Yaskawa MP920 Communications Module - Manual (Page 261)

Appendix B 218IF Messages
B.1.2 MEMOBUS Binary Mode
B-12
„ Discontinuous Multiple Holding Register Read
MFC: 20H
SFC: 0DH
Length: 06H+
SPARE
CPU No.
(L)
(H)
(L)
(H)
(L)
(H)
Set the command length.
Command
Always 20H.
The SFC number is 0BH for discontinuous reading of holding
registers.
Set 4 bits each for the destination CPU number and the source
CPU number.
Set the address of a holding register to be read.
Set the number of holding registers to be read.
Set the address of a holding register to be read.
7 0
No.of registers×2
No. of registers (n)
Reference No.1
Reference No.n
MFC: 20H
SFC: 0DH
SPARE
CPU No.
Data 1
Data n
(L)
(H)
(L)
(H)
(L)
(H)
(L)
(H)
Set the command length.
Response
Always 20H.
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 read holding register contents are returned.
The number of read holding registers is returned.
7 0
06H + No.of
registers×2
No. of registers (n)