Rockwell Automation 25-COMM-P PowerFlex PROFIBUS DPV1 Adapter - Manual (Page 26)

26 Rockwell Automation Publication 520COM-UM004A-EN-E - November 2013
Chapter 3 Configuring the Adapter
Using Master-Slave Hierarchy
(Optional) This procedure is only required if Datalinks are used to write or read data of the
drive. A hierarchy determines the type of device with which the adapter
exchanges data. In a Master-Slave hierarchy, the adapter exchanges data with a
PROFIBUS master, such as a Prosoft MVI69-PDPMV1 Master Network
Interface module for CompactLogix.
Configuring a Master-Slave Hierarchy
The controller I/O image can have anywhere from zero to eight (four In and four
Out) additional 16-bit parameters called Datalinks. They are configured using
Host parameters C161 [Opt Data In 1] through C164 [Opt Data In 4], and
C165 [Opt Data Out 1]
through C168 [Opt Data Out 4]. The number of
Datalinks actively used is controlled by the connection size in the controller and
the in/out parameters. See the respective controller example sections in
Configuring the PROFIBUS Master on page 31 for more information on setting
the connection size.
When using a ControlLogix or CompactLogix controller and the Generic
Profile, or a MicroLogix 1100/1400 controller, configure the Datalink
parameters now as described in this section.
Enabling Datalinks To Write Data
Host parameters C165 [Opt Data Out 1] through C168 [Opt Data Out 4]
control which parameters in the drive send values to the network. To configure
these parameters, set them to the drive parameter number you want to correlate
them to.
The following steps are required to enable Datalinks to write data:
1. Set the values of only the required number of contiguous drive-to-network
Datalinks needed to write data to the network and that are to be included
in the network I/O connection.
2. Reset the adapter by power cycling the drive.
After the above steps are complete, the adapter is ready to send output data and
transfer status data to the master (controller). Next, configure the controller to
recognize and transmit I/O to the adapter. See
Configuring the PROFIBUS
Master on page 31 .
IMPORTANT Always use the Datalink parameters in consecutive numerical order, starting
with the first parameter. For example, use Host parameters C165, C166, and
C167 to configure three Datalinks to write data. Otherwise, the network I/O
connection will be larger than necessary, which needlessly increases controller
response time and memory usage.