6 217IF Module
6.6.2 MELSEC Communications
6-26
MELSEC Devices
The table below shows the MELSEC bit devices and word devices that can be accessed from
the MP900.
The MP900 register numbers corresponding to the MELSEC device range and the MEMO-
BUS commands used are also shown in the table.
* Register number offsets can be specified for both input relays and coils by the MSG-SND and
MSG-RCV system functions.
* Register number offsets can be specified for both input registers and holding registers by the
MSG-SND and MSG-RCV system functions.
Table 6.10 MELSEC Bit Devices
Device Device Range for Common
ACPU Commands
Decimal/
Hexadecimal
MEMOBUS
Command
Leading No.
Register No.
*
X X0000 to X07FF Hexadecimal 02H: Input relays 0 to 2047 MB000000 to MB00127F
Y Y0000 to Y07FF Hexadecimal 01H/0FH: Coils 0 to 2047 MB000000 to MB00127F
M M0000 to M2047 Decimal 01H/0FH: Coils 2048 to 4095 MB001280 to MB00255F
L L0000 to L2047
S S0000 to S2047
M M9000 to M9255 Decimal 01H/0FH: Coils 4096 to 4351 MB002560 to MB00271F
B B0000 to B03FF Hexadecimal 01H/0FH: Coils 4352 to 5375 MB002720 to MB00335F
F F0000 to F0255 Decimal 01H/0FH: Coils 5376 to 5631 MB003360 to MB00351F
TS TS000 to TS255 Decimal 02H: Input relays 2048 to 2303 MB001280 to MB00143F
TC TC000 to TC255 Decimal 02H: Input relays 2304 to 2559 MB001440 to MB00159F
CS CS000 to CS255 Decimal 02H: Input relays 2560 to 2815 MB001600 to MB00175F
CC CC000 to CC255 Decimal 02H: Input relays 2816 to 3071 MB001760 to MB00191F
Table 6.11 MELSEC Word Devices
Device Device Range for
Common ACPU
Commands
Decimal/
Hexadecimal
MEMOBUS Command Leading No.
Register No.
*
TN TN111 to TN255 Decimal 04H: Input registers 0 to 255 MW00000 to MW00255
CN CN000 to CN255 Decimal 04H: Input registers 256 to 511 MW00256 to MW00511
D D0000 to D1023 Decimal 03H/10H: Holding registers 0 to 1023 MW00000 to MW01023
D (Special) D9000 to D9255 Decimal 03H/10H: Holding registers 1024 to 1279 MW01024 to MW01279
W W0000 to W03FF Hexadecimal 03H/10H: Holding registers 1280 to 2303 MW01280 to MW02303
R R0000 to R8191 Decimal 03H/10H: Holding registers 2304 to 10495 MW02304 to MW10495
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