Festo Контроллер позиционирования CPX-CMPX - Manual (Page 128)

5. Diagnostics and error handling
5−14
Festo P.BE−CPX−SYS−EN en 0902e
5.2.2 The I/O diagnostic interface
Organisation of internal data and parameters
Internal data and parameters of the CPX modules and of the
CPX terminal are stored in a common memory range. With
the I/O diagnostic interface, read access can be made with
the aid of the function number to individual bytes of this
memory range.
Parameters can be modified with the aid of fieldbus−specific
functions (depending on the fieldbus used) or with the handĆ
held (see also section 4.2.2).
Method of operation of the I/O diagnostic interface
Detailed diagnostic information can be accessed via the I/O
diagnostic interface. You can ascertain exactly, e.g. on which
module and on which channel a fault has occurred. 16 input
bits and 16 output bits, via which all diagnostic data can be
read, are available for accessing the system diagnosis.
The addresses of the input and output bits of the I/O diagĆ
nostic interface depend on the fieldbus used (see the manual
for the specific CPX bus node).