Setup
Status Indicators
EPOS4 Disk 60/8 Hardware Reference
CCMC | 2021-10 | rel10276
3-49
3.6.1 NET Status
The LEDs (Figure 3-32; A) display the actual status and possible errors of the EPOS4 in respect to the
NET network:
• Green LED shows the RUN state
• Red LED indicates errors
Table 3-66 NET Status LEDs
3.6.2 Device Status
The LEDs (Figure 3-32; B) display the actual status and possible errors of the EPOS4:
• Green LED shows the status
• Red LED indicates errors
Table 3-67 Device Status LEDs
LED
Description
Green Red
OFF — EPOS4 is in state INIT
Blink — EPOS4 is in state PRE-OPERATIONAL
Single flash — EPOS4 is in state SAFE-OPERATIONAL
ON — EPOS4 is in state OPERATIONAL
Flicker — EPOS4 is in state BOOTSTRAP
— OFF EPOS4 is in operating condition
— Double flash
An application watchdog timeout has occurred
Example: Timeout of Sync Manager Watchdog
— Single flash
EPOS4 has changed the COM state due to an internal error
Example: Change of state “Op” to “SafeOpError” due to Sync Error
— Blink
General Configuration Error
Example: State change commanded by master is not possible due to
actual settings (register, object, hardware configuration)
Blink = continuous blinking (≈2.5 Hz)
Flash = flashing (≈0.2 s), followed by pause of 1 s
Flicker = continuous flickering (≈10 Hz)
LED
Description
Green Red
Slow OFF
Power stage is disabled. The EPOS4 is in status…
• “Switch ON Disabled”
• “Ready to Switch ON”
• “Switched ON”
ON OFF
Power stage is enabled. The EPOS4 is in status…
• “Operation Enable”
• “Quick Stop Active”
OFF ON
FAULT state. The EPOS4 is in status…
•“Fault”
ON ON
Power stage is enabled. The EPOS4 is in temporary status…
• “Fault Reaction Active”
Flash ON No valid firmware or firmware download in progress
Flash = flashing (≈0.9 s OFF/≈0.1 s ON)
Slow = slow blinking (≈1Hz)