Industrial Managed
Ethernet Switch – EH9711
User Manual
Page
146
of
223
Figure 2.120 Webpage to Configure Modbus Setting
Table 2.108 Descriptions of Modbus Setting PortConfiguration
Label
Description
Factory
Default
Modbus Address
Identifier for modbus slave device, range from 1 to 247
1
Click
Save
button to save the setting configuration. Click
Reset
button to undo any changes made locally and revert to
previously saved values.
Users can use Modbus TCP/IP compatible applications such as
Modbus Poll
to configure the switch. Note that Modbus Poll
can be download
from
. The Modbus Poll 64-bit version 9.2.2, Build 1343 was
used in this document. Atop does not provide this software to the users. Tutorial of Modbus read and write examples are
illustrated below.
Note
:
The switch only supports Modbus function code 03, 04
(
for Read
)
and 06
(
for Write
).
Read Registers (This example shows how to read the switch’s IP address.)
Figure 2.119 Mapping Table of Modbus Address for Switch’s IP Address
1.
Make sure that a supervising computer (Modbus Master) is connected to your target switch (Modbus Slave) over
Ethernet network.
2.
Launch
Modbus Poll
in the supervising computer. Note a registration key may be required for a long-term use of
Modbus Poll after 30-day evaluation period. Additionally, there is a 10-minute trial limitation for the connection to
the managed switch.
