Siemens SIMATIC ET 200S Manual page 152

Commissioning and Diagnostics
1SSI
SF
Group
error (red)
DN
UP
Status indicator
change in sensor
value (green)
7
CMP
Status indi- Status in-
cator for digi- dicator re-
tal input sult of
(green) compari-
son
Figure 6-13 LEDs on the EM 1SSI
1STEP 5V/204kHz
SF
Group
error (red)
RDY
REF
Status in-
Ready
dic. for digi-
for posi-
tal input
tioning
REF
job
(green)
(green)
3
Status indi- Positio-
cator for digi- ning in
tal input DI operation
(green) (green)
Figure 6-14 LEDs on the EM 1STEP 5V/204kHz
6-18
LEDs
SF UP DN
On
On
On
On
LEDs
SF REF RDY 3
On
On
On
POS
Meaning
7 CMP
No parameter as-
signment. There is a
diagnostic message.
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)
DI (latch) activated
At comparator re-
sult CMP 1
On
Meaning
POS
No parameter as-
signment. There is a
diagnostic message.
REF activated
If parameters were
assigned to the mo-
dule correctly and
pulse enable has
been activated
On
DI activated
On
When a positio-
ning operation is
running
What to do
Check the parameter
assignment. Evaluate
the diagnosis.
What to do
Check the parameter
assignment. Evaluate
the diagnosis.
ET 200S Distributed I/O System
EWA-4NEB780602402-09