Installation guide

LMU Users Guide

V1.0.6 December 10 2009

- 8 - CalAmp Proprietary & Confidential

Parameters. The LM Direct™ Parameter Message is described in the LM Direct™

Reference Guide. The SMS Parameter Message is described later in this document.

3.1.2.1 AT Commands

The AT$APP PARAM commands can be used to query or set Parameter Values. The set

command generally looks like:

AT$APP PARAM <ID>, <index>, <value>

It should be noted that there can be more than one <value> field depending on the

Parameter’s definition. Each sub-Value is separated by a comma.

The query command takes two forms, query for a single Value of a specific Index or query

for all Values.

To query a specific Value, you need to reference which Parameter Index you are looking for.

The command would look as follows:

AT$APP PARAM? <ID>,<index>

If the <index> field is not provided, the LMU will responds with the 1

index (i.e. index 0).

The response will look like:

To query all Values of a Parameter a wild card character is used in place of the Index. This

command would look as follows:

AT$APP PARAM? <ID>,*

The response will look like:

. . .

For Parameters with a large number of Indices, such as the event list, it may not be possible

to display all Parameters.

Like the programming command there may be more than one <value> field for a given

parameter. Each value is separated by a comma. The one exception is masks. Mask values

are not displayed in the query response but they are required in the programming command.

Masks are discussed later in this document.