INSTEON Hub: Developer’s Guide
Page 11 © 2013 INSTEON
IM Power-up and Reset States
This section describes the IM Power-up Behavior
11
and the IM Factory Reset State
11
.
IM Power-up Behavior
The table below shows the state of the IM when it powers up. Holding down the SET Button while
powering up will cause a factory reset.
LED Indication Meaning
LED on steadily The IM detected an external EEPROM (up to 32 Kb) for storage of database
links. Effective with product revisions 2.75 or greater, a 128Kb EEPROM is
included for storage of database links
LED blinks six times The IM did not detect an external EEPROM, so it will use the internal
EEPROM in the processor chip. A maximum of 31 ALL-Links are permitted.
An attempt to add a 32
nd
ALL-Link will result in the 31
st
being erased.
LED off The user pressed and held the IM’s SET button for 10 seconds while powering
up, causing the IM to perform a factory reset and go into the IM Factory Reset
State
11
. At the conclusion of the reset, the IM’s LED will give one of the two
indications above. You will also receive a User Reset Detected
44
message
from the IM.
IM Factory Reset State
Resetting the IM to its factory default condition by holding down the SET Button for ten seconds while
powering it up or by sending it a Reset the IM
43
Command puts it into the following state:
IM Resource Factory Reset State
ALL-Link Database Erased (set to all zeros).
Host Device
Category, Device
Subcategory,
Firmware Version
Set to the original DevCat (0x03), SubCat (0x05), and firmware version hard-
coded into the IM’s firmware at the factory.
IM Configuration
Flags
Cleared (set to all zeros).
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