Mitsubishi Electric Melsec Q Series User Manual page 50

3
SPECIFICATIONS
(3) Diagnostic information area clear request signal (Y02), Diagnostic
Figure 3.3 Diagnostic Information Area Clear Request Signal (Y02), Diagnostic Information Area Cleared
3
- 9 3.3 Input/Output Signals to/from Programmable Controller CPU
3.3.2 Details of I/O signals
information area cleared signal (X02)
(a) Turn ON the Diagnostic information area clear request signal (Y02) when clearing
the following information:
• Diagnostic information area (for mode 3) (Un\G23072 to Un\G23321)
• Extended diagnostic information area (for mode 3) (Un\G23328 to
Un\G23454)
• Local station error information area (Un\G23071)
(b) When the Diagnostic information area clear request signal (Y02) is turned ON,
and the processing at (a) is completed, the Diagnostic information area cleared
signal (X02) turns ON.
(c) When new diagnostics information is generated while the Diagnostic information
area clear request signal (Y02) is ON, the following information stays cleared. (No
diagnostic, extended diagnostic or local station error information is stored.)
• Diagnostic information area (for mode 3) (Un\G23072 to Un\G23321)
• Extended diagnostic information area (for mode 3) (Un\G23328 to
Un\G23454)
• Local station error information area (Un\G23071)
(d) After the Diagnostic information area cleared signal (X02) has turned ON, turn
OFF the Diagnostic information area clear request signal (Y02).
(e) Taking corrective actions for the error and turning OFF the Diagnostic information
area clear request signal (Y02) turns OFF the Diagnostic information area cleared
signal (X02).
(f) After the Diagnostic information area clear request signal (Y02) is turned OFF, the
QJ71PB92V checks for diagnostic information again.
If any diagnostic information has been generated, the diagnostic information,
extended diagnostic information and/or local station error information is stored in
the buffer memory.
Diagnostic information area
clear request signal (Y02)
Diagnostic information area
cleared signal (X02)
Clear request
Clear completed
Signal (X02)