Hello, by using the diagnose buffer via TIA portal V13 ,I am getting an error 'I/O device failure'. I am using S7-1200. Please find attached file for reference. 

Please help.

Sam0901

Hello, by using the diagnose buffer via TIA portal V13 ,I am getting an error 'I/O device failure'. I am using S7-1200. Please find attached file for reference. 

Please help.

 Hi Mate

A lot can result in this error but we need to narrow it down.

Can you share the HW Config to confirm if all connected modules are in healthy operating condition?

Cheers

Dyoung