Mitsubishi Electric MELSEC-Q00U(J)CPU User Manual page 172

(4) Operations prohibited when programs are written to the CPU module in the
RUN status, TC setting value is changed, or data are transferred from a
program cache memory to a program memory
Refer to Page 173, Section 3.12.3 (2).
(5) Instructions that do not operate normally when programs are written to the
CPU module in the RUN status
Refer to Page 174, Section 3.12.3 (3).
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