Technical data

Chapter 3: Programming and Calibration

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2. At the Checksum? prompt, select Y(es) or N(o) to enable or disable checksum.

Checksum is a method of checking each line of data transmitted by encoding a

check digit character at the end of the string. The receiving device must be able to

calculate and compare this character to verify the data is correct.

• Checksum is the 2s complement of the 7 low-order bits of the binary sum of

all characters preceding the checksum, including control characters. Bit 8 is

the parity bit (if enabled) of the 7 low-order bits of the checksum character.

If CTPZSU In is Selected

N(o) further parameters need to be configured. CTPZSU In is a serial connection

enabling the terminal to perform several basic functions when specific ASCII control

characters are received through the serial port.

Control characters affect the selected scale unless preceded by a specific scale

designation character (A, B, or E). E indicates the summing scale.

C—clears the scale to gross

T—tares the scale

P—initiates a print command

Z— zeros the scale

S— selects a scale

U1— selects primary units

U2— selects secondary units

A Keyboard Tare can be entered by preceding the "T" with a numeric value. For example,

10.5T enters a Tare value of 10.5. If there is no preceding numeric value, "T" causes a

Pushbutton Tare.

If Bar Code In is Selected

This connection type is used for input of serial data (requested from a prompt list step)

The prompt list response source, configured in the Memory program block, must be

Serial or Both. Refer to Appendix 1 for more information. N(o) additional parameters

need to be configured.

If Keyboard In is Selected

This connection is used to receive serial characters emulating keyboard input. Refer to

Appendix 1 for more information. N(o) additional parameters need to be configured.

If Custom Print from Template is Selected

This connection directs the serial port to output the selected characters and information

from the corresponding template (Templates 1 though 5). This selection differs from the