Siemens Simatic S7-1500 CPU 1512C-1 PN - Interrupts and Diagnostics; Interrupts and Diagnostics of the CPU Part

Interrupts/diagnostics alarms
6.2 Interrupts and diagnostics
CPU 1512C-1 PN (6ES7512-1CK01-0AB0)
134 Manual, 12/2017, A5E40898741-AA
CHx LED
Table 6- 8 CHx status display
CHx LED
Meaning
Remedy
Off
0 = Status of the input/output signal. ---
On
1 = Status of the input/output signal. ---
Note
For the status display, the digital inputs only take into account the filter time of the
corresponding DI and not the filter time of the A/B/N signals of the f
ast counters (HSC).
For example, a static signal may be displayed when the DI has a configured input delay of
3.2
ms, even though a 100 kHz counter on these inputs still detects edge transitions.
6.2
Interrupts and diagnostics
6.2.1
Interrupts and diagnostics of the CPU part
For information on the topic of "Interrupts", refer to the STEP 7 (TIA Portal) online help.
For information on "Diagnostics" and "System alarms", refer to the Diagnostics
(http://support.automation.siemens.com/WW/view/en/59192926) function manual.