Digital input and output module DAM-5088

DAM-5088 module is a new generation module based on embedded systemIt adopts standard DIN35 rail installation method, which is easy to install on site and flexible to use; it can cope with various on-site applications.DAM-5088 is an industrial-grade digital/switch input and output collector, which can collect 8 channels of digital input and 8 channels of digital output signals; it is suitable for various control systems in industrial sites.The module is equipped with an isolated RS485 interface, which can communicate with a PC or PLC alone, or can be used in a network with multiple 485 modules.

The input and output lines of the microcontroller are the easiest places to introduce interference;In the case of severe interference, all ports need to be optically isolated.This leads to the optocoupler element.Optocouplers are used to isolate input and output, mainly to isolate

away from the incoming signal.In the MCU application system, there are often some long-distance switching signals that need to be transmitted to the controller. If these signals are directly connected to the I/O of the MCU, the following problems will exist:

1. The signal does not match the input signal of the single-chip microcomputer. The input signal may be AC ​​signal, high voltage signal, button and other contactssignal;

2. Longer connection lines are easy to introduce interference, lightning strikes, induced electricity, etc. The signal at this time requires optocoupler forIsolation, access to the single-chip system.Relay is an automatic switching element with isolation function. It is widely used in remote control, telemetry, communication, automatic control, mechatronics and power electronic equipment. It is one of the most important control elements.This section is about two experiments on optocouplers and relays.

In all kinds of automatic control equipment, there is a problem of interconnection between the low pressure automatic control middle circuit and the high pressure middle gas circuit, on the one hand, the control signal of the low-voltage electronic circuit should be able to control the executive elements of the high-voltage electrical circuit, such as

motors, electromagnets, lamps, etc.; on the other hand, it is necessary to provide good electrical isolation for the electrical circuits of electronic circuits,In order to protect the safety of electronic circuits and people, electromagnetic relays can complete this bridge role.

Features:p>

ARM embedded real-time operating systemspan>

Contact Capacity: 250 V 3A

Wide power supply range: DC 9～30V

Address/Baud Rate/CheckBit/Stop Bit Configurable

±15KVESD protection

Isolation withstand voltage: DC 2500 V

Working temperature range: - 40℃～80℃

Industrial grade ABS flame retardant housing, standardDI N35 rail

Modbus protocol is a widely usedA common communication protocol in the field of industrial control.Through this protocol, the controllers can communicate with each other or with other devices via the network.

Chengkong Electronics DI, DO acquisition moduleIt supports the industrial standard Modbus RTU protocol. Modbus RTU protocol is the most commonly used one in serial communication among various Modbus protocols. After the module is configured as Modbus RTU protocol through corresponding commands, it can work in Modbus slave state.It can communicate with PLCs, configuration screens and computers of various brands.