Contents, cont'd. - Intermec

OPEN
Chapter 2 Program Instructions
Field of Application Statement for opening a file or device – or creating a new file – for input,
output or append, allocating a buffer and specifying the mode of access.
Syntax OPEN [FOR ´ ´ ] AS [#][LEN=]
is the file or device to be opened, of the file to becreated. File
names must not contain any colon character (:).
# indicates that whatever follows is a number. Optional.
is a designation number for the OPENed file or device.
is, optionally, the length of the record in bytes (default 128
bytes).
Remarks An OPEN statement must be executed before a file or device can be used for
input, output and/or append. A maximum of 25 files and/or devices can be
open at the same time.
Sequential Access Mode:
The access mode can optionally be specified as sequential INPUT, OUTPUT
or APPEND:
INPUT Sequential input from the file/device, replacing existing
data. Existing files/devices only.
OUTPUT Sequential output to the file/device, replacing existing
data.
APPEND Sequential output to the file/device, where new data
will be appended without replacing existing data.
Random Access Mode:
If no access mode is specified in the statement, the file/device is opened for
both input and output (RANDOM access mode). FIELD, LSET, RSET, PUT
and GET can only be used on records in files OPENed in the RANDOM
access mode.
Please refer to the DEVICES statement for information on which devices can
be opened for the different modes of access.
Lists of the files stored in the various parts of your printer's memory can be
obtained by the use of the FILES statements.
Electronic Keys:
Each key circuit may contain a number of “key items”. There are two types
of key items:
• Lock (device "lock:")
• Storage (device "storage:")
Each key item has a file name consisting of max. 4 characters, usually
appended by a password. The password consists of a delimiter character (?)
indicating the password followed by the actual password (max. 4 characters).
Failure to include the correct password (if such is required) in the file name
will result in an error.
Intermec Fingerprint 7.2 – Reference Manual Ed. 3 165