Lantronix XPort APS: Modbus Protocol User Guide - Page 17

Security Settings

Get Lantronix XPort PDF manuals and user guides View all Lantronix XPort manuals
Add to My Manuals
Save this manual to your list of manuals

Page 17 highlights

3: Configuring Modbus Slave IP address (192) 172.(168) 16.(000) 123.(000) 1): 001-100: 192.168.000.000+SLV 2): 101-199: 192.168.000.050 3): 200-255: 172.016.123.000+SLV A)dd, D)elete, E)xit - select function Close Idle TCP sockets after (3-60 sec, 0=leave open) Unlike earlier versions of the Lantronix Modbus firmware that tried to hold 8 sockets open forever, this version only holds sockets open as required. Entering a 0 holds a single socket open to the last remote Modbus/TCP slave accessed. Otherwise enter values 3 to 60 to automatically close the last socket after 3 to 60 seconds of idle time. Redundant Entry Retries after (15-60 sec. 0=disable feature) Enter the time in seconds for redundant entry retries or set to 0 to disable the feature. A)dd, D)elete, E)xit Select Function You can either add or delete entries in the IP address table. They are automatically sorted into increasing order. Enter E when you are satisfied with the table to return to the main menu. Modbus Address From/To This is the minimum/maximum Modbus slave address (inclusive) to forward to this IP address. Slave IP Address This is the IP address of the remote Modbus/TCP slave. Note the two different ways these IP are interpreted. In the configuration example above, you see the following results:  Polls to Slave #12 will go to IP 192.168.0.12 with Unit ID 12.  Polls to Slave #70 will go to IP 192.168.0.70 with Unit ID 70.  Polls to Slave #112 will go to IP 192.168.0.50 with Unit ID 112.  Polls to Slave #155 will go to IP 192.168.0.50 with Unit ID 155.  Polls to Slave #201 will go to IP 172.16.123.201 with Unit ID 201.  Polls to Slave #244 will go to IP 172.16.123.244 with Unit ID 244. Setting the last/4th IP octet to zero is interpreted as a signal to use the Slave ID as part of the IP. This allows a Modbus/RTU master to access up to 255 remote Modbus/TCP slaves. Setting the last/4th octet of the IP to 1-254 causes all slave polls in this group to be sent to the same IP. 255 is not accepted as the last/4th IP octet. Security Settings Select 7 to configure the Device Server's security setting parameters. 7.Security Settings: SNMP Enabled Modbus Protocol User Guide 17

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
3: Configuring Modbus
Modbus Protocol User Guide
17
Slave IP address (192) 172.(168) 16.(000) 123.(000)
1):
001-100: 192.168.000.000+SLV
2):
101-199: 192.168.000.050
3):
200-255: 172.016.123.000+SLV
A)dd, D)elete, E)xit - select function
Close Idle TCP sockets after (3-60 sec, 0=leave open)
Unlike earlier versions of the Lantronix Modbus firmware that tried to hold 8 sockets open forever,
this version only holds sockets open as required. Entering a
0
holds a single socket open to the
last remote Modbus/TCP slave accessed.
Otherwise enter values 3 to 60 to automatically close the last socket after 3 to 60 seconds of idle
time.
Redundant Entry Retries after (15-60 sec. 0=disable feature)
Enter the time in seconds for redundant entry retries or set to
0
to disable the feature.
A)dd, D)elete, E)xit Select Function
You can either add or delete entries in the IP address table. They are automatically sorted into
increasing order. Enter
E
when you are satisfied with the table to return to the main menu.
Modbus Address From/To
This is the minimum/maximum Modbus slave address (inclusive) to forward to this IP address.
Slave IP Address
This is the IP address of the remote Modbus/TCP slave. Note the two different ways these IP are
interpreted. In the configuration example above, you see the following results:
Polls to Slave #12 will go to IP 192.168.0.12 with Unit ID 12.
Polls to Slave #70 will go to IP 192.168.0.70 with Unit ID 70.
Polls to Slave #112 will go to IP 192.168.0.50 with Unit ID 112.
Polls to Slave #155 will go to IP 192.168.0.50 with Unit ID 155.
Polls to Slave #201 will go to IP 172.16.123.201 with Unit ID 201.
Polls to Slave #244 will go to IP 172.16.123.244 with Unit ID 244.
Setting the last/4th IP octet to zero is interpreted as a signal to use the Slave ID as part of the IP.
This allows a Modbus/RTU master to access up to 255 remote Modbus/TCP slaves. Setting the
last/4th octet of the IP to 1-254 causes all slave polls in this group to be sent to the same IP. 255
is not accepted as the last/4th IP octet.
Security Settings
Select
7
to configure the Device Server’s security setting parameters.
7.Security Settings:
SNMP
.......................
Enabled