KEBA DM272/A  Analog input module

Inductive loads can be connected without a protection diode on the load. However, Rockwell Automation strongly recommends that a protection diode be fitted directly to the load to suppress any interference voltage. A 1N4004 diode is recommended.

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

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).

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.

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