Rockwell Automation 20-750-DNET PowerFlex DeviceNet Option Module - Manual (Page 27)

Rockwell Automation Publication 750COM-UM002B-EN-P - October 2012 27
Configuring the Option Module Chapter 3
Setting the Data Rate When the option module Data Rate switch ( Figure 2 ) is set to position ‘3’
(Program), the value of
Device Parameter 09 - [Net Rate Cfg] determines the
data rate. The default setting for this parameter, ‘3’ (Autobaud), will detect the
data rate used on the network if another device is setting the data rate. Your
application may require a different setting.
1. Set the value of
Device Parameter 09 - [Net Rate Cfg] to the data rate at
which your network is operating.
2. Reset the option module; see Resetting the Option Module on page 32 .
Setting a Master-Slave
Hierarchy (Optional) 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 (1756-DNB, 1771-SDN,
1747-SDN, and so forth).
Enable Datalinks To Write Data
The controller output image (controller outputs-to-drive) can have 0 to 16
additional 32-bit parameters (Datalinks). The quantity of additional parameters
is configured using
Device Parameter 02 - [DLs From Net Cfg].
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. 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:
From Net Parameter Value = (10000 * port number) + (Destination Parameter Number)
Value Data Rate
0 125 Kbps
1 250 Kbps
2 500 Kbps
3 Autobaud (default)
ESC ENTER
Stopped
0.00 Hz
AUTO
F
▲ ▼
Edit Net Rate Cfg
Autobaud 3
0 << 3
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.