YASKAWA MP920 User Manual page 252

Appendix B 218IF Messages
B.1.1 Message Configuration
List of Extended MEMOBUS Commands
The commands that make up the Extended MEMOBUS messages are identified by a func-
tion code, and have the functions shown in the following table.
Function Code
01H
Coil status read
02H Input relay status read
03H Holding register read
04H Input register read
05H Single coil status change
06H Single holding register write
08H Loopback test
09H Holding register read (extended)
0AH Input register read (extended)
0BH
Holding register write (extended)
0DH
Discontinuous holding register read
(extended)
0EH
Discontinuous holding register write
(extended)
0FH
Multiple coil status change
10H Multiple holding register write
31H MELSEC fixed buffer communications
32H MELSEC random buffer read
33H MELSEC random buffer write
Function
B-4
Extended Extended
MEMOBUS MEMOBUS
Protocol Protocol
(BIN) (ASCII)
2,000 points 2,000 points
2,000 points 2,000 points
125 words 125 words
125 words 125 words
1 point 1 point
1 word 1 word
− −
508 words 508 words
508 words 508 words
507 words 507 words
508 words 508 words
254 words 254 words
800 points 800 points
100 words 100 words
507 words 507 words
508 words 508 words
507 words 507 words