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ABB EQmatic
Device technology
2.4
Display elements
Indicator LEDs are located on the front of the device.
The behavior of the display elements is described in the following table:
LED
LAN/Link
M-Bus/
Modbus
18 2CDC512090D0202 | QA/S x.yy.1
Function
ON
OFF
FLASHING (1 Hz)
ON
FLASHING (3 Hz)
FLASHING (10 Hz)
OFF
FLASHING
ON
OFF
FLASHING (1 Hz)
RTU
FLASHING (3 Hz)
FLASHING (10 Hz)
Description
Operating system initialization complete. Supply voltage present.
The device is ready for operation.
No supply voltage. During operating system initialization.
During initialization.
Network settings reset and device restart.
Factory reset; internal error.
No supply voltage. No network connection.
Network connection OK. Telegram traffic.
Supply voltage OK, device ready for operation and M-Bus/RS-485 Modbus RTU-
Bus is connected.
No supply voltage. M-Bus/RS-485 Modbus RTU not connected.
Scanning process for slaves/devices.
Network settings reset and device restart.
Factory reset.
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Troubleshooting
