Mitsubishi Q Series User Manual page 74

3 SPECIFICATIONS
3 - 43
(4) Module ready flag (Xn3)
(a) This signal turns on as soon as the Q62HLC is ready when the
programmable controller CPU is powered on or reset.
(b) Read/write of Q62HLC buffer memory data from the programmable
controller CPU is performed when the temperature control module ready flag
(Xn3) is on.
Write command
X0
(c) When the module ready flag (Xn3) is turned off, confirm the status of the
watchdog timer error flag (Xn0).
When the watchdog timer error flag (Xn0) is on, operate referring to Section
8.6.
(5) Auto tuning status flag (Xn4, Xn5)
(a) This signal turns on when auto tuning of the corresponding channel is
executed.
Channel
1
2
(b) Auto tuning is executed using the auto tuning command (Yn4, Yn5).
(c) This signal turns "on" while auto tuning is being executed and turns "off"
automatically on completion of auto tuning.
At the abnormal completion of the auto tuning is being executed and turns
"off" automatically, confirm the error code to be stored in (buffer memory
address: 0).
Refer to Section 8.1 for error codes.
(6) FeRAM write completion flag (Xn8)
(a) This signal turns on after completion of write of buffer memory contents to
FeRAM which starts when the FeRAM backup command (Yn8) turns on.
After turning on Yn8, it takes more than ten seconds until Xn8 is on.
(b) When the FeRAM backup command (Yn8) turns off, the FeRAM write
completion flag (Xn8) also turns off.
ON
OFF
Yn8
OFF
Xn8
OFF
XnA
X3
Used as buffer memory read/write interlock.
Auto tuning status flag
Xn4
Xn5
During write to FeRAM
MELSEC-Q
TOP H0 H22 K100 K1
ON/OFF status
ON : Auto tuning in execution
OFF: Auto tuning not in execution or
completed
ON
Completion of write to FeRAM
3 - 43