Chapter 5 Parameters|VFD-M-D Series
5-72 Revision Jan. 2007, MDE2, SW V1.05
Group 8: Communication Parameters
There is a built-in RS-485 serial interface, marked RJ-11(jack) near to the control terminals. The pins
are defined below:
6
1
1: EV
2: GND
3: SG-
4: SG+
5: Reserved
6: Reserved
NOTE: 1. When connecting to the communication connector, please use RJ11 6P2C/6P4C
2. When connecting to the PU, please use RJ12.
Each VFD-M-D AC drive has a pre-assigned communication address specified by Pr.8-00. The
RS485 master then controls each AC motor drive according to its communication address.
8 - 00 Communication Address
Settings 01 to 254 Factory Setting: 01
If the AC motor drive is controlled by RS-485 serial communication, the communication
address for this drive must be set via this parameter. And the communication address for each
AC motor drive must be different and unique.
8 - 01 Transmission Speed
Factory Setting: 02
Settings 00 Baud rate 4800 bps (bits / second)
01 Baud rate 9600 bps
02 Baud rate 19200 bps
03 Baud rate 38400 bps
This parameter is used to set the transmission speed between the RS485 master (PLC, PC,
etc.) and AC motor drive.
8 - 02 Transmission Fault Treatment
Factory Setting: 03
Settings 00 Warn and keep operating
01 Warn and RAMP to stop
02 Warn and COAST to stop
03 No warning and keep operating
This parameter is set to how to react if transmission errors occur.
See list of error messages below (see section 3.6.)
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