28.5 DESIGN CASES

---

28.5.1 Devicenet

Problem: A robot will be loading parts into a box until the box reaches a prescribed weight. A PLC will feed parts into a pickup fixture when it is empty. The PLC will tell the robot when to pick up a part and load it using Devicenet.

Figure 435 Box Loading System

Solution: The following ladder logic will implement part of the control system for the system in Figure 435.

Figure 436 A Box Loading System