Specifications

CC-Link Head Station STL-BT1 (CC-Link)
3 - 4
MITSUBISHI ELECTRIC
3.2.3 Display Elements
* The state of the CC-Link communication is displayed by the four LEDs L.RUN, L.ERR, SD and RD. Detailed fault messages
are indicated with a blink code of the IO LED. Please refer to the manual of the STL-BT1 for a detailed description of these
LEDs.
Fig. 3-5: The operating condition of the head
station is signalled via LEDs.
LED Color Status Description
L.RUN Green ON Data link is being executed.*
L.ERR Red
ON Communication error (host).*
Flickering Switch type setting was changed while power was ON.*
SD Green ON Data is being transmitted.*
RD Green ON Data is being received.*
IO
Green
ON Node operation*
Blinking Waiting for initial data*
Red Blinking
앫 Start up
앫 Faults occurring*
AGreen
ON System supply is ok.
OFF System supply failed.
BGreen
ON Field supply (power jumper contacts) is ok.
OFF Field supply failed.
Tab. 3-1: Description of the LEDs of the STL-BT1
A
C