Yaskawa MP920 Communications Module - Manual (Page 260)

B.1 Extended MEMOBUS Messages
B-11
B
„ Holding Register Write (Extended)
MFC: 20H
SFC: 0BH
Length: 06H+
SPARE
CPU No.
Data 1
Data n
(L)
(H)
(L)
(H)
(L)
(H)
(L)
(H)
(L)
(H)
Set the command length.
Command
Always 20H.
The SFC number is 0BH when holding registers are written.
Set 4 bits each for the destination CPU number and the source
CPU number.
Set the contents of the holding register to be written.
Set the leading address of the holding registers to be written.
Set the number of holding registers to be written.
7 0
No.of registers×2
No. of registers (n)
Reference No.
MFC: 20H
SFC: 0BH
Length: 08H
SPARE
CPU No.
Set the command length.
Response
The same SFC number as that specified in the command is
returned.
Set 4 bits each for the destination CPU number and the source
CPU number.
The leading addresses of the written holding registers are returned.
The number of written holding registers is returned.
(L)
(H)
Reference No.
No. of registers (n)
(L)
(H)
(L)
(H)
(H)
7 0
Always 20H.