Rockwell Automation 20-750-PNET Profinet Single Port Option Module - Manual (Page 32)

32 Rockwell Automation Publication 750COM-UM006A-EN-P - January 2013
Chapter 3 Configuring the Option Module
Enable Datalinks To Read Data
The controller input image (drive-to-controller inputs) can have 0 to 16
additional 32-bit parameters (Datalinks). They are configured using
Host
Parameters 17 - [DL To Net 01] through 32 - [DL To Net 16]. The number of
Datalinks actively used in the controller is determined by the number of
Datalinks installed in the hardware configuration. See the controller example
sections in
Chapter 4 for more information on setting the hardware
configuration.
When using a PLC, configure the Datalink parameters now as described in this
section.
Host Parameters 17 - [DL To Net 01] through 32 - [DL To Net 16] configure
which parameters in the drive, option module, or any other connected peripheral
send the values to the network. You can use the PowerFlex 20-HIM-A6 or 20-
HIM-C6S HIM, or another drive configuration tool such as Connected
Components Workbench, DriveExplorer, or DriveExecutive software 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:
To Net Parameter Value = (10000 * Port Number) + (Origination Parameter Number)
For example, suppose you want to use
Host Parameter 17 - [DL To Net 01] to
read Parameter 2 of an optional I/O module plugged into drive Port 6. Using the
formula, the value for
Host Parameter 17 - [DL To Net 01] would be (10000 * 6)
+ (2) = 60002.
Follow these steps to enable Datalinks to read data.
1. Set the values of only the required number of contiguous drive-to-
controller Datalinks needed to read data from the drive and that are to be
included in the network I/O connection.
2. Reset the option module; see Resetting the Option Module on page 36 .
The option module is configured to send output data to the scanner (controller).
You must now configure the controller to recognize and transmit I/O to the
option module. See
Chapter 4 , Configuring the Profinet Master .
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.