Homelite HL-1450, HL-P2500, HL-1660E, HL-2400CE, HL-1050, HL-1250, HL-1070 Variables, Invalid Commands

10/10/03

1.4.Variables

PJL can use alphanumeric variables, numeric variabless and strings.

1.4.1.Alphanumeric variables

The first character must always be a character in the allowable range of letters and digits. Letters consists of the uppercase characters (ASCII 65-90) and lowercase characters (ASCII 97-122). Digits consists of the numbers 0-9 (ASCII 48-57).

<Example>

Brother2245

1.4.2.Numeric variables

The number consists of digits with one optional decimal point and an optional + or - sign preceding the first digit.

<Example> <Wrong> 0.1234

-123.4+.05

+123.0-.05

1.4.3.Strings

Strings consist of any combination of characters from ASCII 32 to 255, plus ASCII 9, except ASCII 34 (quotation marks), which are used to define the start and end of a string.

<Example>

"Print Job KKK"

"This is a sample string"

1.5.Invalid Commands

There are two general types of invalid commands. Each type operates differently.

Syntax errors include :

•unrecognized command and command modifier

•strings which are missing quotation marks

•numeric values which are missing digits before the decimal point

1.5.1.Syntax errors

Commands received with Syntax errors cause the printer to ignore the entire PJL command.

1.5.2.Syntax warning and semantic warning

Syntax warnings and semantic warnings are issued for commands which include unsupported options, values which are out of range, or wrong or missing commands, etc. When the printer receives commands which would create a syntax warning or semantic warning, it operates the command as long as possible, however, the portion of the command which would create a warning is ignored.

CHAPTER 5 PJL - 7