Installation guide

LMU Users Guide
V1.0.6 December 10 2009
Copyright ©CalAmp DataCom Inc 2009
- 113 - CalAmp Proprietary & Confidential
the LMU-4100™ we simply can turn the modem off. We also need to make sure these
signals are routed from the trailer to the truck so they can be detected by the LMU-4100™.
14.2.2.2 Project Proposal – Local Application
This solution does not have a local application.
14.2.2.3 Project Proposal – Remote Application
The remote application here will be a stripped down version of what we used in the delivery
fleet solution. It will need to do the following:
• Receive LMU Event messages from the LMUs. This includes differentiating between
event codes.
• Acknowledge messages sent from the LMUs
The main workload for the remote application will be in the reporting engine. The engine
will need to be modified to create the reports necessary for this client. This could include
reports such as State Mileage for Gas Tax credit, empty trailer availability, truck availability,
etc.. It should also fire alarms when vehicles disregard safety procedures.
14.2.3 LMU Setup – Planning
The setup of the LMU-1000™ and LMU-4100™ boils down to two items, setting up the
Inbound and setting up the four inputs we will be using:
• Ignition On/Off detection
• Trailer connect and disconnect
• Trailer loading
• Trailer unloading
To support the inputs, we have created the following Input mappings for our solution.
Input
LMU-1000™ Use
LMU-4100™ Use
Ignition
N/A
Truck Ignition
Input 1
Load Hatch Open/Close
Load Hatch Open/Close
Input 2
Unload Hatch
Open/Close
Unload Hatch
Open/Close
Input 3
N/A
Trailer Detect
Input 4
N/A
Output 0
N/A
Load/Unload When On
On the Hatch events, a High signal indicates the hatch is open, and a Low signal indicates it
is closed. For the trailer detections, a High signal indicates that the trailer is not present,
where a Low signal indicates that it is.
Planning out the connections, our circuit would look similar to the following: