YASKAWA
SIEP C730600 0E YAI Modbus TCP/IP Technical Manual
27
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Prepare and Connect Communication Cable Wiring
The option modular connector CN1 port 1 and port 2 act as a switch to allow for flexibility in cabling topology.
Users may employ a traditional star network topology using either CN1 port 1 or CN1 port 2 on the option.
Alternatively, a daisy-chained approach may be employed by using both CN1 port 1 and CN1 port 2. The daisy-
chained approach reduces the requirements of switch ports. A ring topology is also possible. RSTP is available to
be used in a ring topology.
A - PLC
B - Switch
C - Product Series
Figure 5.29 Prepare and Connect Communication Cable Wiring
6
Related Drive Parameters
These parameters set the drive for operation with the option. Make sure that the parameter settings in this table are
correct before you start network communications.
Note:
Hex.: MEMOBUS addresses that you can use to change parameters over network communication are represented in hexadecimal
numbers.
No.
(Hex.)
Name
Description
Default
(Range)
b1-01
(0180)
Frequency Reference
Selection 1
Selects the input method for frequency reference.
0 : Keypad
1 : Analog Input
2 : Memobus/Modbus Communications
3 : Option PCB
4 : Pulse Train Input
Note:
•
Set
b1-02 = 3 [Run Command Selection 1 = Option PCB]
to use the master device and
serial communications to start and stop the drive. Set
b1-01 = 3
to use the master device to
control the frequency reference of the drive.
•
The default setting is different for different drives. Refer to the instruction manual of your
specific drive for more information.
1
(0 - 4)
b1-02
(0181)
Run Command Selection 1
Selects the input method for the Run command.
0 : Keypad
1 : Digital Input
2 : Memobus/Modbus Communications
3 : Option PCB
7 : AUTO C Term Run
8 : AUTO C Serial Run
9 : AUTO C Option Run
Note:
•
Set
b1-02 = 3
to start and stop the drive with the master device using serial communications.
Set
b1-01 = 3 [Frequency Reference Selection 1 = Option PCB]
to use the master device to
control the frequency reference of the drive.
•
Settings
7
to
9
are available in HV600 software versions PRG: 1011 and later.
1
(0 - 9)
