Programmable Serial-to-Ethernet Device Server
PDS Series User Manual, Version 2.5, Mar. 2019
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The following is an overview of the parameters contained in the
Configure
COM Port
section:
Item
Description
Default
Port (COM0 for ALL PORTS)
The COM Port number on the PDS series.
COM1
Baud Rate
This parameter is used to set the Baud Rate for the COM
ports.
9600
Data Bits
This parameter is used to set the Data Size for the COM ports.
8
Parity
This parameter is used to set the Parity for the COM ports.
None
Stop Bits
This parameter is used to set the Stop Bits for the COM ports.
1
Rx FIFO Trigger Level
This option is used to set the number of characters that the
COM Port can receive at once time, the PDS series will move
the data from the COM Port FIFO to the PDS series. If the
amount of data transferred is large and uses a transfer speed
(115200 bps), setting a smaller value is helpful in preventing
data loss.
1
Data Buffered Delay Time
(DBDT)
When the COM port does not receive data from devices
connected over the period of DBDT setting, the PDS series will
determine that the data transfer is over and return to process
next tasks.
0
Data Buffered Trigger Level
(DBTL)
Set the receive buffer size. When the buffer receives the data
reaches to value, it will be sent out.
Settings range: 1 ~ 1460 Bytes
1460
End Char
The PDS series outputs an Ethernet packet immediately after
the ending-chars pattern is identified from the incoming serial
data.
0
(Disabled)
Operation Mode
M0: Transparent Mode (Multi-echo mode)
M1: Slave Mode (Single-echo mode)
M2: Half-Slave Mode (Is situated between M0 and the M1
mode)
M3: Modbus Gateway
The more detailed information regarding M0, M1, M2 and M3
modes, please refer to the
Section 4.3.1 “Operation Mode:
M0
