Input Output Event Variable

Pressmotor = {up, down, stop}

(output event variable of the control module).

Sensor position information produces input events of the control:

Presspos = {upper, middle, lower}

(input variable of the control).

For the synchronization with the robot, two additional event

variables:

the arm1 deposited the metal plate,

Arm1 = {drops}

arm2 withdrawn the forged metal plate,

Arm2 = {picks}