Delta DVW SERIES, User Manual, Page: 51 / 108

DVW Series Industrial IEEE 802.11 a/b/g/n Wireless AP/WDS/Client/Gateway User Manual
Parameter Value
Interface RS232, RS485, RS422
Data bit 7, 8
Parity bit None, Even, Odd, Space, Mark
Stop bit
1, 2
Baud rate 110 to 921600 bps
Flow Control None, RTS/CTS, XON/XOFF
Buffer Size 10 (Default Value)
3.3.3 MODBUS Cache Table
The transmit speed of Ethernet interface is faster than serial interface, so the device on Ethernet
side usually need to spend much time to wait the data from serial side after they send the request
message to the device on serial side. MODBUS Cache Table provide user for configure the device
information (ex. Station ID, MODBUS address…etc.), and DVW can send request message for get
the data from the device on serial side according to the MODBUS Cache table in advance. When
the device on Ethernet side sends the request to DVW device, then DVW can response the data
immediately. Because DVW device don’t need to forward the request message to the device on
serial side again, it already get the data in advance. So this only can be enabled when the operation
mode in MODBUS Slave mode .
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