Mitsubishi Electric MELSECQ Series User Manual page 38

3
SPECIFICATIONS
3
- 16
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(10) Error reset command (Un\G21)
• This area is used for resetting the error code stored in the error code of buffer
memory (Un\G20) by "0".
• Writing 1 (ON) to the error reset command (Un\G21) resets the error code.
• After an error code is reset, the QD63P6 writes 0 (OFF) to the error reset
command (Un\G21).
• After fixing the error cause, make sure to reset the error code with the error reset
command (Un\G21).
If a new error (error code: 100 to 600) occurs while an error code is still stored to
the error code in buffer memory (Un\G20), the error code stored last is retained
and the latest error code is not stored. (Refer to Section 8.5.)
• If the error code is reset with the error reset command (Un\G21) while the error
cause has not yet been fixed, the error code is stored again to the error code in
buffer memory (Un\G20) when the error cause is detected again. (Refer to
Section 8.5.)
• If a value other than 1 (ON) is written to the error reset command (Un\G21), the
error is not reset.
Error reset command
(Un\G21)
Error code
(Un\G20)
Figure 3.8 Timing chart for the error reset command (Un\G21)
3.4 Buffer Memory Assignment
3.4.2 Details of the buffer memory
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Performed by the QD63P6.
0 1 0
*1
100 0
*1 After an error code is reset, the QD63P6 writes 0 to the error
reset command (Un\G21).
*2 If the error reset command (Un\G21) is other than 1, the
QD63P6 does not reset the error code.
2
*2
100