Chapter 9 – RS485/Modbus RTU Communications
9-3
9.2.5
Communication
Parameters
Parameter Display
Name
Set value
Unit
Default
DRV_03
Drive mode
Drive mode
Int. 485
Fx/Rx-1
DRV_04
Freq mode
Freq mode
Int. 485
KeyPad-1
DRV_91
Drive mode2
Drive mode 2
KeyPad
Fx/Rx-1
Fx/Rx-2
Fx/Rx-1
DRV_92
Freq mode2
Freq mode 2
KeyPad-1
KeyPad-2
V1
V1S
I
V1+I
Pulse
KeyPad-1
I/O_20~27 M1 ~ M8
Programmable Digital
Inputs
Loc/Rem
I/O_90
Inv No
Inverter number
1~250
1
I/O_91
Baud rate
Communication speed
1200 bps
2400 bps
4800 bps
9600 bps
19200 bps
9600
bps
I/O_92
COM Lost
Cmd
Operating mode when
communication signal
is lost
None
FreeRun
Stop
None
I/O_93 COM
Time
Out
Time to determine
whether
Communication signal
is lost.
0.1~120.0 sec
1.0
I/O_94 Delay
Time
Communication
Response Delay Time
2 to 1000 msec msec
5.0
9.3
Operation
9.3.1
Operating
Steps
1) Check whether the computer and the inverter are connected correctly.
2) Turn ON the inverter. But, do not connect the load until stable communication between the computer and the
inverter is verified. Start the operating program for the inverter from the computer.
3) Operate the inverter using the operating program for the inverter.
4) Refer to “9.6
Troubleshooting” if the communication is not operating normally.
5) Turn the inverter J3 switch ON to connect the terminating resistor for the end of network.
* Connect to C+,C-,CM terminal on the control terminal. Pay attention to po, -).
* Maximum number of connected drives is 31.
Содержание RSi SG Series
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