Siemens ET 200S - Page 141

Commissioning and Diagnostics
6-17
Distributed I/O System ET 200S
EWA 4NEB 780 6024-02 07
1SSI
SF
7
UP
DN
LEDs
DN 7
Meaning What to Do
On
No parameter as-
signment. There is
a diagnostic mes-
sage.
Check the parameter
assignment. Evaluate
the diagnosis.
On
At value change
from smaller to lar-
ger sensor values
(including zero-
crossing)
At value change
from larger to
smaller sensor va-
lues (including
zero-crossing)
SF
On
UP
On
DI (latch) activated
At comparator re-
sult CMP 1
Status indicator
change in sensor
value (green)
Status indi-
cator for digi-
tal input
(green)
Group
error (red)
CMP
On
CMP
Status in-
dicator re-
sult of
compari-
son
Figure 6-12 LEDs on the EM 1SSI
1STEP 5V/204kHz
SF
3
REF
RDY
LEDs
RDY 3
Meaning What to Do
On
No parameter as-
signment. There is a
diagnostic message.
Check the parameter
assignment. Evaluate
the diagnosis.
On
REF activated
If parameters were
assigned to the mo-
dule correctly and
pulse enable has
been activated
SF
On
REF
On
DI activated
When a positio-
ning operation is
running
Status
indicator
for digital
input
REF
(green)
Status indi-
cator for digi-
tal input DI
(green)
Group
error (red)
POS
On
POS
Positio-
ning in
operation
(green)
Ready
for posi-
tioning
job
(green)
Figure 6-13 LEDs on the EM 1STEP 5V/204kHz