12 Rockwell Automation Publication DNET-IN001B-EN-P - January 2012
Chapter 1 Install a 1756 DeviceNet Communication Module
Determine Module Slot
Location
Install the communication module in any slot in the ControlLogix chassis. You
can install multiple communication modules in the same chassis. This example
shows chassis slot numbering in a 4-slot chassis. Slot 0 is the first slot and is always
the leftmost slot in the rack.
Set the Communication
Rate
The 1756-DNB scanner module supports the following DeviceNet network
communication rates:
• 125 Kbps (default)
• 250 Kbps
• 500 Kbps
Change the communication rate by setting the rotary switch or commissioning
the 1756-DNB scanner module 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 module will reset to factory default settings at powerup.
1
4
5
6
2
20806
3
Item Description
1 Power supply
2Chassis
3Slot 0
4Slot 1
5Slot 2
6Slot 3
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 module.
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