10-14
10.3 Relays, Memory Areas and Constants
FPΣ 32k type
Number of points and
range of memory area
available for use
Item
C32T
C32TTM
C32T2
C23T2TM
C24R2
C24R2TM
C28P2
C28P2TM
Function
External input
Note1)
(X)
512 points
(X0 to X31F)
1184 points
(X0 to X73F)
Turns on or off based on external input.
External output
Note1)
(Y)
512 points
(Y0 to Y31F)
1184 points
(Y0 to Y73F)
Externally outputs on or off state
Internal relay
Note2)
(R) 1568 points (R0 to R97F)
Relay which turns on or off only within
program.
Link relay
Note2)
(L) 1024 points (L0 to R97F) This relay is a shared relay used for PLC link.
Timer
Note2)
(T)
This goes on when the timer reaches the
specified time. It corresponds to the timer
number.
Counter
Note2)
(C)
1024 points (T0 to
T1007/C1008 to C1023)
Note3)
This goes on when the timer increments. It
corresponds to the timer number.
Relay
Special internal relay
(R)
176 points (R9000 to R910F)
Relay which turns on or off based on specific
conditions and is used as a flag.
External input
Note1)
(WX)
32 words
(WX0 to
WX31)
74 words
(WX0 to
WX73)
Code for speciyfying 16 external input points
as one word (16 bits) of data.
External output
Note1)
(WY)
32 words
(WY0 to
WY31)
74 words
(WY0 to
WY73)
Code for specifying 16 external output points
as one word (16 bits) of data.
Internal relay
Note2)
(WR) 98 words (WR0 to WR97)
Code for specifying 16 internal relay points as
one word (16 bits) of data.
Link relay (WL) 64 words (WL0 to WL63)
Code for specifying 16 link relay points as
one word (16 bits) of data.
Data register
Note2)
(DT)
32765 words (DT0 to
DT32764)
Data memory used in program. Data is
handled in 16-bit units (one word).
Link register
Note2)
(LD) 128 words (LD0 to LD127)
This is a shared data memory which is used
within the PLC link. Data is handled in 16-bit
units (one word).
Timer/Counter set value
area
Note2)
(SV)
1024 words (SV0 to SV1023)
Data memory for storing a target value of a
timer and setting value of a counter. Stores
by timer/counter number
Timer/Couner elapsed
value area
Note2)
(EV)
1024 words (EV0 to EV1023)
Data memory for storing the elapsed value
during operation of a timer/counter. Stores by
timer/counter number.
Special data register
(DT)
260 words (DT90000 to
DT90259)
Data memory for storing specific data.
Various settings and error codes are stored.
Memory area
Index register (I) 14 words (I0 to ID)
Register can be used as an address of
memory area and constants modifier.
Master control relay
points (MCR)
256
Number of labels
(JP and LOOP)
256
Number of step ladders 1000 stages
Number of subroutines 100 subroutines
Control
Instruction point
Number of interrupt
programs
9 programs (8 external input points “X0 to X7”, 1 periodical interrupt point “0.5
ms to 30s”)
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