DIO
See Distriuted I/O.
DIO Drop Adapter
See DIO Adpter.
Distributed I/O
A Modbus Plus network that consists of hardware components that are specifically designed for high+speed control of Input*/*Output devices at remote sites in an industrial process. Each DIO network has one Programmable Controller or one Modbus Plus Network Option Module that operates as the master controlling node on the network. The DIO network also has one or more DIO Adapters placed at the remote plant sites. Up to 64 nodes can be present on each DIO network exchanging messages during the passing of token frames.
download
The transfer of a program from one device to another for execution.
drop cable
A cable used to connect a networked node device to a tap on the trunk cable. Drop cables are available in various lengths from Modicon. See tp.
duplicate frame
A frame received twice because an acknowledgement was lost.
end delimiter
A field that defines the end of a message.
EIA
Electronic Industries Association.
field
A logical grouping of contiguous bits that convey one kind of information such as the start or end of a message an address data or an error check.
frame
A logical grouping of contiguous bits for transmission; a message.
frame check sequence
A code that is used to determine whether a frame was received correctly.
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