6
Rockwell Automation Publication 1756-IN065A-EN-P - September 2017
ControlLogix DeviceNet Scanner Module
Set the Communication Rate
The 1756-DNB scanner supports the following DeviceNet network
communication rates:
• 125 Kbps
• 250 Kbps
• 500 Kbps
The factory default setting is 125 Kbps.
Change the communication rate by setting the rotary switch or
commissioning the 1756-DNB scanner in RSNetWorx™ for DeviceNet
software.
Use the switch to select a specific communication rate. When the
switch is set to 3...9 (except for 888), you can configure the
communication rate with RSNetWorx for DeviceNet software. When
all three switches are set to 8, the 1756-DNB scanner resets to factory
default settings at powerup.
See Restore the Factory Default Settings for more information.
See the following table for switch settings.
Communication Rate Rotary Switch
Set the Rotary Switch
Use the communication (data) rate rotary switch to change the
communication rate.
1. If the module is removed from the chassis, be sure that power is
removed or the area is nonhazardous before proceeding.
2. Move the rotary switch to the desired position.
3. If necessary, reinstall the module into the chassis.
Use RSNetWorx for DeviceNet Software
Follow this procedure to use RSNetWorx for DeviceNet software to set
the communication rate.
For more information, see the DeviceNet Modules in Logix5000™
Control Systems User Manual, publication
DNET-UM004
.
1. In RSNetWorx for DeviceNet software, select the 1756-DNB
scanner.
2. Select Tools and Node Commissioning.
3. Browse to the DeviceNet network for the 1756-DNB scanner
you want to commission.
4. Select the 1756-DNB scanner you want to commission.
5. In the Data Rate field, select the communication (data) rate.
6. Click Apply.
7. Cycle power to the 1756-DNB scanner.
Set the Node Address
The 1756-DNB scanner supports DeviceNet node addresses 00...63.
The factory default setting is node address 63.
Change the node address by setting the rotary switches or
commissioning the 1756-DNB scanner in RSNetWorx for DeviceNet
software.
Use the switches to select any network address from 00 through 63.
When the switches are set outside of this range (except for 888), you
can configure the node address with RSNetWorx for DeviceNet
software. When all three switches are set to 8, the 1756-DNB scanner
resets to factory default settings at powerup. See Restore the Factory
Default Settings for more information. See the following table for
switch settings.
ATTENTION:
Do not change the communication rate on an active
network. Unpredictable operation may result. In addition, the new
communication rate does not take effect until you cycle power to
the 1756-DNB scanner.
Switch Settings and Communication Rate
Switch Setting
Communication Rate
0
125 Kbps
1
250 Kbps
2
500 Kbps
8
When all three switches are set to 8, this resets the 1756-DNB
scanner to factory default settings.
Do not use for normal operation.
All other values
Select the communication rate with RSNetWorx for DeviceNet
software.
Front of Module
Top of Module
Communication (Data) Rate Rotary Switch
IMPORTANT
For ease of access, remove the module from the chassis before
proceeding.