Specifications

22
2. Replacement of FX2N series
2.4.2 Device comparison
z Comparison of FX2N series and FX3U series devices
The devices used in FX
2N series can be used in the FX3U series including special devices.
The following table also shows devices implemented in the FX
3U series.
 Device comparison table (the shaded cells indicates difference in specication).
Device FX2N series FX3U series
Division Use Number
No. of
points
Number
No. of
points
M
Auxiliary
relay
General use [variable] M0 to M499
500
points
M0 to M499
500
points
Latched [variable] M500 to M1023
524
points
M500 to M1023
524
points
Latched [xed] M1024 to M3071
2048
points
M1024 to M7679
6656
points
Special M8000 to M8255
256
points
M8000 to M8511
512
points
S
State relay Initial state
(general) [variable]
S0 to S9
10
points
S0 to S9
10
points
General use [variable] S10 to S499
490
points
S10 to S499
490
points
Latched [variable] S500 to S899
400
points
S500 to S899
400
points
Annunciator
(latched) [variable]
S900 to S999
100
points
S900 to S999
100
points
Latched [xed] - - S1000 to S4095
3096
points
T
Timer
100ms T0 to T191
192
points
T0 to T191
192
points
100ms
(for subroutine or
interrupt)
T192 to T199 8 points T192 to T199 8 points
10ms T200 to T245
46
points
T200 to T245
46
points
1ms retentive type T246 to T249 4 points T246 to T249 4 points
100ms retentive type T250 to T255 6 points T250 to T255 6 points
1ms - - T256 to T511
256
points
C
Counter General up counter
(16-bit) [variable]
C0 to C99
100
points
C0 to C99
100
points
Latched up counter
(16-bit) [variable]
C100 to C199
100
points
C100 to C199
100
points
General bi-directional counter
(32-bit) [variable]
C200 to C219
20
points
C200 to C219
20
points
Latched bi-directional counter
(32-bit) [variable]
C220 to C234
15
points
C220 to C234
15
points
High-
speed
counter
1-phase 1-counting input
bi-directional
(32-bit) [variable]
C235 to C245
60kHz 2 points
+10kHz 4 points
6 points
C235 to C245
100kHz 6 points
+10kHz 2 points
8 points
1-phase 2-counting input
bi-directional
(32-bit) [variable]
C246 to C250
60kHz 1 points
or 10kHz 2 points
2 points
C246 to C250
100kHz 2 points
or 40kHz 2 points
2 points
2-phase 2-counting input
bi-directional
(32-bit) [variable]
C251 to C255
5kHz 2 points
2 points
C251 to C255
50kHz 2 points
or 40kHz 2 points
2 points