Printronix P6000L, Руководство пользователя

Страница: 77 / 234

4-5 Graphics
Bit Image Programming Format
The syntax of the Bit Image expression must be correct. The expression must include the apĆ
propriate dot density control code, the exact number of data to be plotted, and the data itself.
The general Bit Image expression is:
ESC,CC,(n1),(n2),DATA
where:
ESC = the Serial Matrix compatible header
CC = K, L, or Y to select dot density; K = single, L = double,
Y = double density double speed, and Z = quadruple density
n1, n2 = define the number of data bytes to be printed
DATA = the dot pattern bytes
The values for n1 and n2 must be specified in the control code expression. They are defined as:
n1 = number of data bytes MOD 256
n2 = INT (number of data bytes\256)
The modulus arithmetic operator MOD refers to the integer value that is the remainder of an
integer division. The INT operator refers to integer division and is denoted by the backslash \.
Therefore, n1 is the remainder of the number of data divided by 256 and n2 is the integer value
of the number of data divided by 256.
n1 = (number of data bytes)-(n2 x 256)
n2 = (number of data bytes)\256
If the number of data bytes to be printed is less than 256, n2 equals zero and n1 equals the numĆ
ber of data bytes to be printed.
The following examples illustrate the procedure to determine the Bit Image program stateĆ
ment.
Print 450 data bytes, single density
n2 = 450\256 = 1
n1 = 450-(1x256) = 194
The program statement is:
ESC K (194)(1)(DATA)
Print 700 data bytes, single density
n2 = 700\256 = 2
n1 = 700-(2x256) = 700-512 = 188
The program statement is:
ESC K (188)(2)(DATA)
Print 180 data bytes, single density
n2 = 180\256 = 0
n1 = 180-(0x256) =180-0 = 180