| 摘要 |
PURPOSE:To easily test and adjust a digital control system. CONSTITUTION:A dedicated programmable controller 5 for simulation which simulates equipments to be controlled is connected to a transmission line 6 through a transmission station 10 and data input and output to and from a common memory by the functions of the equipments 3a and 3b to be controlled and transmission stations 12 and 11 to which they are connected are stopped with simulation commands by functions from a human interface device 1; and simulation results by the functions of the programmable controller 5 for simulation are sent to programmable controllers 2a and 2b for control through transmission stations 7, 8, and 10 and the transmission line 6 to perform simulation by the function through the programmable controller 5 for simulation, thereby testing and adjusting the software of a system, function by function, without placing the equipments 3a and 3b to be controlled in operation. |
