A: A production line electronic Kanban is not simply a television screen hung up. It is a digital terminal placed next to workstations that pushes real-time on-site information such as work order progress, SOP/ESOP work instructions, exception calls, and quality status directly to operators. This allows frontline personnel to immediately see what needs to be done now, how to do it, and how well it is being performed just by looking up.
Suppose you enter an SMT workshop in a hypothetical electronics factory where multiple lines are running simultaneously with frequent changeovers. Previously, the line leader held a stack of paper work orders. During changeovers, they had to distribute drawings to each workstation one by one and give verbal instructions on precautions. Operators would flip through documents and search for versions, causing delays of over ten minutes. The situation was even more complicated when equipment suddenly alarmed or materials were unavailable; operators had to run to the office to find someone. Information was passed layer by layer, and by the time the issue was resolved, semi-finished products had already piled up. This is a typical case of on-site information discontinuity—data exists in the system, but people cannot see it.
Once the problem is exposed, three main issues emerge: information lag, version chaos, and slow exception response. The production line electronic Kanban aims to connect these three areas. It is typically deployed at the head of the production line or at key workstations, interfacing with an MES or work order system. It displays real-time data including the current work order number, product model, planned output, actual completed quantity, and first-pass yield. During changeovers, the Kanban automatically switches to display the corresponding SOP/ESOP files for the new product. Operators confirm via QR code scanning or card swiping, making it immediately clear whether the version is correct without needing to search through paper folders.
On a more detailed level, the electronic Kanban also serves the role of an Andon call system. When an operator presses the call button at a workstation, the Kanban instantly displays which line and which workstation is requesting help and the type of problem. Line leaders and inspection personnel can see this and handle it nearby. The duration of the handling process is also recorded. Some solutions also integrate ESD electrostatic discharge protection status and WIP inventory levels. If thresholds are exceeded, the display changes color to provide a warning. For managers, this information is no longer relied upon for post-shift report reviews; instead, it is visible during the shift and can be intervened upon immediately.
The most direct effects are shortened changeover preparation times, faster response to abnormal stoppages, and the near elimination of paper document version errors. When selecting a solution, focus on two key points: first, ensure the Kanban can interface with existing MES or work order systems to retrieve data, avoiding the creation of information silos; second, verify that the version management logic for SOP/ESOP files is clear, defining who can publish, who can modify, and how workstations confirm receipt. These two factors determine whether the Kanban is truly effective or merely decorative.