Siemens SIMATIC ET 200S - LED Display on the EM 1 SSI

Commissioning and Diagnostics
6-17
ET 200S Distributed I/O System
EWA-4NEB 780602402-12
1SSI
SF
7
UP
DN
LEDs
DN 7
Meaning Remedy
on
No parameter
assignment. There
is a diagnostic
message.
Check the parameter
assignment. Evaluate
the diagnostic
information.
on
At value change
from smaller to
larger sensor
values (including
zero-crossing)
At value change
from larger to
smaller sensor
values (including
zero-crossing)
SF
on
UP
on
DI (latch)
activated.
At comparator
result CMP 1
Status indicator
change in
sensor value
(green)
Status
indicator for
digital input
(green)
Group
error (red)
CMP
on
CMP
Status
indicator
result of
comparis
on
Figure 6-12 LED display on the EM 1SSI
1STEP 5V/204kHz
SF
3
REF
RDY
LEDs
RDY 3
Meaning Remedy
on
No parameter
assignment. There
is a diagnostic
message.
Check the parameter
assignment. Evaluate
the diagnostic
information.
on
REF activated
If parameters were
assigned to the
module correctly
and pulse enable
has been
activated.
SF
on
REF
on
DI activated
When a
positioning
operation is
running
Ready for
positioning
job (green)
Status
indicator for
digital input
DI (green)
Group
error (red)
POS
on
POS
Positionin
gin
operation
(green)
Status
indic. for
digital
input
REF
(green)
Figure 6-13 LEDs on the EM 1STEP 5 V/204 kHz