3 Commissioning
3.6 LED indicators
64 Modular PLCs XControl: XC-104-…, XC-204-…, XC-303-… 01/23 MN050005EN Eaton.com
Table 10 LED status display
Status
LED
Description
red green orange
PLC
– – – RuntimeSystem not started
• No power on X6
– Flashes – Communication
– ON – PLC RuntimeSystem started
ON – – Error status of the RuntimeSystem
• Hardware Error
• Checksum Error
• Could not start SSL connection
Fix: Check the log file
ON ON – RuntimeSystem has started and is signaling an error condition.
PRG – – – No application on device
– ON – Application running
Flashes – Communication (green blinking)
ON Flashes – Application stopping; program signaling error condition
Because of the following, for example:
• Unsuccessful data access
• Task interval time > Watchdog time
– Flashes – Application stopping
SD
– – No MicroSD memory card detected
ON – MicroSD memory card detected
USB – – – No USB Host detected
– ON – USB Host plugged in
– – ON XC-204-…, XC-104-…: Current access operation on storage
device.
RS485
– – –
– ON – Communication channel open
– Flashes – Bus activity
CAN1
CAN2
– – – No bus activity
– Flashes – Bus activity OK (CAN), FLASHES with every frame
ON – – Bus error
Flashes Flashes – Warning
red green orange
ETH0…ETH2 – – – No active connection
– ON – Active connection
– ON Flashes Active connection and data being received or transmitted
Ethernet Activity – – – Ethernet communication / link status
– ON –
– – ON
– ON ON
1) Flashes: The flashing frequency can vary depending on the transfer rate on the bus.
When there are large volumes of data, the flashing will look like a solid green light on the LED.
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