5 I/O Memory
5-6
CP1E CPU Unit Software User’s Manual(W480)
5-1-3 I/O Memory Areas
Name No. of bits Word addresses Remarks Reference
CIO Area Input Bits 1,600 bits
(100 words)
CIO 0 to CIO 99 − Refer to 5-2 I/O Bits.
Output Bits 1,600 bits
(100 words)
CIO 100 to CIO 199 −
Serial PLC
Link Words
1,440 bits
(90 words)
CIO 200 to CIO 289 − Refer to Section 14 Serial
Communications.
Work Area (W) 1,600 bits
(100 words)
W0 to W99 − Refer to 5-3 Work Area
(W).
Holding Area (H) 800 bits (50 words) H0 to H49 The data is unstable if
power is interrupted, when
the battery is not mounted.
Refer to 5-4 Holding Area
(H).
Data Memory
Area (D)
E-type CPU
Unit
2K words D0 to D2047 Data in specified words of
the DM Area can be
retained in the built-in
EEPROM in the backup
memory by using a bit in
the Auxiliary Area. Applica-
ble words: D0 to D1499
(One word can be speci-
fied at a time.)
Refer to 5-5 Data Memory
Area (D).
N/NA-type
CPU Unit
8K words D0 to D8191 Data in specified words of
the DM Area can be
retained in the built-in
EEPROM in the backup
memory by using a bit in
the Auxiliary Area.Applica-
ble words: D0 to D6999
(One word can be speci-
fied at a time.)
Timer Area (T) Present values 256 T0 to T255 − Refer to 5-6 Timer Area
(T).
Timer Comple-
tion Flags
256
Counter Area (C) Present values 256 C0 to C255 The data is unstable if
power is interrupted, when
the battery is not mounted.
Refer to 5-7 Counter Area
(C).
Counter Com-
pletion Flags
256 −
Auxiliary Area
(A)
Read only 7,168 bits
(448 words)
A0 to A447 The data is unstable if
power is interrupted, when
the battery is not mounted.
Refer to A-2 Auxiliary Area
Allocations by Address.
Read-write 4,896 bits
(306 words)
A448 to A753
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