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9 - 17 9 - 17
MELSEC-F
9 WHEN COMMUNICATING DATA USING THE MC PROTOCOL
(2) Designation method and accessible range of devices.
(a) In device read/write, each device is set by a device code and number as
shown in the diagram below.
B15 B0 B31 B0
to to
Device code
Device number (Set in hexadecimal)
[Example] In case of D100
D100 = 4420 00000064
H
Device number (hexadecimal)
Device code
(b) The following table outlines the device codes and numbers.
Device list
Device Device code Device range Device number
D0 to D7999 0000
H
to 1F3F
H
Data register
D
(44
H
, 20
H
)
D8000 to D8511 1F40
H
to 213F
H
Extension register
R
(52
H
, 20
H
)
R0 to R32767 0000
H
to 7FFF
H
Current value
TN
(54
H
, 4E
H
)
T0 to T511 0000
H
to 01FF
H
Timer
Contact
TS
(54
H
, 53
H
)
T0 to T511 0000
H
to 01FF
H
C0 to C199 0000
H
to 00C7
H
Current value
CN
(43
H
, 4E
H
)
C200 to C255 00C8
H
to 00FF
H
C0 to C199 0000
H
to 00C7
H
Counter
Contact
CS
(43
H
, 53
H
)
C200 to C255 00C8
H
to 00FF
H
Input
X
(58
H
, 20
H
)
X0 to X377 0000
H
to 00FF
H
Output
Y
(59
H
, 20
H
)
Y0 to Y377 0000
H
to 00FF
H
M0 to M7679 0000
H
to 1DFF
H
Internal relay
M
(4D
H
, 20
H
)
M8000 to M8511 1F40
H
to 213F
H
State
S
(53
H
, 20
H
)
S0 to 4095 0000
H
to 0FFF
H