YASKAWA MP920 User Manual page 260

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