Agilent Technologies Turbo-V 2K-G Notice De Mode D'emploi page 332

17 Technical Information
Profibus Option
Indicators
Two LEDs are present on the interface: one green and one red:


←---------------------------------------- 550 ms period------------------------------------------→
1 pulse
2 pulses
Blink fast
Blink slow
Blink slow
1 pulse
ProfiBus link established, controller link NOT established yet
(Controller state machine not in Regular data exchange). This
situation could be normal in the first 45 seconds after the interface
power on (Controller address searching phase) or after the controller
power-on.
2 pulses
ProfiBus link not established yet (ProfiBus state machine not in
Regular data exchange). This failure has priority (in the indication)
over the previous.
Blink fast
Gateway fail (internal check) or wrong address set (address > 0x7D
or address not stable during power-on).
Blink slow
Gateway operating properly.
332/360
the red led indicates that the interface is correctly powered;
the green led shows the interface status according the following
table:
Turbo-V 2K-G Pumping System User Manual / 87-900-968-01 (H)