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Dynamic Form: Field Length
Purpose
Assigns a field length to each variable field in a boilerplate
dynamic form.
Format
(cc) t length (cc)-
(cc)
t
length
(cc)-
Comments
This Dynamic Form: Field Length command is supplied as part of
the data within the Dynamic Form command. The length is
assigned to a variable field at the current position based on all
other commands and data within the Dynamic Form command.
For example, if alphanumeric commands are input followed by a
tab followed by this length command, the length is assigned
beginning at the position after the alphanumeric command and
tab are executed.
Each variable field in a boilerplate dynamic form must have a field
length assigned. The field length specifies how many data bytes
are required to fill the field. For example, a form might have a
variable field called "quantity" which could be specified as three
data bytes. VGL would then expect three data bytes supplied
dynamically to fill that field.
Following the completed Dynamic Form command, the data is
sent and the forms are processed. The data is sent in the order of
the variable fields. The first data sent fills the first variable field;
the second data sent fills the second variable field, etc. The data
must be the same length as the field or special dynamic form
commands (CR, LF, FF explained on page 66) must be used to
fill the field.
Dynamic Form Commands
Represents the Special Function Control Code
(SFCC). Enter the specific SFCC for your VGL
configuration.
Specifies the Dynamic Form Field Length
command. Enter [ or { to designate a field length
follows.
Represents the field length. Enter a three-digit
number to inform VGL how many data bytes are
expected to fill a certain variable data field. Each
variable data field on the form must have an associ-
ated field length.
Graphics Mode CR used as a sequence terminator.
Enter the SFCC for your VGL configuration
immediately followed by - to end the command
sequence.
67
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