Yaskawa MP940 - Manual (Page 108)

4.2 Serial Communications Function
4-15
4
∗ Yes: Command supported by the SERIAL Module.
No: Command not supported by the SERIAL Module.
Note: Special AnACPU commands are not supported. Use the common
ACPU commands for AnACPU access. The AnACPU expansion
registers cannot be accessed.
MELSEC Devices
The following table shows the MELSEC bit devices and word devices that can be accessed
from the MP940.
The MP940 register numbers corresponding to the MELSEC device range and the MEMO-
BUS commands used are also shown in the table.
Table 4.5 MELSEC Bit Devices
UR Reads the main microcomputer program 128 bytes No ---
VR Reads the sub-microcomputer program 128 bytes No ---
UW Writes the main microcomputer program 128 bytes No ---
VW Writes the sub-microcomputer program 128 bytes No ---
KR Reads the comment data 128 bytes No ---
KW Writes the comment data 128 bytes No ---
PR Reads the parameter contents 128 bytes No ---
PW Writes the parameter contents 128 bytes No ---
PS Recognizes and checks the rewritten parameter contents --- No ---
RR Requests for remote RUN/STOP --- No ---
RS
PC Reads the PLC model name --- No ---
GW Turns a global signal ON/OFF 1 point No ---
On demand Issues a request to send from the sequencer CPU 1,760 words max. No ---
TT Loopback test 254 characters Yes 08H
Command Description Qty
SERIAL
Support*
MEMOBUS
Command
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