Status And Error Information In The Process Image Input (Pii) - Siemens SIMATIC S7-1500 Manual

Configuration / address space

5.3 Status and error information in the process image input (PII)

More information
You can find more information on the diagnostic messages in section Diagnostic messages
(Page 41).
5.3 Status and error information in the process image input (PII)
Status byte 0 provides information regarding the validity of the processed data and the status
of the module.
If the processed data is invalid ("value status", bit 0 of the status byte is 0), error byte 1
provides additional information on the cause.
Additional information for "bit 0"
The value status is also "0", during startup of the module and in the event of an overload on
the Ethernet interface of the module.
You can find more information regarding an overload on the Ethernet interface in section
Effects of a high network load (Page 44).
Status information in the IB n
The figure below shows the assignment of the status bytes in the PII.
①
②
③
④
⑤
⑥
⑦
⑧
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Bit 0: Value status bit: Error at module, data invalid
Bit 1: Ethernet link status
Bit 2: USB link status, like: Ethernet link status
Bit 3: Application is active, MicroPython script is running
Bit 4: Debug mode active, indicates whether MicroPython debug mode is active
Bit 5: GigE Vision connection established
Bit 6: Reserved
Bit 7: Reserved
Technology Module TM NPU
Equipment Manual, 07/2023, A5E46384784-AC