segment
The combination of: a continuous length of trunk cable connecting a pair of taps; the two taps; and the drop cables between the two taps and their node devices One or more segments form a section of the network See section and tap.
serial port
An communication port at which data is transferred one bit at a time
slave
A networked device which is controlled by another device Slave devices do not initiate data transactions They respond to commands or requests initiated by a master device See master
slot time
The amount of time representing the worst case time any station on the network must wait for a response from another station It is based upon the response time of the network's slowest station and the bus propagation delay
Specific Input
A type of data input received by a node using Peer Cop data transfers Nodes using Peer Cop can be configured to receive up to 32 16/bit words of Specific Input data from each of up to 64 source nodes, up to a maximum total of 500 words Nodes can be configured to accept or ignore incoming data from specific source nodes
Specific Output
A type of data output sent by a node using Peer Cop data transfers Nodes using Peer Cop can be configured to send up to 32 16/bit words of Specific Output data to each of up to 64 destination nodes, up to a maximum total of 500 words
splitter
A passive device that allows a cable to be routed into multiple paths with essentially equal signal amplitude in each path Not used with Modbus Plus
start delimiter
A field that defines the start of a frame, occurring after the signal has been detected and synchronized by the receiving node See end delimiter
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