Siemens SIMATIC ET 200eco PN, Operating Instructions Manual

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7.4 Diagnostics messages of the I/O devices
Actions after a diagnostics message
Every diagnostics message triggers the following actions:
• The SF LED (red) of the I/O device lights up.
• Several simultaneous diagnostics messages are possible.
• Diagnostics data are reported as diagnostics interrupts and can be read from data records.
• Diagnostics messages are saved to the diagnostics buffer of the I/O controller.
• OB 82 is called. If there is no OB 82, the IO Controller goes to STOP.
• Acknowledgment of the diagnostics interrupt to enable new interrupts.
7.5 Diagnostics with STEP 7
7.5.1 Reading diagnostics data
Options for reading the diagnostics data
Table 7-7 Reading diagnostics data in STEP 7
Automation system
with
IO Controller
Block or register in
STEP 7
Application See ...
For example in HW
Config by selecting
Station > Open
Online
Device diagnostics in plain
text on the STEP 7 interface
(in the Quick View, Dia­
gnostics View or Module
Status windows) "Hardware diagnostics" in
the STEP 7 online help
SFB 52
"RDREC" Reading data records from
the IO Device SFB, see STEP 7 online help
(System functions/System
function blocks)
SIMATIC S7
SFB 54
"RALRM" Receiving interrupts from the
IO Device SFB, see STEP 7 online help
(System functions/System
function blocks)
7.5.2 Channel diagnostics
Additional information regarding the data records for PROFINET IO
For information on the structure of diagnostics data records, including programming
examples, refer to the Migration from PROFIBUS DP to PROFINET IO
(
http://support.automation.siemens.com/WW/view/en/19289930 ) Programming Manual.
86
ET 200eco PN
Operating Instructions, 06/2022, A5E01250250-AN
Interrupt, error, and system messages
7.5 Diagnostics with STEP 7