Mitsubishi Q00JCPU User Manual page 390

6
FUNCTIONS
(4) Precautions for using Universal model QCPU
6
- 90 6.12 Writing in Program during CPU Module RUN
6.12.3 Precautions for online change
(a) Write to program memory during online change or TC setting value change
Contents changed during online change or TC setting value change are
transferred to the program memory automatically at the same time as data is
written to the program cache memory.
The time required for writing data during RUN and changing T/C setting value is
prolonged due to automatic transfer of data to a program memory by the time
shown in Table 6.26.
Table6.31 Prolonged time due to automatic transfer of data to a program memory
CPU model
Q02UCPU
Q03UDCPU, Q04UDHCPU, Q06UDHCPU,
Q03UDECPU, Q04UDEHCPU, Q06UDEHCPU
Q13UDHCPU, Q13UDEHCPU
Q26UDHCPU, Q26UDEHCPU
In addition, since the number of write to the program memory (Flash ROM) is
limited (up to hundred thousand times), set the automatic transfer of data to the
program memory to be invalid if writing data during RUN or TC setting value
change is executed frequently.
Transfer time
Ts 320 + 4.8 (s)
Ts 260 + 4.7 (s)
Ts 600 + 8.0 (s)
Ts 1100 + 15.0 (s)
Ts: Scan time (s)