![background image](http://html1.mh-extra.com/html/ifm/ac422s/ac422s_original-operating-instructions_620684017.webp)
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UK
9 Diagnostics
Any information, warning or error messages are indicated in the display on
the device. The pictogram of the function unit concerned is superposed by an
information, warning or error symbol. If for one function unit a warning and an
error message exist at the same time, only the error symbol is displayed.
Warning message
Information message
Error message
All messages are displayed in plain text in the Online Support Center
(OSC).
10 Maintenance, repair and disposal
► Replace the buffer battery of the real-time clock as required, type CR2032.
► Dispose of the device in accordance with the national environmental
regulations.
11 Approvals / tests
• EMC
• Functional safety / TÜV-Rheinland
• AS-Interface / AS-i Safety at Work
• UL (cULus)
• Ethernet/IP
12 Additional documents
Data sheets, device manual, programming manual and registration documents
→ www.ifm.com