YASKAWA MP3000 Series - Page 421

2.16 Details on Protocols
MEMOBUS Protocol
2-403
Ethernet Communications
 MEMOBUS Command
The commands that make up the MEMOBUS messages are identified by function codes and provide the func-
tions given in the following table.
Function Code
Sub Function
Code
Function
01 hex − Reads the states of coils.
02 hex
− Reads the states of input relays.
03 hex
− Reads the contents of hold registers.
04 hex
− Reads the contents of input registers.
05 hex
− Changes the state of a single coil.
06 hex
− Writes to a single hold register or one word.
08 hex
− Performs a loopback test.
0F hex
− Changes the states of multiple coils.
10 hex
− Writes to multiple hold registers.