Advantech EKI-6333AC-4GP, User Manual

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91 EKI-6333AC-4GP User Manual
If there is a Modbus Master device is attached to a certain serial port of the Modbus
Gateway, user has to further specify the Modbus TCP Slave device(s) to send
requests to from the attached Modbus RTU/ASCII Master device.
Figure 3.128 Field Communication > Bus & Protocol > Modbus > Modbus TCP
Slave List
When Add button is applied, the Modbus TCP Slave Configuration screen
appears.
Figure 3.129 Field Communication > Bus & Protocol > Modbus > Modbus TCP
Slave Configuration
The following table describes the items in the previous figure.
Message Buffering Check Enable checkbox to buffer up to 32 requests from Modbus
Master.
If the
Enable checkbox is checked, a Modbus Priority Definition
dialog will appear consequently. So that, the buffered Master
requests can further be configured to prioritize request queue to
transmit to Slave based on Master’s IP address if requests are
coming from remote Master, or based on remote Slave ID if
requests are coming from serially attached Master, or based on
Function Code.
Modbus Priority
Definition The function is only available when Message Buffering is Enable .
Click Edit to fill in the priority settings.

Modbus Priority: A Priority List for setting the priority of
specified Modbus identity. Modbus Priority 1 ~ Modbus
Priority 4.

Priority Base: User can specify a Modbus identity with IP
Address , Slave ID , or Function Code . The buffered
Modbus message that matched the specified identity will be
handled with given priority. The Modbus Master requests can
be buffered to a certain priority queue according to the
Master’s IP address if requests are coming from remote
Master, or the remote Slave’s device ID if requests are
coming from serially attached Master, or the specific function
code that issued by Master.

Enable: Check Enable checkbox to enable the priority
settings.
Save Click Save to save the settings.
Undo Click Undo to cancel the settings.
Item Description
IP Enter the IP address of the remote Modbus TCP Slave device.
Port Enter the TCP port on which the remote Modbus TCP Slave device
listens (to the TCP client session request).
Value Range: 1 ~ 65535.
Item Description