At 7:30 AM, the SMT line powers on, and the work order corresponding to today's SOP automatically appears on the workstation screen. The operator glances at it to know which component to load first, what torque setting to apply, and which items require first-article inspection. During line changeovers, there is no need to carry paper documents around the workshop; the line supervisor simply taps a button on their mobile phone to synchronize the switch of work instructions for the entire line. While these actions appear simple, they are supported by the ESOP system architecture. Many new users of electronic work instructions feel overwhelmed when hearing the term "architecture," but breaking it down reveals three distinct roles performing their respective tasks.
1. Understanding the Three-Layer Architecture
The ESOP system architecture consists of three layers: server, client, and display terminal. Each layer has a specific function. Data flows from the server to the terminal, while operation commands originate from the client. A common misconception is that the terminal acts merely as a monitor. In reality, it can cache files locally, allowing operators to view stored ESOPs and videos even during network outages. This capability ensures that line changeovers can proceed on standalone terminals without internet connectivity, representing a practical design feature within the ESOP system architecture.
2. Selecting Deployment Methods Based on Workshop Conditions
ESOP system architecture deployment adapts to various environments. Local area networks (LAN) can utilize WiFi or wired connections. Cloud deployment supports platforms such as Alibaba Cloud, and remote connections are possible via 5G IoT cards. For groups with multiple factories, multi-server deployment is feasible. The database supports SQL Server, MySQL, Oracle, and Access. The system operates on a B/S architecture and supports single-machine, LAN, and cloud configurations. Suppose a hypothetical electronics factory has two workshops, one on the second floor and another on the fifth floor. After connecting the internal network, the server is placed in the machine room, while terminals connect via WiFi. The management interface is accessible on office PCs and mobile phones. Security features include hardware and software encryption, log auditing, MAC address binding, separation of database and web services, and automatic backups. These are built-in architectural components requiring no additional configuration.
3. Four-Column Terminal Interface for Immediate Usability
The display terminal interface is divided into four columns: an instant message column for scrolling notifications, a menu column containing options for SOPs, videos, line changeovers, alarms, exit, and document management, a personnel information column displaying name, employee ID, and job title, and an equipment information column showing device name, model, and fixed asset number. The screen supports multiple functions simultaneously, allowing SOP documents and process videos to be displayed together. It supports layouts including 1/4 screen, full screen, 4/6 split screen, and 5/5 split screen. Over 40 file formats are supported, including images, Word, Excel, PPT, PDF, audio, video, CAD/ProE/SolidWorks drawings, and 3D models, all of which can be played directly. Suppose a line changeover occurs on an SMT line. An experienced operator can distribute the ESOP within 30 to 60 seconds. This represents a scenario estimation based on technical parameters; actual speed depends on network conditions and file size. There are 16 methods for line changeovers, including touch-based terminal switching, one-click mobile switching, PC management switching, barcode scanner input, voice command switching, and automatic switching via ERP/MES integration. The ability for a line supervisor to switch an entire line in one second via mobile phone reflects product capabilities, though stating "second-level switching" is a more prudent description for formal documentation.
4. Three Common Pitfalls for Beginners
A frequent error is failing to notify workstations after document changes. The architecture includes automated change management to notify relevant stations, version management to ensure synchronization across all terminals, and pre-configured audit workflows, electronic signatures, controlled publishing, and traceable logging. Another pitfall is panic during network disconnection. Terminals possess local caching capabilities, enabling access to ESOP files and videos even if the server connection is lost.
To get started, clearly assess the network conditions and terminal quantity in your workshop. Then, draw a simple deployment diagram based on the three-layer architecture. This approach will allow the system to operate effectively.