6
-96
* 1. Set H5-01 to 0 to disable Inverter responses to MEMOBUS communications.
* 2. Applicable for G7-Series Inverters with software versions PRG 1039 and later.
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 constants
• 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 contact 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 6.61 Message Spacing
Slave Address
Set the Inverter address from 0 to 20 Hex. If you set 0, commands from the master will be broadcast (i.e., the
Inverter will not return responses).
H5-10
*2
Unit Selection
for MEMOBUS
Register 0025H
Selects the units used for MEMO-
BUS registry 0025H (monitors
the output voltage reference).
0: 0.1 V units
1: 1 V units
0 or 1 0 No A A A A A 436H
MEMOBUS
25H UNIT
Slave address
Function code
Data
Error check
Con-
stant
Number
Name
Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Control Methods
MEMO
BUS
Regis-
ter
Display
V/f
V/f
with
PG
Open
Loop
Vector
1
Flux
Vec-
tor
Open
Loop
Vector
2
Command message
Response message
Command message
PLC to Inverter PLC to InverterInverter to PLC
Time (Seconds)
24 bits long
H5-06
setting
24 bits long
5 ms min.
TOE-S616-60.1.book 96 ページ ２０１７年８月４日 金曜日 午後３時４１分
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