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2
Table 2-1
Local diagnostic and status indicators
D
Green LED
OFF:
Flashing at 0.5 Hz:
Flashing at 4 Hz:
ON:
FS
Red LED
Flashing at 1 Hz:
ON:
2-10
2.9
Local diagnostic and status indicators
D
0
1
2
IN 1
R
D O
P S
Figure 2-4
Local diagnostic and status indicators on the IC220SDL840 module
Function identification: Dark red
Diagnostics
Communications power not present
Communications power present, local bus not active
Communications power present, error at the interface between previous and
flashing terminal (the terminals after the flashing terminal cannot be addressed).
(E.g., loose contact at the bus interface, terminal before the flashing terminal has
failed, another terminal was snapped on during operation (not permitted))
Observe the module startup time of approximately 16 s. During this time the D LED flashes
at 4 Hz and the bus cannot be started up.
Communications power present, local bus active
Failure state
Device not parameterized or parameterization was not accepted
Hardware fault
Communication to safe controller disabled and output driver enable reset
User manual IC220SDL840 - May 2018
D
1
0
2
IN1
F S
1
1
2
I N 2
P
FS
1
1
2
IN2
P
77221002
GFK-2734
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