Festo CPX Series Electronic Manual page 157

B. Parameters and data of the CPX terminal
Diagnostic memory data (10 bytes per entry, max. 40 entries)
Byte
Title
no.
1 Days
2 Hours
3 Minutes
4 Seconds
5 Milliseconds
3)
6 Module code
7 Module position
8 Channel
3)
number
9 Fault number
10 Subsequent
3)
channels
1) d (diagnostic event) = 0...39; most current diagnostic event = 0
2) Measured from the moment the power supply is switched on.
3) If the fault number = 0, the contents of these bytes is also 0. If the fault number lies between
128...199 (error class 3), the contents of these bytes are not relevant (servicing required).
Table B/36: Diagnostic memory data
Festo P.BE-CPX-SYS-EN en 0112NH
Description
2)
Number of days
2)
Number of hours
2)
Number of minutes
2)
Number of seconds
2)
Number of msec
Additionally: Bit 7 is set if it is the
first entry after Power ON.
Module code of the module which
registered the fault.
Module number of the module which
registered the fault; 63 = fault not
module-related
Bit 7 6 5...0: Description
0 0 0...63: Number of the
1st. faulty out-
put channel
1 0 0...63: Number of the
1st. faulty input
channel
0 1 0...63: Module fault
1 1 0...63: Reserved
0...255: Fault number (possible
fault messages see
section 5.1.1)
Number of subsequent channels with
the same fault
1)
Function no.
Value 3488 + n
0...255 n = 10 * d + 0
0...23 n = 10 * d + 1
0...59 n = 10 * d + 2
0...59 n = 10 * d + 3
0...99 n = 10 * d + 4
or
128...227
0...255 n = 10 * d + 5
0...47, n = 10 * d + 6
63
0...255 n = 10 * d + 7
0...255 n = 10 * d + 8
0...63 n = 10 * d + 9
B-27