User's Manual

6-4
has two data entry “prompt” commands combined. If this message were sent
to the RF Terminal, the first data entry prompt (@1,1,1,ITEM) would be
executed, but any and all commands after the first data entry prompt in that
statement would be ignored without warning – there will be no display or
indication of an illegal command.
• The @S command (for serial output) statement cannot be combined with
any other command - even clear (@Cx) commands. After a @S command
is successfully completed, the Base Station sends back to the host the RF
Terminal ID followed by a CR (ASCII 13). There is a 247 character limit
on data for this command. If you send a command of more than 247
characters, you will get an Illegal Command returned, (ID ? CR). If you
need to send 300 characters of data, send the first part, wait for the
acknowledgement (ID CR), and then send the remaining part.
If you are using the @S command with a printer, you should have the
Protocol parameter in the RF Terminal set to XON/XOFF. This will
allow the RF Terminal to deal with the character buffer limitations of your
particular printer. If you are using the O’Neil MicroFlash Printer, you must
send a NULL character before the valid data to wake up the printer. See
your printer manual for details and see Chapter 6 for details on printer
protocol.
If you are using a Cameo or Encore printer, you must have a RF Terminal
that displays Z on the same line as the Frequency on the opening screen. If
you don’t have a Z, the printer will not wake up. The Encore/Cameo
printers wake up when their DSR line is raised; this takes a hardware
modification on the RF Terminal which is no charge when specified at
time of order; the cost to retrofit a unit for Cameo/Encore wake-up
capability is the minimum repair charge, $85. Call us for an RMA number,
as the terminals must come back to us.
• Every statement must end with a data entry “prompt” command, whether
the statement is a single command by itself or several commands
combined together. Any illegal statement will be ignored as a command
but will be displayed on the addressed RF Terminal display exactly as
written. If no Terminal ID was included in the statement, it will try to
display the invalid statement on ID 0. Once the ENTER key is pressed on
the Terminal displaying the invalid statement, the terminal sends the Base
Station a “?” character. The Base Station then in turn sends the message
n?CR (where n is the Terminal ID and CR is a carriage return) back to the
Host computer. RF Terminal software versions prior to 9.059 did not
handle illegal statements the same way; for backwards compatibility, see
the setup parameter for Protocol (change it to E).
• Prior to RF Terminal version 9075, the RF Terminal was available only
with a 4 line display. The “Clear lines” command (@Cx) for the 4 line