CalAmp LMU-5541 Hardware Installation Manual page 12

Hardware and installation manual (29 pages)

Table of Contents

LMU-5541 Hardware & Installation Guide

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 valid data session. This field will contain the current IP address of the

LMU as assigned by the wireless network. Note that if

you see a value of 192.168.0.0, this is an indication that the LMU has not been able to establish a data session.

o [<APN>]

The current Access Point Name in use by a GSM LMU.

GPS:

o [Antenna <Short/Open/Off>]:

This field, if present, indicates a problem with the LMU's GPS antenna. A value of Short indicates that the antenna cable has likely been crushed.

A value of Open indicates that the antenna cable is either

cut or disconnected. A value of Off indicates that the LMU' GPS receiver is off.

o [No Time Sync]:

If this field is present, it indicates that the LMU's GPS receiver has not been able to find even a single GPS satellite. This would likely been seen

in conjunction with the above antenna error, or if the LMU

GPS antenna is otherwise blocked.

o [<FixStatus> <Sat Count>]:

If these fields are present it indicates that the LMU has, or had a valid GPS solution. The <Sat Count> field indicates how many GPS satellites

are currently in use by the LMU. The <FixStatus> field

indicates the type of fix. The Fix Status types are detailed in the LM Direct Reference Guide.

INP:

o <input states>:

This field details the current state of each of the LMU's discreet inputs. This field is always 8 characters long. The left most character represents

the state of input 7 where the right most represents the state

of input 0 (i.e. the ignition). A value of 1 indicates the input is currently in the high state. A value of 0 indicates it is currently in the low state.

o <vehicle voltage>:

This field will contain the current reading of the LMU's internal A/D. This will be the supply voltage provided to the LMU in mV.

MID:

o <mobile ID>:

This will be the current mobile ID in use by the LMU.

o <mobile ID type>:

This will be the type of Mobile ID in use by the LMU. The available types are, Off, ESN, IMEI, IMSI, USER, MIN and IP ADDRESS.

INB:

o <inbound IP address>:

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LMU-5541 Hardware & Installation Guide

This is the current IP address in use by the LMU. This value should match the IP address of your LM Direct™ server.