Installation guide

LMU Users Guide
V1.0.6 December 10 2009
Copyright ©CalAmp DataCom Inc 2009
- 19 - CalAmp Proprietary & Confidential
4.5
4.5.1 Configuring the Input Wake-Up Monitor
Working with Sleep Mode
The LMU’s digital inputs have an additional feature besides simple On/Off detection which
is to wake the LMU out of its sleep mode. The LMU is capable of filtering which input(s)
can wake it from sleep based on Parameter 1029. Like S-Registers 157 and 158, each bit of
Parameter 1029 is associated with a specific input. If the bit associated with that input is set,
then the LMU will wake up on any high to low or low to high transition of that input. If the
bit is cleared, the LMU will ignore any transitions for that input while it is sleeping.
A host device can also be used to wake the LMU from sleep via a wired serial connection
using the Serial Cable, ioPOD or TetheredLocator adapters. The LMU must also be set
NOT to power down its expansion port while sleeping. The LMU cannot be woken using
the Bluetooth Adapter, nor can it be woken remotely.
The bit mappings for the Wake-Up Monitor are as follows:
Input
Bit
S-Register Mask
Ignition/Input 0
0
Input 1
1
2
Input 2
2
4
Input 3
3
8
Input 4
4
16
Input 5
5
32
Input 6
6
64
Input 7
7
128
How the LMU enters sleep and how to monitor for wake up events is discussed in the PEG
Programming Guide. Please refer to that document for details.