Zebra ZKDU Guide de l'utilisateur télécharger pdf (Page 35)

ZPL ZKDU System

Unique ZKDU ZPL Features

6/4/2013 ZKDU User’s Guide P1059693-001Rev. A

ZKDU Internal Forms Processing Memory

The ZKDU has 1024 bytes reserved for ZPL form variables prompts and operator input

data in the ZKDU. The memory is filled with operator prompts from one end and the

operator responses to the prompts are stored starting at the opposite end. Form prompts

get stored first, then as the form is run, the operator input data is sent to the printer and the

ZKDU memory.

If the available memory for storing all of a form’s variable and their prompts is exceeded,

then it will display the following error message:

The total number of bytes used to store variables (and their prompts) of a ZPL form in the

ZKDU is the total number of characters in the prompt plus seven bytes overhead. Each

character is equal to a byte of data. If each prompt in a ZPL form were twenty (20)

characters, then a total of 37 variables can be supported, i.e. (20 + 7) x 37 = 999 bytes

which is less than the 1024 max. bytes of ZKDU temporary form storage.

Left over memory from variable prompt (and pointer) storage is used for storing the

operator input data (responses to prompts). This input data is used to pre-populate operator

responses for subsequent form print entries. If 1024 bytes are exceeded during data entry,

the ZKDU will clear the oldest previous value entered and continue the data entry process

and store the new value. If the new value exceeds the storage limit, then the value will not

be saved for the next iteration of the form.

ZPL Commands for Operator Interactive Print Forms

The following ZPL commands can be used to add operator prompts and variable data to

control print output with the ZKDU.

• ^PQ - Command: Print Quantity - Controls print quantities (sets) and number of

reprints (copies of each set member)

• ^FN - Command: Field Number - Identifies data input variables and provides user

prompts

• ^SN - Command: Serialization Data - Used to provide alpha-numeric incrementing

or decrementing data fields. Starting index (count) values must be build into the

form’s format, it can not be added as a variable using the ^FN command.

• ^FV - Command: Field Variable - Do Not Use In ZKDU Form. ^FV is designed

for use with process chained forms.

1 2 ... 30 31 32 33 34 35 36 37 38 39 40 41 42

Pas de commentaire

Zebra ZKDU Guide de l'utilisateur Page 35