56 Rockwell Automation Publication 750-RM100A-EN-P - August 2019
Chapter 7 DeviceLogix
DeviceLogix supports the most frequently used instructions in the industry to
build a logic program, including: Logical, Move, Timer, Counter, Compare, and
Math. You can configure up to 500 instruction blocks to support application
requirements.
DeviceLogix also supports custom instructions that encapsulate logic you
develop with the built-in instruction set. This feature is called a Macro
instruction, with which you can design application instructions for the target
device.
Tag Binding in PowerFlex 755T Products
Tag Binding is included in the most recent release of DeviceLogix. This tag-
mapping capability allows you to create tags for any parameter in the drive that is
needed for programming. This new feature provides a consistent programming
experience in DeviceLogix for PowerFlex 755T drives and option modules.
Benefits of DeviceLogix
Local control at the drive level allows for simple local control functions without
the need for programmable logic and automation controllers.
Some of the benefits of DeviceLogix include:
• Improves control system performance
• Performs logic on the drive that reduces loading on the centralized
controller and reduces drive-related traffic on the network
• Faster reaction. Capable of achieving response times of 2 ms (with 100
instructions blocks)
• Increases system reliability
• Improves diagnostics and reduces troubleshooting time
• Continues to run a process during network interruptions
• Increases system/machine modularity
• Divides control responsibility in the controller for smaller programs that
save memory and reduce scan times
DeviceLogix functionality can be powered through three-phase input power or
auxiliary 24V DC control power.
Some of the typical applications for DeviceLogix functionality include:
•Material handling
•Cascade pump control
•PID control
• Selector switch functions
• Signal conditioning and scaling
•Fault handling
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