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EKI-6333AC-4GP User Manual
When
Edit
button is applied, the
Gateway Mode Configuration
screen appears.
Figure 3.127 Field Communication > Bus & Protocol > Modbus
The following table describes the items in the previous figure.
Gateway Mode
Specify the Modbus gateway mode for the selected serial port.
It can be
Disable
,
Serial as Slave
or
Serial as Master
. A serial
port can be attached with one Modbus Master, or daisy-chained a
group of Modbus Salve devices.
Disable:
Select this to disable the respective Modbus
gateway function for the selected serial port.
Serial as Slave:
Select this when the attached serial
device(s) are all Modbus Slave devices.
Serial as Master:
Select this when the attached serial device
is a Modbus Master device.
Device Slave Mode
Check
Enable
checkbox to activate the integrated Modbus Salve
function, and enter the preferred ID for the integrated Modbus
slave. So that, it can function as a Modbus Slave device, and can
be accessed with legacy Modbus Function Code from a SCADA
management system. Supported Modbus commands are listed in
the following table.
Value Range: 1 ~ 247.
Listen Port
Specify the listen port number if Slave device(s) is attached to the
selected serial port. It is a don’t care setting if a Master device is
attached.
Value Range: 1 ~ 65535.
Note:
Use different port number among the serial ports for the
product with multiple serial ports.
Serial Protocol
Select the serial protocol that is adopted by the attached Modbus
device(s). It can be
RTU
or
ASCII
.
Enable
It displays whether the specific Modbus serial port is enabled or
disabled. To enable or disable Modbus serial port, go to
Field
Communication
>
Bus & Protocol
>
Port Configuration
, and
set the operation mode as Modbus.
Save
Click
Save
to save the settings.
Undo
Click
Undo
to cancel the settings.
Item
Description
Response Timeout
This sets the response timeout of the slave after master request
sent. If the slave does not response within the specified time, data
would be discarded.
This applies to the serially attached Master sent request over to
the remote Slave or requests send from the remote Master sent to
the serially attached Slave.
Value Range: 1 ~ 65535.
Item
Description
