Rockwell-automation 21G PowerFlex 750-Series AC Drives Programming Man Uživatelský manuál stáhnout pdf (Strana 488)

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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.

1 2 ... 483 484 485 486 487 488 489 490 491 492 493 ... 543 544

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