Installation guide

LMU Users Guide

V1.0.6 December 10 2009

- 81 - CalAmp Proprietary & Confidential

11.1.2 SMS Text Status Message

The Text Status message was designed to help installers or support personnel to easily

determine the state of an LMU using SMS. The message contains several key status

indicators including Comm Status, GPS Status, Inbound Address and input states. Its format

is as follows:

APP: <App ID> <Firmware Version>

COM:<RSSI> [./d/D][./a/A][./L][IP address] [<APN>]

GPS:[Antenna <Short/Open/Off>] | [No Time Sync] |

[<FixStatus> <Sat Count>]

INP:<inputs states> <vehicle voltage>

MID:<mobile ID> <mobile ID type>

INB:<inbound IP address>:<inbound port> <Inbound

Protocol (LMD/LMX)>

• APP:

o <App ID>:

The Application ID value of the LMU indicating the host platform and the

wireless networking technology of the LMU.

o <Firmware Version>:

The current firmware version in use by the LMU

• COM:

o <RSSI>:

This is the signal strength the wireless modem sees from the network. In

general the LMU is at least scanning for the network if the RSSI is not -113.

o [./d/D]:

If the character ‘D’ is present, it indicates the LMU had a data session

established when it responded to the status request. For the 8-Bit product

line an upper case ‘D’ indicates both the Inbound and Maintenance sockets

are ready. The lower case ‘d’ indicates that only the Maintenance socket is

ready. A ‘.’ indicates no sockets are ready.

o [./a/A]:

This field indicates if the LMU has received an Acknowledgement from the

Inbound server. This field will be empty if the LMU has never received an

ACK.The lower case ‘a’ will be present if it has received an ACK since the

last cold boot (i.e. power cycle) but not the last warm boot (App Restart or

Sleep). The upper case ‘A’ will be present if the LMU has received an ACK

since the last warm boot. A ‘.’ Indicates no acknowledgement has been

received.

o [./L]:

This field indicates if the LMU’s log is currently active. An ‘L’ indicates that

the log is currently in use (i.e. one or more records have been stored) where a

‘.’ indicates the log is inactive.

o [IP Address]:

This is an optional field if and is only present if the LMU has established a