Panasonic FP-E, Programming Manual, Page: 34 / 1334

Relays, Memory Areas and Constants
1 - 10
Item Number of
points
Memory area available for use Function
Data register
(see note 2)
32765 words DT 0 − DT 32764 Data memory used in a
program. Data is handled in
16-bit units (one word).
Link data register
(see note 2)
128 words LD 0 − LD 127 A shared data memory which
is used within the PLC link.
Data is handled in 16-bit units
(one word).
ea(
w
o
rd
s) Timer/counter set
value area
(see note 2)
1024 words SV 0 − SV 1023 Data memory for storing a
target value of a timer and an
initial value of a counter. Stores
by timer/counter number.
M
emory
are
a
Timer/counter elapsed
value area (see note 2)
1024 words EV 0 − EV 1023 Data memory for storing the
elapsed value during operation
of a timer/counter. Stores by
timer/counter number.
M
Special data
register
260 words DT 90000 − DT 90259 Data memory for storing
specific data. Various settings
and error codes are stored.
Index register 14 words I 0 − I D Can be used as an address of
memory area and constants
modifier.
Item Number of points
n
t Master control relay points (MCR)
256
l p
oin
t
Number of labels (JP and LOOP) 256
n
trol ion
p
Number of step ladders 1,000 stages
Con
t
ructi
o
Number of subroutines 100 subroutines
C
instr
u
Number of interrupt programs 9 programs (8 external input points “X0 to X7”, 1 periodical interrupt
point “0.5 ms to 30s”)
Item Range available for use Item Range available for use
Decimal constants
(i t t )
K − 32768 to K32767 (for 16-bit operation)
t
(integer type)
K − 2147483648 to K2147483647 (for 32-bit operation)
stant
Hexadecimal
t t
H0 to HFFFF (for 16-bit operation)
C
ons
t
constants
H0 to HFFFFFFFF (for 32-bit operation)
C
o
Floating point type
F − 1.175494
×
10
− 38
to F − 3.402823
×
10
38
F1.175494
×
10
− 38
to F3.402823
×
10
38
Notes
1) The number of points noted above is the number reserved as
the calculation memory. The actual number of points available
for use is determined by the hardware configuration.
2) If no battery is used, only the fixed area is backed up
(counters 16 points: C1008 to C1023, internal relays 128
points: R900 to R97F, data registers: DT32710 to DT32764).
When the optional battery is used, data can be backed up.
Areas to be held and not held can be specified using the
system registers.
3) The points for the timer and counter can be changed by the
setting of system register 5. The number given in the table are
the numbers when system register 5 is at its default setting.
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