Comtrol Modbus Server - Manual (Page 29)

DeviceMaster Modbus Server User Guide: 2000535 Rev. C Embedded Web Pages - 29
Edit Port Configuration Page
Name Value(s) Description
Serial Configuration
Mode
All models, except 2-port
models:
• RS-232 (default)
• RS-422
• RS-485
2-port models:
• RS-232 (default)
• RS-422
• RS-485_2-wire
• RS-485 4-wire Master
• RS-485 4-wire Slave
Selectable serial mode of communications.
Baud Rate
300, 600, 1200, 2400,
4800, 9600, 19200, 38400
(default), 57600, 115200,
230400
Selectable serial port baud rates.
Parity
None (default)
Even
Odd
Selectable parity values.
Data Bits 5, 6, 7, 8 (default) Selectable data bit values.
Stop Bits 1(default) or 2 Selectable stop bit values.
Flow
None (default)
RTS/CTS
XON/XOFF
Half-Duplex
Selectable flow control values.
Rx Timeout Between
Packets
0-65535
(default = 50)
Receive time-outs between packets in
milliseconds. This is the maximum spacing
between received bytes allowed before
Modbus/RTU messages/responses received
over both the serial and Ethernet TCP/IP
interface are expected to be complete.
Note: If this value is set too low, incomplete
and/or invalid Modbus/RTU
messages may be incorrectly detected.
Duplicate Serial
Configuration For All
Ports
N/A
If selected, will apply the serial port
configuration to all serial ports.
Modbus/RTU Protocol Settings
Device Response
Timeout
0 to 65535 ms.
(Default=1000 ms)
The maximum allowable time for a slave
Modbus/RTU to respond to a message before
the message is considered timed out.