Yaskawa MP940 Reference Manual - Manual (Page 106)

MotionSuite™ MP940 Machine Controller Reference Manual Serial Transmission Function
4-15
Transmission Processing Time for Response Messages by the Master
• This is the time needed to execute processing after a response message from
a slave has been received by a master, such as a computer.
• This time depends on each of the master processing times.
• This is normally 1 ~ 2 scans, and depends on the machine controller scan
time.
Serial Transmission Protocol
The MP940 module starts with the Yasakawa standard Memobus
transmission protocol, and is compatible with a variety of transmission
protocols.
We have prepared standard functions for the Melsec communication protocol
for connection with controllers made by Mitsubishi Electric, Inc.
Memobus Communication
Memobus communication is a form of message transmission that obeys the
Memobus protocol. A table is given below of the commands and registers
which correspond to Memobus.
*1 Memobus reference number
This assigns a start number range for coils, input relays, input regis-
ters, and storage registers. The start number is used in Yaskawa stan-
dard Memobus protocol messaging.
*2. Memobus command
This is the command identification number set in the Memobus pro-
tocol.
Type
Memobus
Reference Number *1
Memobus
Command *2
MP940
Start Number *3 Register Number *4
Coil 000001 - 0XXXXX 01H, 05H, 0FH 000000- MB000000-
Input Relay 100001 - 1XXXXX 02H 00000- IB00000-
Input Register 300001 - 3XXXXX 04H 00000- IW0000-
Storage Register7 400001 - 4XXXXX 05H 00000- MW00000-