Balluff BTL266T, User Manual, Page: 26 / 95

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3
Construction and function (continued)
3.3 LED display
Fig. 3-2: BTL7 LED displays
3.3.1 LED 1: BTL status
LED 1 Operating state
Green Normal function
Magnet is within the limits.
Red Error
No magnet or magnet outside the limits.
Tab. 3-1: LED 1
LED 2
(Network
status)
LED 1
(BTL status)
LED 3
(Link/Activity
IN)
LED 4
(Link/Activity
OUT)
3.3.2 LED 2: Network status (dual LED)
LED 2
Red
Green Meaning Cause
Off Off Not switched on, no IP
address The device is either switched off or the device is switched on, but no IP
address was configured.
Off Flashing No connection The device has an IP address, but there is no connection to a master yet.
Off On Connected The device is connected with the master.
Flashing Off Connection time-out An existing connection was interrupted by a time-out.
On Off IP address conflict Another user on the network has an identical IP address.
Blinkend Flashing Self-test The device performs a self-test at startup. During the self-test, the LED
flashes red and green alternately.
Tab. 3-2: LED 2
3.3.3 LED 3 / LED 4: Link/Activity
LED 3/LED 4
Green
Status Connection
On Port open Yes
Off Port closed No
Tab. 3-3: LED 3/4
BTL7-V50D-M _ _ _ _ -P-C003
Transducer in a Profile Housing