Chapter 4 Parameters
VFD-EL-W
4-76
Group 9: Communication Parameters
You can set this parameter during operation.
The AC motor drive includes a built-in RS-485 serial interface, marked RJ45 near the control terminals. The RS-
485 pins are defined below.
Serial interface
1: Reserved 2: EV
7: Reserved 8: Reserved
3: GND
4: SG-
8
1
09.00
Communication Address
Settings 1–254 Default: 1
You must set the communication address this drive if the AC motor drive is controlled by RS-485 serial
communication. The communication address for each AC motor drive must be unique.
09.01
Transmission Speed
Default: 1
Settings 0: Baud rate 4800 bps (bits / second)
1: Baud rate 9600 bps (bits / second)
2: Baud rate 19200 bps (bits / second)
3: Baud rate 38400 bps (bits / second)
Sets the transmission speed between the RS-485 master (such as PC) and the AC motor drive.
09.02
Transmission Fault Action
Default: 3
Settings 0:
Warn and keep operating
1:
Warn and ramp to stop
2:
Warn and coast to stop
3:
No warning and keep operating
Determines how the AC motor drive reacts if a transmission fault occurs.
09.03
Time-out Detection
Unit: 0.1
Settings 0.0–120.0 sec. Default: 0.0
0.0 Disable
If Pr.09.03 is not equal to 0.0, and Pr.09.02=0–2, and there is no communication on the bus during the time-
out detection period (set by Pr.09.03), the digital keypad displays “cE10”.
09.04
Communication Protocol
Default: 0
Settings 0: Modbus ASCII mode, protocol <7, N, 2>
1: Modbus ASCII mode, protocol <7, E, 1>
2: Modbus ASCII mode, protocol <7, O, 1>
3: Modbus RTU mode, protocol <8, N, 2>
4: Modbus RTU mode, protocol <8, E, 1>
5: Modbus RTU mode, protocol <8, O, 1>
6: Modbus RTU mode, protocol <8, N, 1>
7: Modbus RTU mode, protocol <8, E, 2>
8: Modbus RTU mode, protocol <8, O, 2>
9: Modbus ASCII mode, protocol <7, N, 1>
10: Modbus ASCII mode, protocol <7, E, 2>
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