Communication Parameters
Communication Address Mem Addr 0900H(42305)
Range: 1 to 254 Default Setting: 1
• If the AC drive is controlled by RS-485 serial communication, the communication
address must be set via this parameter.
Transmission Speed Mem Addr 0901H(42306)
Range: 0 to 2 Default Setting: 1
Setting 0: 4800 baud data transmission speed
1: 9600 baud data transmission speed
2: 19200 baud data transmission speed
• Users can set parameters and control the operation of the AC drive via the
RS-485 serial interface of a personal computer. This parameter is used to set the
transmission speed between the computer and AC drive.
Communication Protocol Mem Addr 0902H(42307)
Default Setting: 0
Settings: 0 MODBUS ASCII mode.
<7 data bits, no parity, 2 stop bits>
1 MODBUS ASCII mode
<7 data bits, even parity, 1 stop bit>
2 MODBUS ASCII mode
<7 data bits, odd parity, 1 stop bit>
3 MODBUS RTU mode
<8 data bits, no parity, 2 stop bits>
4 MODBUS RTU mode
<8 data bits, even parity, 1 stop bit>
5 MODBUS RTU mode
<8 data bits, odd parity, 1 stop bit>
9-02
9-01
9-00
Chapter 4: AC Drive Parameters
GS1 Series AC Drive User Manual
4–46