Delta DVW-W1I2-E1 Series User Manual page 29

De lta Indus tr ia l W ire less D VW-W0 1 I2- E1 Ser ies Us er Man ua l
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, the map ID needs to be configured
to 6; when reading PLC station number 6 data connected via RS-485 through MODBUS network, the map ID
needs to be configured to 26.
Attention
For RS-232 and RS-485, the configured map ID range cannot have repeated
regions, because the system forwards the request to serial ports base on the
network port of the map ID in the request data.
_3

MODBUS ASCII / RTU Master
In this mode, the DVW series serve as MODBUS ASCII/RTU Slave. When the device receives master's
MODBUS request, it is packed into MODBUS TCP protocol base on the station ID and the corresponding
relationship from the forward table. Also, MODBUS TCP client can forward request to the server through
DVW series.
3 - 1 0