Device Specification Ranges - Mitsubishi Electric MELSEC FX Series User Manual

FX communication
7.7.2

Device specification ranges

The following is the device and device number range that can be used in the access of device
memory.
Each device is composed of five characters.
Device (1 character, 2 characters with timer and counter) + device number (4 characters, 2
characters with timer and counter) = 5 characters.
1 ) Bit devices
Device
Inputs
Outputs
Auxiliary relays
States
Special auxiliary relays (M)
Timer contacts
Counter contacts
In FX series, the timer coil (TC) and counter coil (CC) are not supported.
2 ) Word devices
Device
Timer current value
Counter current value(C)
Data registers
File registers
RAM file registers
Special data registers (D)
* Only CN000 to CN199 can be used.
(C200 to C255 of 32 bit counter or high speed counter cannot be used.)
Notes
1 ) When using bit devices specified in word units (WR, WW, WT), the number of the
head device must be a multiple of 8 (or if an octal device end in 0) e.g. X30, M24.
2 ) The special auxiliary relays (M8000 to M8255) and special data registers (D8000
to D8255) can be read only, write only, and received for system use.
If an attempt is made to write outside the write enable range, an error may occur in
the programmable controller. Accordingly, for details of special auxiliary relays and
special data registers, see the programmable controller manual.
Device specification characters
FX FX
0N 1S
∼ ∼
X0000
X0000
(X)
X0177 X0017
∼ ∼
Y0000 Y0000
(Y)
Y0177 Y0015
∼
(M)
M0000 M0511
∼
(S) S0000 S0127
∼
M8000 M8254
∼
(T) TS000 TS063
∼
CS000 CS031
(C)
∼
CS235 CS254
Device specification characters
FX FX
0N 1S
∼
(T)
TN000 TN063
∼
CN000 CN031
∼
CN235 CN254
∼
(D) D0000 D0255
∼ 
(D) D1000
D2499

(D)
∼
D8000 D8255
FX
2N,
FX, FX FX
2C 1N
FX
2NC
∼ ∼ ∼
X0000 X0000 X0000
X0337 X0177 X0267
∼ ∼ ∼
Y0000 Y0000 Y0000
Y0337 Y0177 Y0267
M0000
∼
M0000 M1535
M3071
∼
S0000 S0999
∼
M8000 M8255
∼
TS000 TS255
∼
CS000 CS255
FX , FX
1N 2N
FX, FX
2C
FX
2NC
∼
TN000 TN255
∼
CN000 CN255
∼ ∼
D0000 D0999 D0000 D7999
∼ 
D1000 D2999
∼ 
D6000 D7999
∼
D8000 D8255
Computer link 7
Usable
command
Decimal/octal
BR,
expression
BW, WW,
BT
Octal
∼
'
Decimal
Usable
command
Decimal/
octal
BR,
,
WR,
expression
BW,
WW
BT
×
'
Decimal
7-17
WR,
WT
'
×
7
WT
'
'
*
'