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EKI-6333AC-4GP User Manual
3.5
Field Communication
3.5.1
Bus & Protocol
The gateway may equip a serial port for various serial communication use through
connecting the RS-232 or RS-485 serial device to an IP-based Ethernet LAN. These
communication protocols make user access serial devices anywhere over a local
LAN or the Internet easily. They can be “Virtual COM” and “Modbus”.
3.5.1.1
Port Configuration
To access this page, click
Field Communication
>
Bus & Protocol
>
Port
Configuration
.
In
Port Configuration
page, there is only one configuration window for the serial port
settings. The
Configuration
window can let you specify serial port parameters
including the operation mode being “Virtual COM”, “Modbus” or disabled, the
interface being “RS-232” or “RS-485”, the baud rate, the data bit length, the stop bit
length, the flow control being “RTS/CTS”, “DTS/DSR” or “None”, and the parity.
Figure 3.106 Field Communication > Bus & Protocol > Port Configuration
When
Edit
button is applied, a screen similar to this appears.
Figure 3.107 Field Communication > Bus & Protocol > Port Configuration
The following table describes the items in the previous figure.
Item
Description
Serial Port
It displays the serial port ID of the serial port. The number of serial
ports varies from the purchased model.
Operation Mode
It displays the current selected operation mode for the serial
interface. Depending on the purchase model, the available modes
can be
Disable
,
Virtual COM
and
Modbus
.
Interface
Select
RS-232
or
RS-485
physical interface for connecting to the
access device(s) with the same interface specification.
Baud Rate
Select the appropriate baud rate for serial device communication.
RS-232:
1200 / 2400 / 4800 / 9600 / 19200 / 38400 / 57600 /
115200
RS-485
can use higher baud rate for 230400 and 460800. It
depends on the cable length and the installed environment.
The longer cable, the lower baud rate for it.
Data Bits
Select 8 or 7 for data bits.
Stop Bits
Select 1 or 2 for stop bits.
Flow Control
Select None / RTS, CTS / DTS, DSR for flow control in RS-232
mode. The supporting of flow control depends on the purchased
model.
Parity
Select None / Even / Odd for Parity bit.
Action
Click
Edit
to change the operation mode, or modify the parameters
mentioned above for the serial interface communication.
Save
Click
Save
to save the settings.
Undo
Click
Undo
to cancel the settings.