Motorola ACE3600 RTU - Page 213

Expansion Module
17-12
LED Name Description Status
MERR Main CPU
Error Logger Status LED
Bicolor LED (Red, Green)
OFF – No new errors or warnings logged in
main CPU.
Green – New message logged.
Orange – New warning logged.
Red – New error logged.
Note: In systems with I/O expansion, all error
messages from I/O expansion frames are
periodically collected by the main CPU and
saved with the main frame error messages.
When an error message is logged in either the
main frame or I/O expansion frames, the ERR
LED is lit on the main CPU front panel and
the MERR LEDs are lit on all expansion
modules. When the messages are cleared, the
ERR/MERR LED(s) are turned off.
RST Reset LED
Bicolor LED (Red, Green)
Green – On startup
OFF – Successful power-up or restart.
Red – Power-up or restart failed.
MCOM Main CPU
Communication LED
Bicolor LED (Red, Green)
Red – Slow blink – Expansion Loader looking
for main CPU (discovery).
Red – Fast blink – Expansion Loader loading
image.
Red – Expansion module firmware initializing
image.
Green – Slow blink - Expansion module
registered with main CPU.
Green – Fast blink – Expansion module
ready. (If this occurs after connection was
established – solid green, it is a sign that the
Expansion module is disconnected from the
main CPU.)
Green – Solid – Expansion module
connected.