6 setting the data rate – Rockwell Automation VSM500 Integrated Drive/Motor DeviceNet Option Board User Manual
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3-6
VSM500 DeviceNet Option Board
Step 2. Type a unique node address, and then click Save to Device.
Step 3. Click OK to close the dialog box.
Step 4. Reset the DeviceNet option board. The new setting for this parameter will
take effect after a reset. See section 3.13 for more information.
After setting a new node address, you must scan the network. DeviceNet Manager will
then display the new address in the Network Who window (see figure 3.7) and be able
to communicate with the drive so that future parameter changes take place.
3.6
Setting the Data Rate
If switches 7 and 8 on the DeviceNet option board are On, the value of parameter 104
[
NV
BAUD
RATE
] determines the data rate at which the unit communicates on the
network. By default, this parameter sets the data rate to autobaud. If another device
on the network is setting a specific DeviceNet data rate, use autobaud to automatically
set the adapter to it. Otherwise, you must set the parameter to the data rate at which
the network is operating.
Step 1. In the Device Configuration - Enhanced Mode dialog box (see figure 3.8),
double-click parameter 104 [
NV
BAUD
RATE
]. The Device Configuration -
Modify Enumerated Parameter dialog box appears.
Step 2. Select the data rate at which the network is operating or autobaud, and then
click Save to Device.
Step 3. Click OK to close the dialog box.
Step 4. Reset the DeviceNet option board. The new setting for this parameter will
take effect after a reset. See section 3.13. See section 3.13 for more
information.
Step 5. The VSM500 unit will fault after it is reset because it will not be operating at
the same data rate as other devices (e.g., the computer) on the network.
Clear the fault.
Communications with DeviceNet Manager will be disrupted because the VSM500 unit
and DeviceNet Manager will not be operating at the same data rate. Disconnect the
software and then reconnect at the new data rate.
Figure 3.10 – Modifying the Data Rate Parameter