Start Here PLX3x Series ♦ Multi-Protocol Gateways
User Manual
Page 12 of 215 ProSoft Technology, Inc.
January 25, 2018
1.5 Jumper Settings
There are three pairs of jumper pins located on the back of the module.
MODE 1 - The two pins should be jumpered during normal operation.
MODE 2 - Default IP Jumper: This is the middle jumper. The default IP
address of the gateway is 192.168.0.250. Set this jumper to put the
gateway's IP address back to the default.
MODE 3 – If set, this jumper provides a level of security resulting in the
following behaviors:
o This jumper disables ProSoft Configuration Builder (PCB) upload
and download functions. If an upload or download request is made
through PCB, the error message “Error: This module has been
secured. Jumper 3 has been pinned” is displayed. This feature
is supported on PCB version 4.4.15 and above.
o If a previous version of PCB is installed and Jumper Mode 3 is set,
the configuration cannot be uploaded/downloaded to the unit and
PCB reports the following error: “Cannot connect to the module
– Check IP address and connection: 405”.
o This jumper also disables access to the PLX3x web page, making
it impossible to upgrade the firmware.
o This jumper position is recognized even if changed after module
initialization.
o Applies to all modules with firmware version 1.04.
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