S&C Instruction Sheet 461-509
75
Confi guring the Communication Gateway
Figure 69. Configuring the Remote Web UI DNP3 status points (binary inputs).
STEP 5.
If an S&C SpeedNet™ Radio is used for the fi eld area network radio, the remote
Web user’s computer will require an additional setting to be updated to enable
Web access. The user must reduce the MTU (maximum transmission unit) size
to a value of 500 or lower. S&C recommends using an MTU size of 500 for
optimal performance. To change the MTU size, the following command can be
used on a Windows 10 machine: netsh interface ipv4 set sub-interface “Local
Area Connection” mtu=500 store=persistent.
STEP 6.
From DNP3 Master/Scada Master, send the following command to the status
point confi gured in “Command (Binary Output)” step:
• Direct Relay control command
(a) Type = Latching Relay
(b) Value = Latch On (To Enable)
STEP 7.
Check the
Binary Input
status points that align with the status points
confi gured in “Binary Input” step.
• 8:
Communication Gateway remote web user interface access enabled
status point refl ects “1”/”True” value
• 9:
Communication Gateway remote web user interface access enabled
via DNP3
status point refl ects “1”/”True” value
STEP 8.
When the
Binary Input
status points refl ect the values in Step 7, the user
should confi rm connectivity to the communication gateway from the user’s
computer confi gured with the workaround and connected into the network
connected to the SpeedNet Radio headend point.
• URL: IP address associated with communication gateway’s Eth2 port
