ISPSoft User Manual 14.4 Sequential Function Chart Examples 14.4.1 Example Descriptions The example is about the rotation of two plates. The figure below is a flow chart. The actual equipment is also diagramed below. The inlet is at the right side of the platform, and the outlet is at the left side of the platform. After a plate enters the inlet, and the plate in the outlet makes its exit from the outlet, the rotator in the middle of the platform will rotate 180 degrees. After the rotator rotates, the plate which entered the inlet will be in the outlet, and the clamp from which the plate made its exit will receive another plate.
During the whole process, a plate enters the inlet independently, and the plate in the outlet makes its exit from the outlet independently. However, the rotator does not rotate independently. When the system begins to operate, the cylinders under the clamps open the clamps. After the clamps are opened, the system will send readiness signals. After the readiness signals are sent, a plate will enter the inlet, and the plate in the outlet will make its exit from the outlet. After a plate enters the inlet, and the plate in the outlet makes its exit from the outlet, the system will receive the system makes sure that the clamps are closed, the system will send a trigger signal.
After the rotator rotates completion signals, the corresponding readiness signals will be set to OFF, and the clamps will be closed. After 180 degrees, and the system receives a completion signal, the next cycle will begin. 14-48