Tag Field Usage; Subtag Field Usage; Data Field Usage; Concatenation Of Multiple Commands - Datalogic POWERSCAN 7000 2D Imager Product Reference Manual

Menu Command Syntax

Tag Field Usage

When a query is used in place of a Tag field, the query applies to the
entire set of commands available for the particular storage table indicated
by the Storage field of the command. In this case, the SubTag and Data
fields should not be used because they are ignored by the device.

SubTag Field Usage

When a query is used in place of a SubTag field, the query applies only
to the subset of commands available that match the Tag field. In this
case, the Data field should not be used because it is ignored by the
device.

Data Field Usage

When a query is used in place of the Data field, the query applies only to
the specific command identified by the Tag and SubTag fields.

Concatenation of Multiple Commands

Multiple commands can be issued within one Prefix/Storage sequence.
Only the Tag, SubTag, and Data fields must be repeated for each com-
mand in the sequence. If additional commands are to be applied to the
same Tag, then the new command sequence is separated with a comma
(,) and only the SubTag and Data fields of the additional command are
issued. If the additional command requires a different Tag field, the
command is separated from previous commands by a semicolon (;).

Responses

The device responds to serial commands with one of three responses:
ACKIndicates a good command which has been processed.
ENQIndicates an invalid Tag or SubTag command.
NAKIndicates the command was good, but the Data field entry was out
of the allowable range for this Tag and SubTag combination, e.g., an
entry for a minimum message length of 100 when the field will only
accept 2 characters.
Product Reference Guide 10-3