<p>An image processing system is provided with a first motor controller (40), which is provided with a communication interface (42) connected in series with a transmission path and outputs a position detection signal by obtaining the detection position of an object to be controlled; an image processor (30), which is provided with a communication interface (32) connected in series with the transmission path and with a memory (34) for storing the position detection signal, performs image pickup of a work (60) and generates an image processing signal based on image processing; and a master device (10) for controlling communication of the image processor (30) and the first motor controller (40). The image processor (30) starts the image processing based on a start command from the external, stores the position detection signal in the memory (34) and outputs the position detection signal to the master device (10).</p>
