Setra Systems 140CP, Руководство пользователя

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39
Never include a carriage return or line feed in any command sequence. The scale
uses any command character as a terminator for an input string. For example, if you
wish to enter a tare weight of 1000 (in the units currently being displayed), simply
send “1000T”. This will enter the number 1000 into the tare register. To enter an
average piece weight of 12.35, send “12.35A”. (The Jump and Verify Functions are
described later in this section.)
Sending Alphanumeric ID#s to the Scale
Alphanumeric identification numbers (ID#s) may be entered into the scale through
the RS-232 interface. Setra scales do not have alphanumeric keyboards, so the RS-
232 interface is the only means of entering such ID#s.
Since Setra scales recognize many uppercase ASCII characters as commands, it is
necessary to instruct the scale to ignore entries as commands when entering alpha-
numeric ID#s. Special control sequences are used to disable interpretation of alpha-
numeric characters.
To enter an ID# from a computer, send the following string to the scale:
/ [string identifier] $S
The ID START (or introducer), “/”, instructs the scale to ignore subsequent charac-
ters as commands. The ID FINISH (or terminator), “$”, instructs the scale to interpret
subsequent characters as commands. The ID# entry command, “S”, instructs the
scale to enter the string identifier into the ID# register.
The string identifier may consist of any uppercase ASCII character (A-Z), any
number (0-9), a space, or a hyphen (-). It may be up to 25 characters in length.
Lowercase ASCII characters (a-z) are translated into uppercase by the scale. All
other characters are ignored by the scale.
DO NOT SEND A CARRIAGE RETURN, CR, OR A LINE FEED, LF, DURING OR
AFTER THE STRING IDENTIFIER.
After receiving the ID START character, the scale accepts the ASCII DEL (hex 7F) as
a rubout/backspace. It deletes the last entered character from the ID# entry.
When interfacing with the Setra Auto Count 200 system, a space SP must be
included after the ID START character and after the ID FINISH character for Code 39
bar codes.
In addition to ID, other registers are available for storing information such as descrip-
tion and lot #, etc. For additional information, please refer to the Auto Count 200
manual.