Rockwell Automation Publication 1756-UM004C-EN-P - June 2021 27
Chapter 2 Connect to the EtherNet/IP Network
Mode Rotary Switch
The rotary switch in the upper left corner of the module is reserved for
redundancy features. The default position of the switch is 9 for DLR, linear, or
star topologies. The switch must be set to 7 for a redundant adapter with DLR
or star topologies.
If the switch is in a position that is not implemented, the module displays the
message “Unsupported mode. Change rotary switch setting” on the status
display. The module does not respond on any port until the mode switch is set
to the correct position and is power-cycled.
Table 5
shows the capabilities of the mode rotary switch.
Other Methods to Set the IP
Address
The 1756-EN4TR module supports the following additional methods to change
the IP address:
• BOOTP/DHCP utility
• RSLinx® Classic software
• Using Secure Digital Card
• For more information on how to use these methods, see EtherNet/IP
Network Configuration Manual, publication ENET-UM006
.
Reset the Module IP Address
to Factory Default Value
You can reset the configuration of the module to its factory default value with
the following method.
If the module has rotary switches, set the switches to 888 and cycle power.
Table 5 - Mode Rotary Switch Capabilities
Switch Position Capability
9 DLR or Single-port
8 PRP or Single-port
7 Redundant Adapter and DLR or single-port topologies
6 Redundant Adapter and PRP
IMPORTANT
If you use a redundant adapter pair, the mode rotary switches must be set
to the same value.
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