Siemens Simatic CFU Commissioning Manual page 92

Diagnostics of the CFU
9.2 Diagnostics via LED displays
LEDs of the Compact Field Unit
The following LEDs are located on the front of the CFU.
Identification
①
LK1 and LK2
②
● PWR
● RN
● ER/MT
③
PS1 and PS2
④
DIQ0 to DIQ7
LED display on channel
(DIQ<n>)
⑤
FB0 to FB7
LED display on fieldbus con‐
nection (FB<n>)
Table 9-1
92
1 2 3
Color
Green
Green
Green
Red/yellow
Green
Red
Green or OFF
Red
Green
Yellow
Red
Legend for the following tables:
Off
* *
4 5
Meaning
LED for status display on the BusA‐
dapter
Power supply (Power)
Operating mode (RUN)
Error indication (Error/Maintenance)
Supply voltage PS <x> is available
Problem with supply voltage PS <x>
(missing or faulty)
Signal status 1 or 0
Error display (Error)
Field device connected and OK
Status display (Maintenance)
Error display (Error)
ON LED lit
Off LED not lit
* * Any status (not relevant)
Flashes Maintenance status (flashes)
Commissioning Manual, 07/2018, A5E39252870-AC
Brief description
Connection status
Diagnostics of the CFU
(LEDs on the interface
dome)
Power supply
Signal OK
Error
Field device connected
Maintenance necessa‐
ry or maintenance re‐
quired
Error
SIMATIC CFU