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Mitsubishi Electric MELSEC Q Series User Manual page 55

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3 SPECIFICATIONS
3 - 17
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(2) Writing data to E
(a) When writing data to E
2
• E
PROM write completion flag (Xn8) turns on at completion of data write to
2
E
PROM.
2
• E
PROM write failure flag (XnA) turns on if write of data to E
completed normally.
(b) Make changes to buffer memory when the E
off.
Programmable
controller CPU
2
1) E
PROM backup start
command (Yn8):
ON (Write command)
2
3) E
PROM write completion
flag (Xn8): ON (completed)
(3) Reading data from E
2
E
PROM data read occurs under either of the following conditions.
• When the programmable controller CPU is powered on or reset.
2
• When E
PROM's PID constant read command (3E
Note that the read data are only the PID constants and loop disconnection
detection judgment time of the corresponding channel.
search engine
2
PROM
2
2
PROM, turn on E
PROM backup command (Yn8).
OS
Buffer
memory
data
2
PROM
MELSEC-Q
2
PROM is not
2
PROM write completion flag is
Q64TC
2
E
PROM
2) Write
Read
At power-on
or reset
, 5E
, 7E
, 9E
) turns on.
H
H
H
H
3 - 17

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