Mitsubishi Electric GOT2000 Series Connection Manual page 410

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9.6 Device Range that Can Be Set
(2) Monitoring the timer (T) and the counter (C)
(a) Address setting
Be sure not to set the same address range for the timer (T) and the counter (C).
Even if these addresses are overlapped, GOT displays no error.
GOT monitors them according to the address instead of the device name.
Therefore, if a device which is invalid for the SHARP PLC side parameter is set using GT
Designer3, GOT monitors other device (a device corresponding to the address range of
the set device).
Example:
Content in SHARP PLC parameter setting
T0000 to T1000
C1001 to C1777
Content in GT Designer3
parameter setting
(b) Contact writing into timer (T) and the counter (C)
Writing the contact for the timer (T) and the counter (C) can only be done while the CPU
is in RUN (while the timer and counter is in operation).
Even if GT Designer3 is
set to "C0000", GOT will
also monitor "T0000".