Enable datalinks to read data – Rockwell Automation 20-750-DNET PowerFlex DeviceNet Option Module User Manual
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Rockwell Automation Publication 750COM-UM002B-EN-P - October 2012
Chapter 3
Configuring the Option Module
For example, suppose you want to use
Host Parameter 01 - [DL From Net 01] to
write to Parameter 03 of an optional encoder module plugged into drive Port 5.
Using the formula, the value for
Host Parameter 01 - [DL From Net 01] would
be (10000 * 5) + (3) = 50003.
Follow these steps to enable Datalinks to write data.
1.
Set the value of
Device Parameter 02 - [DLs From Net Cfg] to the
number of contiguous controller-to-drive Datalinks that are to be
included in the network I/O connection.
2.
Reset the option module; see
Resetting the Option Module on page 32
.
3.
Since the Logic Command and Reference are always used in the option
module, configure the parameters in the drive to accept the Logic
Command and Reference from the option module.
When using the controller for speed reference via the option module, set
two fields in drive Parameter 545 - [Speed Ref A Sel].
a. Set the Port field for the drive (for example, 0 - PowerFlex 755).
b. Set the Parameter field to point to the port in which the option module
is installed (for this example, Port 4 Reference).
Also, verify that the mask parameters in the drive (for example,
Parameter 324 - [Logic Mask]) are configured to receive the desired
logic from the option module. See the drive documentation for details.
After the above steps are complete, the option module is ready to receive input
data and transfer status data to the master (controller). Next, configure the
controller to recognize and transmit I/O to the option module. See
Enable Datalinks To Read Data
The controller input image (drive-to-controller inputs) can have 0 to 16
additional 32-bit parameters (Datalinks). The quantity of additional parameters
is configured using
Device Parameter 04 - [DLs To Net Cfg].
IMPORTANT
Always use the Datalink parameters in consecutive numerical order, starting
with the first parameter. For example, use Host Parameters 17, 18, 19, 20, and
21 to configure five Datalinks to read data. Otherwise, the network I/O
connection will be larger than necessary, which needlessly increases controller
response time and memory usage.
ESC
ENTER
Stopped
0.00 Hz
AUTO
F
Edit DLs From Net Cfg
0
0 << 16