480 Rockwell Automation Publication 750-PM001N-EN-P - February 2017
Appendix D Using DeviceLogix
Note the following feature differences between the drive firmware releases:
Version 3 of the DeviceLogix library introduced the following new features:
• Analog instructions (compute, math, compare, and so forth)
• Multiple I/O enable line object support
• Cut and Paste capability
• Screen format retention
• Online Help / Bit tool tip
Version 4 of the DeviceLogix library added the following new features:
• Macro Block instruction – the user programs a custom-function block
element that contains other function blocks to perform specific tasks
• PID instruction
Version 5 of the DeviceLogix library added the following new features:
• User-defined tags for function block and ladder logic
• MOV and RESET ladder instructions
• Multiple Boolean outputs and inputs for selected instructions
• Function Block diagram I/O selection improvements
• Improved process-order assignment algorithm
Note: PowerFlex 755 v1.xxx drives can be flash updated to v2.xxx to take
advantage of the new features in the Version 4 release of the DeviceLogix library
and the increased number of function blocks.
The PowerFlex 750-Series DeviceLogix can provide basic logic capability for
applications that can allow a 5…25 ms scan time depending on program size, plus
the time it takes to update the I/O. It can be used in both networked and stand-
alone environments. It can also operate autonomous of the drive. For example, it
can continue executing if the drive is faulted, or disconnected from AC input
power (requires PowerFlex 750-Series 24V DC auxiliary power supply option,
catalog number 20-750-APS).
There is no data retention in DeviceLogix during a power cycle. Timer and
counter-accumulators, calculation results, latched bits, and so forth, are cleared.
PowerFlex 755 v1.xx PowerFlex 753 v1.xx
PowerFlex 755 v2.xx
DeviceLogix Library Version 3 Version 4
Maximum number of function blocks 90 225
Program update time per number of
blocks used
5 ms (fixed): 1…45 blocks
10 ms (fixed): 46…90 blocks
5 ms (fixed): 1…45 blocks
10 ms (fixed): 46…90 blocks
15 ms (fixed): 91…135 blocks
20 ms (fixed): 136…180 blocks
25 ms (fixed): 181…225 blocks
To Next Page
Loading...
