Yaskawa Matrix Converter - Manual (Page 250)

Individual Functions
6-
85
* Set H5-01 to 0 to disable MxC responses to MEMOBUS communications.
MEMOBUS communications can perform the following operations regardless of the settings in b1-01 and b1-
02.
• Monitoring operation status from the PLC
• Setting and reading parameters
• Resetting errors
• Inputting Multi-Function Commands
An OR operation is performed between the Multi-Function Commands input from the PLC and commands
input from multi-function digital input terminals S3 to S12.
„ Message Format
In MEMOBUS communications, the master sends commands to the slave, and the slave responds. The mes-
sage format is configured for both sending and receiving as shown below, and the length of data packets is
changed by the command (function) contents.
The space between messages must support the following.
Fig 6.59 Message Spacing
Slave Address
Set the MxC address from 0 to 32 Hex. If the address is set 0, commands from the master will be broadcast
(i.e., the MxC will not return responses).
H5-10
Unit Selection for
Memobus Regis-
ter 0025H
Selects the units used for MEMOBUS regis-
try 0025H (monitors the output voltage refer-
ence).
0: 0.1 V units
1: 1 V units
0 or 1 0 No A A A
MEMOBUS 25H
UNIT
Slave address
Function code
Data
Error check
Parameter
Number
Name
Description
Setting
Range
Default
Change
during
Run
Control Methods
Display V/f
Open
Loop
Vector
Flux
Vector
Command message Response message Command message
PLC to MxC PLC to MxC MxC to PLC
Time (Seconds)
24 bits long H5-06
setting 24 bits long 5 ms min.