Siemens SIMATIC S7-1500 System Manual page 195

①
Regarding : CPU status information
The following table shows the CPU status information that can be retrieved via the display.
Table 12- 1
C olor and icons for the
sta tus data
Green
Orange
Red
White
Automation system
System Manual, 09/2016, A5E03461182-AD
CPU status information
Me aning
RUN
STOP
•
STOP - firmware update
•
FAULT
Connection established between CPU and display.
•
Protection level configured.
At least one interrupt is active in the CPU.
•
No SIMATIC memory card inserted in the CPU.
•
The serial number to which a know-how-protected block is bound, does
•
not match the serial number of the CPU or the SIMATIC memory card.
No user program loaded.
•
Force job is active in the CPU.
F-capability activated. Safety operation active (for fail-safe CPUs)
The symbol is grayed out when safety mode is deactivated.
Fail-safe CPU (for fail-safe CPUs).
CPU display
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