S&C Instruction Sheet 461-509 87
Appendix A
Figure 77. LED indicator lights.
Gateway Controller
Module Indicator
Lights
Blue LED: The gateway controller module is connected to power.
Orange LED: This is the “Heartbeat LED.” This LED indicates various stages during the
module’s Startup sequence. When the module is rst powered on, the orange LED will
be off for 15 seconds and then on for 10 seconds. When the module starts initializing, the
orange LED will blink rapidly for 2 seconds (8 blinks) and then stay off for 3 seconds.
When initialization is complete, it blinks for 4 seconds (4 blinks) and stays off for 1 second.
Yellow LED: Always On. Reserved for future use.
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