Interfaces and signal lamps on the controller casing
Fig. 3: Controller casing
Status LEDs
No.
Colour
Name
LED
Description
1
Red
Error
LED on
Up to 3 s: Switch-on procedure. Permanently: Switch-on
procedure error
LED blinking
Error; for detailed diagnosis use EasyConnect software
LED blinking slowly
Undefined equipment function; for detailed diagnosis
use EasyConnect software
LED off
Normal operation; if no. 5 is also off
⇒
Equipment not
ready for operation
2
Yellow
Cable termina-
tion
LED on
Cable termination is active
LED off
Cable termination is inactive
3
Green
Not used
4
Yellow
Data reception
in progress
LED on
Data is being received from several controllers
LED on with brief inter-
ruptions
Data is being received from few controllers
LED off
No data reception from other devices
5
Green
Controller opera-
tion (heartbeat)
LED blinking slowly
Normal controller operation
LED flickering
Controller operation; PC communication with EasyCon-
nect configuration/diagnosis software
LED off
Device not ready
Product description
EASYLAB controller Serie TCU3
13
