I/O Diagnostic Interface - Festo CPX Series Manual

4 Diagnostics and error handling
4.5.2

I/O diagnostic interface

Detailed diagnostic information can be accessed via the I/O diagnostic interface, e.g.:
– You can ascertain on which module and on which channel a fault has occurred.
– The last 40 fault messages are recorded and can be accessed (Diag. trace).
16 Input bits and 16 output bits, through which all diagnostic data can be read, are available for ac-
cessing the system diagnosis.
Note
In order to use the I/O diagnostic interface, the system diagnostics must be activated
via the DIL switch on the bus node (
The status bits and the I/O diagnostic interface of the system diagnostics occupy, if activated, the first
2 bytes respectively of the inputs and outputs of the word range of the Station 1 (
Instructions on diagnostics with the I/O diagnostics interface are found in the CPX system
description (P.BE-CPX-SYS-...).
60
section 2.4.10).
Festo – P.BE-CPX-FB23-24-EN – 1305a – English
e.g. Fig. 3.1).