7. Series 8 I/O Operations
7.4. Powering up the IOM
R500 Series 8 I/O User's Guide 213
April 2017 Honeywell
remains in this state until the IOLINK function block (C300) instructs it to change.
This is due to the fact that the C300 contains all of the IOM's configuration
information.
If the IOM was:
never previously loaded, the IOM:
remains IDLE with an invalid database.
previously was loaded, then
the C300 reloads the IOM, and restores it to the last state before power down
occurred.
Therefore, upon powering up the IOM:
any previously loaded channel blocks are reloaded and
the IOM and channel blocks are set to idle, or run as they were previously set before
the IOM lost power.
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