Mitsubishi Q Series User Manual

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MELSEC-Q
3 SPECIFICATIONS
(7) Default value write completion flag (Xn9)
(a) Turns on after completion of write of Q62HLC default values to buffer
memory which starts when the default setting registration command (Yn9)
turns on.
(b) When the default setting registration command (Yn9) turns off, the default
value write completion flag (Xn9) also turns off.
(c) Perform unused channel setting to unused channels after completion of
default value write.
If unused channel setting is not made to unused channels, the "ALM" LED
of the Q62HLC is lit.
Y
n9
X
n9
OFF
OFF
ON
ON
Default value write completion
During write to buffer memory
(8) FeRAM write failure flag (XnA)
(a) This signal turns on at a failure of write of buffer memory contents to FeRAM
which starts when the FeRAM backup command (Yn8) turns on.
• OFF : Completion of write to FeRAM
• ON : Failure of write to FeRAM (Write could not be completed normally)
Yn8
Xn
A
Xn8
OFF
OFF
OFF
ON
ON
During write
to FeRAM
Error detection of write to FeRAM
(b) The FeRAM write failure flag (XnA) turns off at normal completion of write to
FeRAM.
(c) When the FeRAM write failure flag (XnA) has turned on, the FeRAM
contents are undefined.
Hence, powering on the programmable controller CPU again or resetting it
with the FeRAM write failure flag (XnA) on will make the buffer memory
contents undefined, causing the Q62HLC to operate with the default values.

Mitsubishi Q Series Specifications

General

Brand	Mitsubishi
Model	Q Series
Category	Control Unit
Language	English