Siemens SIMATIC S7-400 Reference Manual page 53

LED
BAF
H
D
H
D
H
D
D = LED is dark; H = LED lights up;
S7-400 Automation System Module Data
Reference Manual, Ausgabe 11/2016, A5E00850736-08
LED LED
BATT1F BATT2F
H D Battery 1 empty or missing
No external backup voltage
available (short-circuit or over‐
load)
H D Battery 1 empty or missing
Battery has been stored for too
long
External backup voltage avail‐
able
D H Battery 2 empty or missing
No external backup voltage
available (short-circuit or over‐
load)
D H Battery 2 empty or missing
Battery has been stored for too
long
External backup voltage avail‐
able
D D Both batteries in order.
No external backup voltage
available (short-circuit)
D D Both batteries in order.
External backup voltage avail‐
able
3.5 Fault/Error messages via LEDs
Cause of fault
Insert new battery in compartment 1.
Press FMR button.
● Fault after plugging in a module:
● Fault after switching on: Remove
Insert new batteries in compart‐
ments 1 and 2 Press FMR button.
Depassivate battery (see
Manual ).
Insert new battery in compartment 2.
Press FMR button.
● Fault after plugging in a module:
● Fault after switching on: Remove
Insert new batteries in compart‐
ments 1 and 2 Press FMR button.
Depassivate battery (see
Manual ).
● Fault after plugging in a module:
● Fault after switching on: Remove
Power supply modules
Remedy
Plugged-in module defective
all modules and plug in
individually
Installation
Plugged-in module defective
all modules and plug in
individually
Installation
Plugged-in module defective
all modules and plug in
individually
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