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General Architecture of the Main Control System for Woodworking Engraving Machines

Views: 66     Author: Site Editor     Publish Time: 2024-06-06      Origin: Site

General Architecture of the Main Control System for Woodworking Engraving Machines

The general architecture of the main control system for woodworking engraving machines is similar to conventional systems. It primarily includes: a controller based on the CMC chip, axis control section, human-machine interaction section, point input/output section, and IO expansion section. The block diagram of the main control system architecture is shown in Figure 1. The main controller is designed using the CMC chip, which is developed by Ningbo Zhongkong Microelectronics Co., Ltd. This chip is an on-chip PLC chip that integrates logic control functions compliant with the IEC61131-3 standard, as well as motion control functions compliant with the PLCopen standard. It offers a rich set of motion control function blocks and supports G-code programming for machine tool control. It also includes built-in ModBus and CANopen protocol stacks, allowing for quick adaptation to various human-machine interface devices and expansion devices.

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Axis Control Section

The CMC chip supports 4-axis and 3-linkage motion control functions, capable of performing arc interpolation, spatial linear interpolation, and point interpolation. It supports AB phase signal detection for each axis encoder, with a maximum pulse frequency of up to 4MHz, which can meet the requirements of most servo and stepper motor applications. This solution provides 4-axis pulse + direction output. Additionally, it controls the cutting axis speed through 0-10V analog output.

Human-Machine Interaction Section

This section is primarily used for selecting processing files and configuring system parameters for the woodworking engraving machine. The CMC chip has an integrated ModBus protocol stack, supporting the majority of HMI screens through ModBus RTU/TCP communication. Additionally, the CMC chip provides an Ethernet interface, allowing direct programming of logic using the configuration development software ConfDes. The software supports languages such as ST ladder diagram and SFC, enhancing the flexibility of on-site modifications.

Point Input/Output Section

This section mainly provides common point control functions, capable of outputting alarm signals, LED indicator signals, and receiving signals from limit switches and emergency stop buttons. The CMC chip pins support function multiplexing, with up to 84 GPIO inputs and outputs.

IO Expansion Section

To accommodate more point control requirements of woodworking engraving machines, this solution provides a point expansion interface based on the CANopen bus. CANopen function blocks can be directly called to meet IO expansion requirements.


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