Rockwell Automation 21G PowerFlex 750-Series AC Drives Programming Manual - Manual (Page 488)

488 Rockwell Automation Publication 750-PM001J-EN-P - October 2014
Appendix C Using DeviceLogix
Tips Data Types
The DeviceLogix Analog In/Out parameters support different data types. For
example, P17 [DLX In 01] is a Real whereas P32 [DLX In 16] is a DINT. Be sure
to assign a DLX In / Out to a parameter that has the same data type.
Function Block elements also support different data types. Click the Properties
Button in the upper right-hand corner of each element to display the
Function Block’s properties. The Function Data Type field displays the
supported data types. If Real DLX Ins are used with a Function Block element
configured for DINT (typical default), the fraction is truncated.
PowerFlex 755 v1.xxx Firmware Datalinks and internal DeviceLogix
scratchpad registers (P54…P81)
DLX In’s and DLX Out’s are Datalinks and cannot be directly mapped to each
other or another Datalink, such as a Datalink in the Port 13 Embedded
EtherNet/IP. Use the DeviceLogix internal scratchpad registers to pass data
between the Datalinks.
Example 1 – Reading data from the network
A value from the network is input to DLX Real SP 1.
DLX In 01 reads DLX Real SP1 and can now be used as an Analog Input in the
DeviceLogix program.
DLX Real SP1 is the intermediary register that allows the two Datalinks to work
together.