Design and implementation of a process control language for an automated pager manufacturing system

A process control language far an automated pager manufacturing system and its implementation are dealt in this paper. The pager manufacturing process consists of the tuning process doing in the tuna TEM-cell and the examination process doing in lire exam TEM-cell. Three capacitor trimmers are tuned to optimize the slate of the pager in the shielding bm, we call it TEM-cell, using small motors, pneumatic actuators and sensors. In the TEM-cell equipped with a CCD camera and pneumatic actuators, message receiving status with an arbitrary message calling is tested using a vision system. For both tuning and examination process, 37 process control commands are defined by analyzing the manual pager manufacturing process. Project editors to make a process description command file, we call it project file, are also presented. The system is composed of a desktop personal computer(PC586) and two TEM-cells, two Flex pager testers, an oscilloscope, a camera, sensors and actuators controlled by 5 Lonwork controllers, Visual Basic running on the Windows 95 is used to implement the control software which has the GUI function to make on operator convenient The effectiveness of the completed control program is shown by the field test with the machine developed in the KITECH, Korea, which is now ready for production.