Today, Programmable Logic Controllers (PLCs) are widely used at the modem manufacturing automation. With an increasing demand for networking facility as well as a natural, intuitive man-machine interaction in automated industry, the graphical programming for multi-PLC control is gaining much attention nowadays. This paper develops a PC-based virtual instrument (VI) that can carry out a remote monitoring and control for up to eight-PLC-based precise riveting systems via the Internet. The real-time implementation shows its good performance and presents the illustrative demonstration.