Festo CPX - Page 118

5. Diagnostics and error handling
5−4
Festo P.BE−CPX−SYS−EN en 0902e
Diagnostics options Brief description see
1
On the spot diagnosis with
LED
The LEDs on the electric and pneumatic modules
show hardware faults, bus faults, etc.
Section 5.1.2
2
On the spot diagnosis with
the handheld
The handheld:
 Shows current error messages in plain text
 Offers access to the diagnostic memory
Manual for
handheld
(CPX−MMI)
3
System status scanning
with the fieldbus (status
bits scanning)
The 8 status bits display common diagnostic
messages (global error messages).
Section 5.2.1
System diagnosis with the
fieldbus (via I/O diagnostic
interface)
Internal diagnostic data can be read via the I/O
diagnostic interface. In this way detailed diagno
stic information can be accessed, even if the
fieldbus used does not offer any extensive field
bus−specific diagnostic functions.
The I/O diagnostic interface offers:
 Access to the current error message
 Access to the diagnostic memory
 Read access to internal parameters and data.
Section 5.2.2
Fieldbus−specific diagno
stic functions
Special diagnostic functions or communication
services are available, depending on the fieldbus
used. For example communication services on:
 DPV1 (PROFIBUS)
 The PCP channel (Interbus)
 SDO access (CANopen)
Manual for the
specific CPX
bus node
Tab.5/1: Diagnostics options of the CPX terminal