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FX3G/FX3U/FX3UC Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
4 Devices in Detail
4.1 Device Number List
2) FX3G PLCs
Device name Description Reference
I/O relay
Input relay X000 to X177 128 points
Device numbers are octal.
The total number of inputs and outputs is 128.
Section 4.2
Output relay Y000 to Y177 128 points
Auxiliary relay
General type
M0 to M383 384 points
Section 4.3
EEPROM keep type M384 to M1535 1152 points
General type
*1
M1536 to M7679
6144 points
Special type
*2
M8000 to M8511
512 points Chapter 37
State relay
Initial state type
(EEPROM keep)
S0 to S9 10 points
Section 4.4
EEPROM keep type
S10 to S899 890 points
Annunciator type
(EEPROM keep)
S900 to S999 100 points
General type
*1
S1000 to S4095 3096 points
Timer (on-delay timer)
100 ms T0 to T191 192 points 0.1 to 3,276.7 sec
Section 4.5
100 ms [for subroutine or
interrupt routine]
T192 to T199 8 points 0.1 to 3,276.7sec
10 ms T200 to T245 46 points 0.01 to 327.67 sec
Retentive type for 1 ms
(EEPROM keep)
T246 to T249 4 points 0.001 to 32.767 sec
Retentive type for 100 ms
(EEPROM keep)
T250 to T255 6 points 0.1 to 3,276.7 sec
1 ms T256 to T319 64 points 0.001 to 32.767 sec
Counter
General type up counter
(16 bits)
C0 to C15 16 points Counts 0 to 32,767
Section 4.6
EEPROM keep type up
counter (16 bits)
C16 to C199 184 points Counts 0 to 32,767
General type
bi-directional counter
(32 bits)
C200 to C219 20 points −2,147,483,648 to +2,147,483,647 counts
EEPROM keep bi-directional
counter
(32 bits)
C220 to C234 15 points −2,147,483,648 to +2,147,483,647 counts
*1. When the optional battery is installed, general type devices can be changed to latched (battery backed) type
devices by the parameter setting. However, the latched range cannot be set.
*2. For applicable functions, refer to Chapter 37.
For handling of the latched area, refer to Section 2.6.