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87
Allocation of Word and Bit Addresses
Section 4-1
word data, it will access the present value (PV); if it is used for bit data, it will
access the Completion Flag for the timer/counter.
DM Area
DM area data is accessed in word units only. The contents of the DM area are
retained even after the PC power supply has been turned off or when opera-
tion begins or stops.
DM words DM 0000 through DM 1999 and DM 2022 through DM 2047 can be
used freely in the program; other DM words are allocated specific functions,
described below.
DM 2000 through DM 2021 contain the error log information. Refer to
Section
9 Troubleshooting
for details on the error log.
Note
DM 6600 through DM 6655 contain the PC Setup. Refer to
for
details.
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