Rockwell Automation IASIMP Computer Numerical Control (CNC) Machining Accelerator Toolkit Quick Start - Manual (Page 229)

Rockwell Automation Publication IASIMP-QS034A-EN-P - October 2012
229
Appendix
A
Logic Program Overview
The CNC Machining Accelerator Toolkit DVD, publication IASIMP-SP018 , was developed around a modular
concept. Modularity lets you decide which components to incorporate into your machine, providing greater
flexibility and a custom fit. The preconfigured logic is specifically designed around this modular concept and
consists of three main logic modules.
Table 12 - Logic Module Overview
Logic Module Type Function
Machine
The machine module contains the high level control for the entire machine. The machine module was built around a simple
state machine that you can customize to fit most applications. The machine module broadcasts out commands and receives
feedback information from each of the application and device modules. Based on the feedback information, the machine
will react accordingly.
In addition, the machine module provides a high level interface with the HMI, accepting commands like Start, Stop, and
Clear Faults. It provides status info to the HMI terminal like current state of the machine (for example, RUNNING versus
STOPPED).
Application
The application modules contain all of the application specific code. This is where a majority of the customizing is expected
to occur and is essentially a programming space where you spend a significant portion of your efforts to develop
proprietary logic specific to your application.
Device
Device modules contain all of the logic to control the essential functions required by the device. For example, an integrated
motion servo drive like the Kinetix 6500 requires logic (MSO/MSF instructions) to enable and/or disable the servo drive.
This logic reduces the programming effort required by most applications providing more time for the proprietary logic
needed for the application.
Typically, the device module consists of a physical drive, but could also consist of a virtual or feedback-only axis. Device
modules can also consist of multiple devices (for example, a drive) and perhaps a feedback device (for example, a sensor).