12
GuardPLC Digital Input/Output Module
Rockwell Automation Publication 1753-IN003C-EN-P - June 2010
Make Connections for Safety-related Communication
The module has two 10/100BaseT, RJ45 connectors on the bottom of the unit, that provide
communication to the GuardPLC controller via GuardPLC Ethernet protocol. Because this is
an Ethernet switch, you can daisy-chain connections from the GuardPLC module to other
distributed I/O modules. The switch is auto-detect. Either crossover or straight-through cabling
can be used. Star or line configurations are available. Make sure that a network loop is not
generated. Data packets must be able to reach a node only via a single path.
The media access control (MAC) address of the module can be found on the label positioned
over both lower RJ45 connections.
A transparent label shipped with the module can be used to note the IP address and
system ID (SRS).
Reset Push Button
The module is equipped with a reset push button. Reset via the push button is necessary under
the following conditions.
•
You forget the password to go online via the programming software.
•
You are unable to determine the IP address and SRS of the controller.
The push button is accessible through a small round hole at the top of the housing,
approximately 4…5 cm (1.6…2.0 in.) from the left rim and recessed approximately 9.5 mm
(0.375 in.).
To reset, press and hold the push button for 20 seconds while rebooting the device by cycling
power. Pressing the Reset push button during operation has no affect.
With activation of the reset button:
•
all accounts are deleted except for the default account.
•
IP Address and System ID (SRS) are set to their default values.
The next time you cycle power, these settings will be restored to the last values stored into
nonvolatile memory. This means that either the settings prior to the reset will be restored, or if
any settings were changed after the reset, those new settings will still be in effect.
IMPORTANT
If you attach the label to the module, make sure you do not cover any of the
ventilation slots.
IMPORTANT
Activate the reset pushbutton using an insulated pin to prevent short-circuits.
