Diagnostics; Diagnostics Using The Led Display - Siemens SIMATIC ET 200S Operating Instructions Manual

1SSI

4.9 Diagnostics

4.9 Diagnostics
4.9.1

Diagnostics using the LED display

LED display on the 1SSI
①
②
③
④
Status and error displays by means of LEDs on the 1SSI
The table below shows the status and error displays on the 1SSI.
SF
On
254
1
3
Group error (red)
Status display for change in sensor value (green)
Status display for result of comparison
Status display for digital input (green)
Event (LEDs)
UP DN CMP 7
On
On
On
On
2
4
Cause
No parameter assignment.
There is a diagnostic
message.
At value change from smaller
to larger sensor values
(including zero-crossing)
At value change from larger
to smaller sensor values
(including zero-crossing)
Set for comparison result
CMP 1
DI (latch) is activated.
Operating Instructions, 06/2010, A5E00124867-07
Remedy
Check the parameter
assignment. Evaluate the
diagnostics data.
Technological Functions