Installation guide

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Cooper Bussmann BU-905U-L Wireless I/O Configuration Manual

Encrypting Messages by Setting a Security Code

BU-Config lets you set a system security code to help ensure the messages that your network uses remain private. This provides an additional

security layer to protect the system from malicious access (e.g. hacking).

When security is enabled the BU-905U-L-T uses the security code to encrypt all transmitted radio messages and the BU-905U-L-R will only

receive messages encrypted with the same security code.

NOTE: By default, the BU-905U-L does not encrypt radio messages. You must enable security if you want to encrypt radio messages.

The BU-905U-L uses the security code to encrypt radio transmissions using 64-bit encryption.

All modules in the same system must use the same security code to encrypt and decrypt messages or they cannot communicate with each other.

The security code is downloaded to each module when you download the configuration.

NOTE: You can download the configuration at any time. BU-Config overwrites the old security code if the new security code is different

or the new configuration has no security code. You can also remove the security code if required. For more information, see Removing the

security code on page 25.

To set the security code:

1. Open the project.

2. Select Enable Security

3. BU-Config automatically generates a random 8-character security code for the system. You can use the random security code generated by

BU-Config or enter your own code.

4. If you modify the security code, BU-Config prompts you to confirm the code by re-entering the code:

NOTE - The security code can be 1 to 8 characters or numbers and is case-sensitive.

A longer security code is stronger (i.e., offers a higher level of security) than a shorter security code

To ensure the security code remains confidential, BU-Config shows a hash character (i.e., “#”) for each letter or number entered; BU-Config

never shows the security code in plain text.

5. Click Set Field to set the new value or click Cancel Field to keep the original value.

6. Click OK to save the security code for the project.

NOTE - If you do not enter the same security code when confirming, BU-Config shows the following warning:

Click OK to acknowledge the message and re-enter the security code.

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