OptiGrafix Screen Editor

The OptiGrafix Screen Editor allows custom generation of screens and applications for MACO operator stations. It includes graph functions that allow the creation of SPC graph screens, profile screens for blow molding applications, and line graph and bar graph screens for setpoint versus proces value comparison.

Statistical Process Control (SPC): The SPC option provides for the simultaneous calculation of ten different user selectable parameters. Any process value from the system can be selected as an SPC parameter. Each of the ten parameters allows selection of sample size, time or event based triggering, time between readings, time between sample groups, and upper and lower control specification limits. X-Bar, R, and histogram charts can be displayed for each of the values. Calculated X-Bar, R, Cr, and CpK values are also available.

The last 100 calculated values for each of the 10 parameters remain in memory and are available for the operator to view and print on demand or automatically after 100 points have been collected. SPC alarms based on industry accepted standards are available to the sequential machine control to make machine decisions based on part quality.

Math Functions: The optional math function provides the capability to perform basic calculator operations (addition, subtraction, multiplication, and division) and comparison tests (greater than, less than, and equal to). The math function can be used to calculate parameters for display or to modify setpoints based on other setpoints or values. Control relays are also available for use in alarming based on the math calculations. Applications lending themselves to the math function are:

• Closed loop, customized shotsize control
• Shot to shot control adjustment
• Cascaded control loops
• Calculation of average hydraulic pressure
• Calculation of torque and horsepower
• Production reporting

Secuirty: OptiGrafix is used to assign any one of four security levels to each screen. Each security level provides access to screens of that level, plus screens of any lower level. Thus, level four provides access to screens assigned to security level 1, 2, 3 or 4, while level one provides access only to screens assigned security level one.

OptiGrafix is also used to assign one or more security codes to each security level. When the operator station is powered up, the first screen displays a field for entry of a security code. Only screens whose security level is equal to or lower than the code entered will be accessible.