Installation guide
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Cooper Bussmann BU-905U-L Wireless I/O Configuration Manual
TRANSMITTER INFORMATION
This section contains specific information for configuring your BU-905U-L-T unit.
Sending data to another station using Mappings
To send data from a transmitter module BU-905U-L-T to another BU-905U series module you must configure mappings in the transmitter unit.
Mappings let you link inputs at the transmitter unit to outputs at another BU-905U series module and lets you configure which inputs are sent to
which outputs. Mappings can be triggered on a change of state (event reporting) or on a timed basis (periodic update).
BU-Config lets you:
Featur
e Description For mor
e information, see …
Add unit mappings Lets you add a new mapping to link inputs to outputs: Adding new mappings on page 46.
Change unit mappings Lets you change an existing mapping. Changing unit mappings on page 50.
Delete unit mappings Lets you remove an existing mapping. Deleting unit mappings on page 51.
For more information, see the next sections.
Adding New Mappings (BU-905U-L-T ONLY)
BU-Config lets you add mappings to define how the system shares information. Conceptually a mapping takes the value of an input and shares it
with another module, usually by setting the state of one of the module outputs. The mapping display shows all inputs (including physical inputs
and internal inputs) for the selected module.
BU-905U-L-T transmits messages only; it cannot receive messages and has no communication failure contingency.
BU-Config lets you send multiple input values in a single message to help reduce the number of transmissions.
You can also:
• Invert inputs – if you invert an input, the transmitted message sends the inverse value of the actual input; and
• Reverse analog inputs – the inverse of an analog input reverses the magnitude of the value (e.g. 4mA becomes 20mA).
NOTE: Do NOT invert pulsed inputs.
BU-Config uses arrows to indicate the communication direction:
Arro
w Description
1-way communication
2-way communication (i.e., re-transmits
message if no acknowledgement received)
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