AL4002
Remote I/O module 16 DI
18
7 Operating and display elements
7.1 LEDs
2 3
4
5
8
1
4
5
6
6
6
6
6
6
6
6
7
7
7
7
7
7
7
7
1:
status: RDY
2:
status: BF
3:
status: SF
4:
PROFINET: LNK
5:
PROFINET: ACT
6:
process connection: DI1
7:
Process connection: DI2
8:
voltage supply: US
7.1.1 Status
LED
Description
Colour
State
Description
RDY
Gateway status
-
Off
Not active or reboots
Green
Flashes 3 s (1 Hz)
DCP signalling service initiated via fieldbus
Flashes (5 Hz)
Error
Flashes (200 ms
on, 800 ms off)
Firmware update running
On
OK
Red
On
Error during firmware update (e.g. firmware not compatible)
BF
PROFINET connec-
tion status (bus fail-
ure)
Red
Off
No error
Flashes (2 Hz)
No data transmission
On
• No configuration or
• physical connection with low speed or
• no physical connection
SF
System status (sys-
tem failure)
Red
Off
No error
Flashes 3 s (1 Hz)
DCP signalling service initiated via fieldbus
On
• Watchdog expired or
• channel diagnosis, general or extended diagnosis
available or
• system error
7.1.2 Ethernet
LED
Description
Colour
State
Description
LNK
Status of the con-
nection
Green
Off
no Ethernet connection
