Patent ID: 7505875
Filing Date: 2009-03-17
Classification: G05B

Abstract:
1. A monitor system comprising: a programmable controller for executing a user program to carry out a control; a data collecting unit connected to said programmable controller for collecting variable data of said programmable controller; and a monitor device connected to said data collecting unit through a communication line; said data collecting means including collecting means for collecting real variable data in the calculation formula stored in said memory means and any other real variables from said programmable controller; said monitor device including: wherein said collecting means includes means for collecting data on the real variables from a memory of said programmable controller based on mapping data in synchronism with the cycle time of said programmable controller and means for transmitting the collected data on the real variables to said monitor device; wherein said calculating means includes means for obtaining the data on the real variables from said collecting means and means for generating a data array of virtual variables by substituting the obtained data into the calculation formula stored in said memory means; and wherein said displaying means displays the obtained data on the real variables from said collecting means as waveforms on said display device.