CognitiveTPG A798 Instruction Manual download pdf (Page 45)

Chapter 4: Programming Commands 45

Revision C 12/09

A798-PG00001C

Set relative print position

ASCII ESC \ n1 n2

Hexadecimal 1B 5C n1 n2

Decimal 27 92 n1 n2

Value of n:

To move the relative starting position right of the current position:

n = Number of dots to be moved right of the current position

n1 = Remainder after dividing n by 256

n2 = Integer after dividing n by 256

The values for n1 and n2 are two bytes in low byte, high byte word orientation.

To move the relative starting position left of the current position:

n = Number of dots to be moved left of the current position

n1 = Remainder after dividing (65,536-n) by 256

n2 = Integer after dividing (65,536-n) by 256

The values for n1 and n2 are two bytes in low byte, high byte word orientation.

Moves the print starting position the specied number of dots either right (up to the right margin) or left (up to the left

margin) of the current position. The print starting position is reset to the rst column after each line.

Formulas

To move to the left:

Determine the value of n by multiplying the number of columns to move left of the current position by 10 (standard) or

8 (compressed) pitch. The example shows how to set the relative position two columns in standard pitch (10 dots per

column) to the left of the current position.

2 x 10 = 20 dots (two columns to be moved left of the current position)

65,536–20 = 65516

65,516/256 = 255, remainder of 236

n1 = 236, n2 = 255

To move to the right:

Determine the value of n by multiplying the number of columns to move right of the current position by 10 (standard)

or 8 (compressed) pitch. The example shows how to set the relative position two columns in standard pitch (10 dots per

column) to the right of the current position.

2 x 10 = 20 dots (two columns to be moved left of the current position)

20/256 = 0, remainder of 20

n1 = 20, n2 = 0

Related information

If the set horizontal and vertical minimum motion units command (1D 50) is used to change the horizontal and vertical

minimum motion unit, the parameters of this command (set relative print position) will be interpreted accordingly. For

more information, see the description of the set horizontal and vertical minimum motion units command (1D 50) in this

document.

Compatibility information (A798 receipt vs. A793 receipt)

There is a difference in the normal behavior of this command in A793 emulation mode as compared to the original A793.

The difference exists when the command is used to move to the left. The A793 processes the whole print string prior to

putting it in the buffer for the print head. This method of processing allows the A793 to backup in the print string and

replace characters and their associated attributes when a “Set relative print position” command instructs the printer to

move the print position to the left.

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CognitiveTPG A798 Instruction Manual Page 45

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