Setting a master-slave hierarchy, Selecting master-slave or peer-to-peer hierarchy, Adapter mode only) – Rockwell Automation 20-750-ENETR PowerFlexDual-Port EtherNet/IP Option Module User Manual
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Rockwell Automation Publication 750COM-UM008A-EN-P - July 2012
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Configuring the Option Module
Chapter 3
Selecting Master-Slave or
Peer-to-Peer Hierarchy
(Adapter mode only)
This procedure is only required if Datalinks are used to write or read data of the
drive or its connected peripherals. A hierarchy determines the type of device with
which the option module exchanges data. In a Master-Slave hierarchy, the option
module exchanges data with a master, such as a scanner or bridge. In a Peer-to-
Peer hierarchy, the option module exchanges data with EtherNet/IP Option
Modules in other PowerFlex 750-Series drives.
For both Master-Slave and Peer-to-Peer hierarchies, the devices exchanging data
must be on the same IP subnet. See “IP Addresses” in the
for
information about IP subnets.
Setting a Master-Slave Hierarchy
Enabling Datalinks To Write Data
The controller output image (controller outputs-to-drive) can have 0 to 16
additional 32-bit parameters (Datalinks). They are configured using
Host
Parameters 01 - [DL From Net 01]
through Parameter 16 - [DL From Net
16]
. The number of Datalinks actively used is controlled by the connection size
in the controller. See the respective controller example sections in
more information on setting the connection size.
When using a ControlLogix controller and the Generic Profile, configure the
Datalink parameters now as described in this section.
Host Parameters 01 - [DL From Net 01] through 16 - [DL From Net 16]
control which parameters in the drive, option module, or any other connected
peripheral receive the values from the network. The PowerFlex 20-HIM-A6 or
20-HIM-C6S HIM, DriveExplorer software, or DriveExecutive software can be
used to select the drive or peripheral by port number and the parameter by name.
As an alternate method, the parameter value can be set manually by number using
this formula:
From Net Parameter Value = (10000 * port number) + (Destination Parameter Number)
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.
IMPORTANT
Always use the Datalink parameters in consecutive numerical order, starting
with the first parameter. For example, use Host Parameters 01, 02, and 03 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.
TIP
When using a ControlLogix controller and an RSLogix 5000 drive Add-on
Profile, version 16.00 or later, there is no need to configure Datalink
parameters at this time. They will be assigned when configuring the RSLogix
5000 drive Add-on Profile (see