Appendix 4 MODBUS Communication
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223
MODBUS Communication Parameters Set
To communication with PLC, the ac drive must be programmed. Here are some
communication parameters that should be modified in advance.
“
○
”write-in is possible during running; “×”write-in is impossible during running but
possible during stop.
Function
code
Paramete
r name
Setting range
Default
Chan
ge
MODBUS
address
P0.01
Frequenc
y setting
mode 1
0: NULL
1: Keyboard digital
setting
2: Terminal AI1
3: Terminal AI2
4: Pulse input
5: Serial communication
* NOTE 1
6: Multi-speed running
7: Terminal Up/Down
8: Programmed running
(PLC)
9: PID
10: Wobble frequency
running
1 ×
0002H
frequency
range: 0
～
650.0Hz
P0.02
Frequenc
y setting
mode 2
Idem,0
～
6
0 ×
0002H
Communic
ation
frequency
instructions
P0.04
Running
comman
d control
mode
select
0: Keyboard control
1: Terminal control
1(STOP inactive)
2: Terminal control
2(STOP active)
3: Serial communication
1(STOP inactive)
4: Serial communication
2(STOP active)
5: Terminal control 3
(STOP and JOG invalid)
0 ×
0001H
communica
tion control
instruction
is operation
signal
