YASKAWA GA700 - Page 844

11.7 F: Options
844 YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual
communication option. The drive sends these commands and responses between the controller (Host device),
master drive (Drive 0), and the slave drives (Drive 1 to Drive 4).
• Commands: Run command and frequency reference
• Output frequency and drive status (during run, faults)
• Read and write parameters
• Read monitors
NOTICE: When you use Gateway Mode, do not install the communication option in slave drives. Failure to obey can cause
problems with synchronization of drive commands and responses.
Note:
• Response speed with the communication option is slower than with point-to-point communications.
• Set H5-03 [Communication Parity Selection] to the same value on the master drive and slave drives.
Table 11.55 shows the parameter settings when you connect 4 slave drives:
Table 11.55 Parameter Settings to Connect 4 Slave Drives
F6-16
[Gateway
Mode]
H5-01
[Drive Node
Address]
H5-02
[Communi
cation
Speed
Selection]
H5-03
[Communi
cation
Parity
Selection]
H5-06
[Drive
Transmit
Wait Time]
H5-09
[CE
Detection
Time]
b1-01
[Frequency
Reference
Selection 1]
b1-02
[Run
Command
Selection 1]
Drive0
(Master
Drive)
1 - 4 1F (Default)
*2 *2
5 ms
*3
2.0 s
minimum
*4
3 [Option
PCB]
3 [Option
PCB]
Drive1
(Slave Drive
1)
0 01
*2 *2
5 ms
*3
0.9 s
minimum
*4
2
[MEMOBUS/
Modbus
Communica
tions]
*5
2
[MEMOBUS/
Modbus
Communica
tions]
*5
Drive2
(Slave Drive
2)
0 02
*2 *2
5 ms
*3
0.9 s
minimum
*4
2
[MEMOBUS/
Modbus
Communica
tions]
*5
2
[MEMOBUS/
Modbus
Communica
tions]
*5
Drive3
(Slave Drive
3)
0 03
*2 *2
5 ms
*3
0.9 s
minimum
*4
2
[MEMOBUS/
Modbus
Communica
tions]
*5
2
[MEMOBUS/
Modbus
Communica
tions]
*5
Drive4
(Slave Drive
4)
0 04
*2 *2
5 ms
*3
0.9 s
minimum
*4
2
[MEMOBUS/
Modbus
Communica
tions]
*5
2
[MEMOBUS/
Modbus
Communica
tions]
*5
*1 Set the number of connected slave drives.
*2 Make sure that you set the communications speed and communications parity to the same value on the master drive and slave drives.
*3 To correctly detect the response timeout, do not change the value of H5-06 from the default value.
*4 Set H5-09 ≥ 0.9 s. When H5-09 < 0.9, the drive will detect CE before it detects a response timeout.
*5 Set the Run command and frequency reference source on slave drives to MEMOBUS/Modbus communications.
Note:
• If the timeout or message occurs 10 consecutive times, the master drive stops transmitting to the slave drives. Reset the fault to restart
communication.
• If you change the access command before the MEMOBUS/Modbus access completion flag turns on, the drive will not execute the
command from before.