Patent ID: 7058542

Claim:
A system for diagnosing a process device, the system comprising at least one control computer ( 6 , 23 ) collecting diagnostics data relating to the process device ( 2 , 14 , 15 , 16 ); a field bus ( 27 , 45 ); field devices ( 14 A, 15 A, 16 A, 18 A, 28 A, 28 B, 29 A, 29 B) which comprise a control unit ( 430 ) and a field bus interface ( 44 ) for interfacing with the field bus ( 45 ) and for communicating with said at least one control computer over the field bus, characterized in that the system further comprises a remote diagnostics device ( 1 ) which is placed in connection with the process device ( 2 ) separate from the field devices and which comprises diagnostics electronics ( 31 ) collecting diagnostics data relating to the process device, and a transmitter part ( 33 ) for wireless ( 17 ) transmission of the diagnostics data to one of said field devices, and that said one field device comprises a receiver part ( 41 ) for wireless ( 17 ) reception of the diagnostics data from said remote diagnostics device ( 1 ), said control unit ( 430 ) being arranged to process the received diagnostics data and to transmit a diagnostics report over said field bus interface ( 44 ) and field bus to said control computer ( 6 , 27 ).