3.5.7
Diagnostics LEDs for optical connectors "F" (yellow LED)
You will find the diagnostics LEDs only on the devices with the IRT function. With the SCALANCE
XF204-2BA IRT you will only find the diagnostics LEDs on bus adapters with SCRJ ports.
The status of the optical connectors is indicated by an additional yellow LED per connector. The
LEDs signal the following statuses:
LED color
LED status
Meaning
Yellow
Lit
Check the plug-in connection and the quality of the fiber-optic cable. If necessary, re‐
place the parts.
-
Off
Relevant only if the link exists. The existing link power margin is adequate for error-free
operation.
3.5.8
Show Location
Localizing an IE Switches X-200
To identify an IE Switch X-200 locally and with certainty, you can use the "show location"
function on a programming device to select the node over the network and make it flash. This
can be used, for example, when assigning addresses to make sure that the correct node receives
the address. All port LEDs of the addressed node flash green at 2 Hz.
Description of the device
3.5 The LEDs
SCALANCE X-200
34
Operating Instructions, 11/2021, C79000-G8976-C284-15
