Festo CPX Series Electronic Manual page 101

4. Diagnosis and error treatment
Module diagnostic data: Type of fault and location where the fault arose
Function no. 2008 + m * 4 + 0
Description Describes where the relevant fault occurred.
Bit Bit 0 ... 7
Values Bit 7
Bit 1 0 Description
0 0 Fault in the CP module M0
0 1 Fault in the CP module M1
1 0 Fault in the CP module M2
1 1 Fault in the CP module M3
Bit 3 2 Description
0 0 Faulty module in string L1
0 1 Faulty module in string L2
1 0 Faulty module in string L3
1 1 Faulty module in string L4
Bit 4, 5 reserved
Bit 6 Description
0 No module fault of the CPX−XP interface (channel−specific fault, see Bit 0 ... 3)
1 Module fault of the CPX−CP interface (not channel−related)
Bit 7 Description
0 Fault in an O module
1 Fault in an I module
1)
Does not apply when Interbus field bus nodes are used. For Interbus, Bit 0 ... 3 in binary code
corresponds to the number of I or O diagnostic channels (0 ... 15, see section B.2) of the faulty
module and not the module or string number.
Tab. 4/9: Type of fault and location where fault arose
Festo P.BE−CPX−CP−E N en 0405NH
Diagnostic data of the module (I/O diag. interface)
The specific representation of module diagnostic data (fault
messages) of the CPX−CP interface takes place according to
Tab. 4/9 and Tab. 4/10.
Type of fault and location where fault arose
6 5 ... 0 Description
0 0 0 ... 63 Fault in O channel, Bit 0 ... 5: Location of fault, see below
1 0 0 ... 63 Fault in I channel, Bit 0 ... 5: Location of fault, see below
0 1 0 ... 63 Module fault (not channel specific)
x 1 0 ... 63 Channel−specific fault
1)
1)
m = module number (0 ... 47)
4−17