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3 SPECIFICATIONS
MELSEC-Q
Classification Device Type Expression
User
Assignment
Remarks
Link input J \ X0 to J \ X01FFF Hexadecimal
Link output J \ Y0 to J \ Y01FFF Hexadecimal
Link relay J \ B0 to J \ B03FFF Hexadecimal
Link special relay
Bit
J \ SB0 to J \ SB01FF Hexadecimal
Link register J \ W0 to J \ W03FFF Hexadecimal
Link direct
devices
Link special register
Word
J
\ SW0 to J \ SW01FF Hexadecimal
Fixed
• Devices on the left
exist in each link
module.
•
indicates the
network No., any of
1 to 239 and 254.
Module access
devices
Intelligent function
module device
Word U
\ G0 to U \ G65535 Decimal
Fixed
(depending
on
intelligent
function
module)
• Exist in each
intelligent function
module.
•
indicates the I/O
No. /16, and
changes depending
on the model as
indicated below.
Q00JCPU: 0 to 0F
Q00CPU, Q01CPU:
0 to 03F
Index register Index register Word Z0 to Z9 Decimal Fixed
R0 to R32767 Decimal
• When block
switching is used
File register File register 1 Word
ZR0 to ZR65535 Decimal
Fixed
• When serial number
access is used
Pointer Pointer
P0 to P299 Decimal Fixed
SFC block Bit BL0 to BL127 Decimal
• Exclusively for SFC
program
Network No. J1 to J239, J254 Decimal
Other
I/O NO
Q00JCPU: U0 to U0F
Q00CPU, Q01CPU:
U0 to U03F
Hexadecimal
Fixed
Decimal constant K-2147483648 to K2147483647
Hexadecimal
constant
H0 to HFFFFFFFF
Real number
constant
E
1.17550-38 to E 3.40282+38
Constant
Character string
constant
"ABC123", etc.
1: Can be used for the Q00CPU and Q01CPU only.
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