Siemens SIMATIC ET 200SP Manual page 27

Operating mode DI
3.3 Interrupts/diagnostics alarms
DIAG LED
Table 3- 2
DIAG LED
Channel status LED
Table 3- 3
Channel status
CNT LED
Table 3- 4
26
DIAG LED fault/error display
Meaning
Backplane bus supply of the ET 200SP not OK
Off
Module parameters not assigned
Flashes
Module parameters assigned and no module diagnostics
On
Module parameters assigned and module diagnostics
Flashes
Status display of the channel status LED
Meaning
LED
Process signal = 0
Off
Process signal = 1
On
Status display of the CNT LED
CNT LED Meaning
Counting operating mode disabled
Off
Counting operating mode enabled
On
Digital input module DI 8x24VDC HS (6ES7131-6BF00-0DA0)
Equipment Manual, 11/2019, A5E35243810-AD