Topcon Apollo ISOBUS UT - ECU LED States; EM-24 Power, Transmit, and Receive LEDs

Chapter 12 – Apollo ECU Information
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LED state Power state
Flashing amber ECU power on
solenoid power off
VCB solenoid power off
sensor power off
Red ECU, solenoid, VCB solenoid or sensor power fault
solenoid and VCB solenoid power off
affected sensor supplies off
an alarm is triggered
12.1.2. Transmit LED
LED state Communication state
Flashing
green
This indicates that the control processor is executing the application
firmware.
Flashing red If the LED is OFF, this indicates that the boot loader is running.
12.1.3. Receive LED
LED state Communication state
Flashing green Communicating with master. No CAN faults.
Amber No communication with master. No CAN faults.
Flashing
amber
Communicating with master. CAN is operating in error passive
mode.
Red No communication with master. CAN bus fault (bus off).
12.1.4. ECU Status LED
LED state ECU state
Green Control output (PWM and relay) allowed. No Power, communication
or ECU configuration faults.
Amber Control output is inhibited. No faults are active. For example: 'drive
enable'.