YASKAWA GA700 Technical Manual page 844

11.7 F: Options
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:
F6-16
[Gateway
Mode]
Drive0
1 - 4
(Master
Drive)
Drive1
0
(Slave Drive
1)
Drive2
0
(Slave Drive
2)
Drive3
0
(Slave Drive
3)
Drive4
0
(Slave Drive
4)
*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.
844
Table 11.55 Parameter Settings to Connect 4 Slave Drives
H5-02
H5-01
[Communi
[Drive Node cation
Address] Speed
Selection]
1F (Default) *2
01
*2
02
*2
03 *2
04 *2
YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual
H5-03
H5-06
[Communi
[Drive
cation
Transmit
Parity
Wait Time]
Selection]
*2 5 ms
*3
5 ms
*2 *3
5 ms
*2
*3
*2 5 ms
*3
*2 5 ms
*3
H5-09 b1-01
[CE [Frequency
Detection Reference
Time] Selection 1]
2.0 s 3 [Option
minimum PCB]
*4
2
[MEMOBUS/
0.9 s
Modbus
minimum
*4
Communica
tions]
*5
2
[MEMOBUS/
0.9 s
Modbus
minimum
*4
Communica
tions]
*5
2
[MEMOBUS/
0.9 s
Modbus
minimum
*4
Communica
tions]
*5
2
[MEMOBUS/
0.9 s
Modbus
minimum
*4
Communica
tions]
*5
b1-02
[Run
Command
Selection 1]
3 [Option
PCB]
2
[MEMOBUS/
Modbus
Communica
tions]
*5
2
[MEMOBUS/
Modbus
Communica
tions]
*5
2
[MEMOBUS/
Modbus
Communica
tions]
*5
2
[MEMOBUS/
Modbus
Communica
tions]
*5