The programs of Figure 15-64 show the ladder logic and the FBD equivalent for an up/down counter program. The operation of the FBD program is explained in the text. a) Prepare a function block program...

The programs of Figure 15-64 show the ladder logic and the FBD equivalent for an up/down counter program. The operation of the FBD program is explained in the text. a) Prepare a function block program that will simulate its operation. Utilize field devices found on your ControlLogix installation. Enter the program into the controller, and verify its operation. b) Modify the FBD program to include the following three pilot lights: PL_1 to come on when a part enters. PL_2 to come on when a part exits. PL_3 to come on when the buffer zone is full.