1.1 Table of Relays, Memory Areas and Constants
1-5
Item Number of
points
Memory area available for use
Matsushita IEC
Function
External input relay
(see note 3)
6 double
words
DWX0−DWX11 %ID0−
%ID11
Code for specifying 32 external
input points as a double word
(32 bits) of data.
)
External output relay
(see note 3)
6 double
words
DWY0−DWY11 %QD0−
%QD11
Code for specifying 32 external
output points as double word
(32 bits) of data.
Internal relay
(see note 2)
31 double
words
DWR0−DWR61 %MD0.0−
%MD0.61
Code for specifying 32 internal
relay points as double word
(32 bits) of data.
Data register
(see note 2)
830 double
words
DDT0−
DDT1658
%MD5.0−
%MD5.1658
Data memory used in a
program. Data is handled in
32-bit units (double word).
Timer/counter set
value area
72 double
words
DSV0−DSV142 %MD3.0−
%MD3.142
Data memory for storing a
target value of a timer and an
initial value of a counter. Stores
by timer/counter number.
Timer/counter
elapsed value area (see
note 2)
72 double
words
DEV0−DEV142 %MD4.0−
%MD4.142
Data memory for storing the
elapsed value during operation
of a timer/counter. Stores by
timer/counter number.
M
Special data
register
56 double
words
DDT9000−
DDT9110
%MD5.9000−
%MD5.9110
Data memory for storing
specific data. Various settings
and error codes are stored.
Index register 1 double
words
DI0 %MD6.0 Used as an address of
memory area and constants
modifier.
Item Number of points
oint
Master control relay points (MCR) 32 points
Number of labels (JP and LOOP) 64 labels
Number of step ladders
128 stages
trol in
Number of subroutines
16 subroutines
Cont
Number of interrupt programs
7 programs (external: 6, internal: 1)
Item Range available for use
Matsushita IEC
Decimal constants K−32768 to K32767 (for 16-bit operation) −32768 to 32767 (for 16-bit operation)
K−2147483648 to K2147483647
(for 32-bit operation)
−2147483648 to 2147483647
(for 32-bit operation)
H0 to HFFFF (for 16-bit operation) 16#0 to 16#FFFF (for 16-bit operation)
Consta
H0 to HFFFFFFFF (for 32-bit operation) 16#0 to 16#FFFFFFFF (for 32-bit
operation)
Floating point type
F−1.175494×10
−38
to F−3.402823×10
38
−1.17549410E−38 to −3.402823E38
F1.175494×10
−38
to F3.402823×10
38
1.17549410E−38 to 3.402823E38
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