Instruction Manual

5. Diagnostics and error handling

5−17

Festo P.BE−CPX−SYS−EN en 0902e

Example 1: Check to see if there is diagnostic data

Function no. 1937 specifies whether there is diagnostic data

and contains, where applicable, the number of the first mod

ule on which a fault has occurred (see section B.2.6).

Function no. = 1937

1937 dec. = 11110010001 Bin

89101112131415 01234567

Function no.

Control bit

1001000110000111

1 Bit number of the outputs 2 Signal status of the outputs

Fig.5/7: Reading out function no. 1937

There are diagnostic data if bit 6 supplies a 1−signal. Bit 0 ... 5

contain the module number of the first faulty module (see

also section B.2.6.). If, for example, there were a fault on

module 5 (5 dec. = 101 Bin), the

following input data would

be available:

89101112131415 01234567

Diagnostic data

Quitting bit

Reserved

100 100011

Bit number of the inputs 2 Signal status of the inputs

Fig.5/8: Reply data (example)

Detailed information on the module diagnostic data can be

found in section B.2.7.