Bay Technical Associates 525H 사용자 설명서

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This is a single character that indicates a completed message to the
multiport in Modes of Operation 2, 3, 4 and 5.  Data is held in the
buffer of the multiport until the message terminating character is
received from the peripheral device which defines a complete
message.  The message is eventually sent to the host device
depending on which mode of message multiplexing the multiport is
operating in.  The single message terminating character is in the form
of any two-digit hexadecimal character from 00 Hex to 7F Hex.

Carriage Return (0D Hex).

The data block length is the maximum number of characters per data
block transmitted out of the host port while operating in Mode 6.  You
may select a data block length of 1 to 250 characters.

The control character is used to select specific peripheral ports, to
request messages, for port identification purposes, and to access
configuration mode.  To select a peripheral port, the host device
sends the control character followed by the desired peripheral port
number.   To request messages in Mode 3 of operation, the host
device sends the control character followed by capital S.  To request
messages in Mode 4 and Mode 5 of operation, the host device sends
the control character, capital S, and the desired peripheral port
number.  In Mode 6 of operation, the host port sends the control
character and the source peripheral port number preceding each data
block.  The control character may consist of any single character from
00 Hex to 7F Hex.