Installation guide

Glossary
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frame descriptor
A part of the host computer’s buffer structure that links
transmitted or received data frames to appropriate priority
queues. Frame Descriptors contain MAC frame parameters,
frame status, and pointers.
Global 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 Global Input data from each of up to 64 source
nodes, up to a maximum total of 500 words. Incoming data from
each source node can be indexed into up to eight fields for delivery
into separate data destinations in the receiving node.
Global 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 Global Output data, which is globally broadcast
to all active nodes on the network. Destination nodes can be
configured to accept or ignore incoming data from specific source
nodes.
HDLC
High-level Data Link Control. The part of the device that
performs the protocols for defining the beginning and end of a
frame, synchronizing the frame between sender and receiver,
providing CRC error checking, and defining the portion of the
received information that is to be checked by the CRC.
host computer
A computer which controls other computers and devices. In an
industrial process with networking, the host computer specifies
the current requirements for the operation of remote nodes, and is
the destination for summary data reports about the performance
of the process.
IEC
International Electrical Commission.
IEEE
Institute of Electrical and Electronics Engineers.
ISO
International Standards Organization.