Serial Configuration; Modbus Gateway - Delta DVW-W1I2-E1 Series User Manual

Configure IP address and identify DVW-W01I2-E1 series in TCP/IP
network.
IP subnet mask
Set the IP subnet mask of router LAN ports. (Example: 255.0.0.0 is
Type A address; 255.255.0.0 is Type B address; 255.255.255.0 is
Type C adderss)
Gateway IP
Connect DVW-W01I2-E1 to WAN IP gateway.
Primary DNS
Connect DVW-W01I2-E1 to primary DNS in WAN configuration that
translates domain names into IP addresses.
Starting IP address
The starting IP address provided by DHCP server address pool.
Ending IP address
The ending IP address provided by DHCP server address pool.

3.3 Serial configuration

DVW-W01I2-E1 contains MODBUS gateway, serial server and transparent transmission functions. The
MODBUS gateway function allows data to be transferred from MODBUS to Ethernet and vice versa. While
serial server and serial port transparent transmission modules can provide real-time networking to access
serial devices at any time or locations.

3.3.1 MODBUS gateway

MODBUS gateaway allows DVW device to perform format conversion and data transfer. (Convert Modbus
RTU/ASCII to Modbus TCP).
3.3.1.1 RS-485 gateway

MODBUS ASCII / RTU Slave
In this mode, the DVW series serve as MODBUS TCP server. When the device receives client's MODBUS
request, it is packed into MODBUS ASCII/RTU protocol and corresponding serial ports can be confirmed
base on the map ID. Also, MODBUS ASCII/RTU master can forward request to slave through DVW series.
For instance, RS-232 serial port slave ID setting range is 1-20, map ID setting range 1-20; while RS-485 serial
port slave ID setting range is 1-20 and map ID setting range is 21-40. When users request reading PLC
station number 6 data connected via RS-232 through MODBUS network port, the map ID needs to be
configured to 6; when reading PLC station number 6 data connected via RS-485 through MODBUS network
port, the map ID needs to be configured to 26.
Description
Ch ap te r 3 Fu nc tion G uide
Default value
192.168.1.5
255.255.255.0
1 day
192.168.1.100
192.168.1.250
3_
3 - 5