6.3 MEMOBUS/Modbus Communications
274
YASKAWA
SIEPC71061737B GA800 Drive Technical Reference
Figure 6.4 Wiring Diagram for More than One Drive
Note:
Set DIP switch S2 to the ON position on the last drive of the MEMOBUS/Modbus communication network to enable the termination
resistor.
◆
MEMOBUS/Modbus Drive Operations
Drive parameters will apply to the settings when the drive is running during MEMOBUS/Modbus communications.
This section gives information about the available functions and their related parameters.
■
Executable Functions
A PLC can do these operations with MEMOBUS/Modbus communications. Parameter settings (except
H5-xx
) do not
have an effect on the availability of these operations.
•
Monitor the drive status and operate the drive
•
Set and view parameters
•
Fault Reset Procedure
•
Multi-function input setting (The input command from MEMOBUS/Modbus communications and MFDI terminals
(S1 to S8) are linked by a logical OR operation.)
■
Drive Control
Select the external command that sets the frequency references and motor run/stop with MEMOBUS/Modbus
communications. Use the information in
to set the parameters as specified by the application.
Table 6.3 Required Parameter Settings for Drive Control from MEMOBUS/Modbus
LOCAL Control Selected
No.
Name
Setting Value
External reference 1
b1-01
Frequency Reference Selection 1
2 [Memobus/Modbus Communications]
b1-02
Run Command Selection 1
2 [Memobus/Modbus Communications]
External reference 2
b1-15
Frequency Reference Selection 2
2 [Memobus/Modbus Communications]
b1-16
Run Command Selection 2
2 [Memobus/Modbus Communications]
For more information about operation mode selection, refer to
[Frequency Reference Selection 1]
and
b1-02 [Run
Command Selection 1]
. Refer to H1-xx = 2 [MFDI Function Select = External Reference 1/2 Selection] for more
information about external command.
◆
Communications Timing
To prevent overrun of the slave side, the master cannot send a message to the same drive for a selected length of time.
To prevent overrun of the master side, the slave cannot send a response message to the master for a selected length of
time.
Содержание GA800 Series
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Страница 20: ...i 3 Warranty Information 20 YASKAWA SIEPC71061737B GA800 Drive Technical Reference...
Страница 30: ...1 3 Features and Advantages of Control Methods 30 YASKAWA SIEPC71061737B GA800 Drive Technical Reference...
Страница 58: ...2 9 Installation Methods 58 YASKAWA SIEPC71061737B GA800 Drive Technical Reference...
Страница 144: ...4 4 Start up Procedures 144 YASKAWA SIEPC71061737B GA800 Drive Technical Reference Figure 4 8 Basic Steps before Startup...
Страница 268: ...5 6 Safe Disable Input 268 YASKAWA SIEPC71061737B GA800 Drive Technical Reference...
Страница 306: ...6 3 MEMOBUS Modbus Communications 306 YASKAWA SIEPC71061737B GA800 Drive Technical Reference...
Страница 370: ...7 10 Troubleshooting Without Fault Display 370 YASKAWA SIEPC71061737B GA800 Drive Technical Reference...
Страница 426: ...8 7 Storage Guidelines 426 YASKAWA SIEPC71061737B GA800 Drive Technical Reference...