exceed 15 meters, and can only be used as a communication connection established between the master device and a single slave device. The communication distance of RS485 communication method can theoretically reach 1000 meters, but affected by many factors such as the field environment and communication cables, the communication distance will be reduced. RS485 communication can realize a communication connection between a master device and multiple slave devices.
The default communication parameters of the module are:
Note: The communication parameters of the module can be modified by the user based on the actual situation.