Check To See If There Is Diagnostic Data; Reading Out Function No. 1937; Reply Data (Example) - Festo CPX System Manual

5. Diagnostics and error handling
15
1
1
2
Control bit
1
Bit number of the outputs
Fig. 5/7: Reading out function no. 1937
15
1
1
2
Quitting bit
1
Bit number of the inputs
Fig. 5/8: Reply data (example)
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
14 13 12 11 10
0 0 0 0 1
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:
14 13 12 11 10
Reserved
Detailed information on the module diagnostic data can be
found in section B.2.7.
9 8 7 6
1 1 1 0
Function no.
2
Signal status of the outputs
9 8 7 6
0 1
2
Signal status of the inputs
5 4 3 2 1
0 1 0 0 0
5 4 3 2 1
0 0 0 1 0
Diagnostic data
0
1
0
1
5−17