Siemens SIDOOR ATD401W System Manual page 123

LED signals
The following five status LEDs are available on the PROFIBUS module:
LED Color Description
H1 Green Relay K1 picked up
LED H1 switches on when the controller has detected the
CLOSED position and the pulse generator ceases to out-
put pulses. The LED H1 is controlled by the basic module
(signal X200.11).
H2 Green Relay K2 picked up
LED H2 switches on when the current distance of the door
to the OPEN position falls below 2 cm and the relay has
switched on. The LED H2 is controlled by the basic module
(signal X200.9).
H3 Green Valid incoming telegram
LED H3 is controlled by the basic module (signal X200.12),
and indicates the communication status. The LED flashes
to indicate incoming, valid telegrams. Each signal change
stands for such a telegram.
H400 Red "Bus error" PROFIBUS communication disrupted
The H400 LED flashes red in the event of PROFIBUS
communication errors.
H401 Red "Group error" internal communication disrupted
The H401 LED flashes red in the event of internal commu-
nication errors. Extended PROFIBUS diagnostic data is
being transferred
H402 Green Power on
LED H401 lights a continuous green after Power on.
H403 Yellow Internal communication to main controller
LEDs H403 and H404 toggle each time after the master
H404 Yellow
has sent or received an error-free telegram.
H405 Yellow Boot
H700 Orange P5V_ISO (X705.6) = OK
H701 Yellow P5V = OK
ATD4xxW Door Controller for Industrial Applications
System Manual, 01/2017, A5E38080677-AB
4.5 Relay and fieldbus interfaces
Position
Controllers
123