Owner`s manual

12
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The Model 24H allows the host device to assign an individual logical
name to each peripheral port for reference while the unit is in
configuration mode.
Factory default for ports on individual ports is Device A Host for
Port 1, Device B for Port 2, ..., and Device X for Port 24.
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The Model 24H allows the host device to program the port select code
to be any ASCII character string up to eight ASCII characters. The port
select code is used to select specific peripheral ports, to request
messages, and for port identification purposes.
In order to select a specific peripheral port to send data to, the host
device sends the port select code, the desired port number (02 to 24),
and a terminating character (0D Hex - Carriage Return or 0A Hex - Line
Feed ). This port select sequence applies in all modes of operation.
The port select code followed by ASCII capital S is also sent by the
host device to request messages from the peripheral devices in modes
3 through 5 of operation.
The port select code followed by a two-digit number is sent to the host
device preceding each data block for port identification purposes in
Mode 6 of Operation.
The factory default port select code is $SELECT.