L3 Nova Engineering NovaRoam MH902, Руководство пользователя

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Delete. To delete an entry from the DNP table, select the entry in the table and then press the
Delete button.
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Output Delay. This value defines the amount of time (in milliseconds) between transmitting DNP
packets to the NovaRoam’s serial interface after they are received over the wireless interface.
This feature has been added to accommodate legacy equipment that cannot receive data packets
as quickly as the NovaRoam can deliver them. The default value is 80 milliseconds.
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Input Timeout. This value defines the amount of time (in milliseconds) that the serial interface
will wait before sending a packet after data is received. The default value is 60 milliseconds.
NovaRoams include a feature that allows multiple SCADA masters using the same SCADA address to be
connected to a single NovaRoam. When using this feature, the connected NovaRoam continually
monitors DNP traffic. In the case of multiple SCADA masters using the same SCADA address, the
NovaRoam will consider the master to be the device that sent the most recent data packet. If the active
SCADA master experiences a failure, the NovaRoam will automatically forward packets from the backup
SCADA master.
Configuration of this feature is very simple. When building the SCADA table, each SCADA master will
use the same SCADA Address. The IP address will be unique for each SCADA master.
For example, assume there are two SCADA master devices, one with an IP address of 192.168.200.20
(primary SCADA master) and one with an IP address of 192.168.200.30 (secondary SCADA master). To
create the table entry for the primary SCADA master, enter 192.168.200.20 into the IP Address field.
Enter 25 into the SCADA address field. To create the table entry for the secondary SCADA master, enter
192.168.200.30 into the IP Address field. Enter 25 into the SCADA address field.
Repeater Serial Mode
The NovaRoam Repeater serial port mode provides the same configuration parameters as the DNP serial
port mode – see above for details. As shown in the figure below, one additional parameter is available
when the Repeater serial mode is selected.
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Enable Battery Testing. Provides the ability for NovaRoams to occasionally test the status of a
connected backup battery system. When this feature is enabled the results of battery tests can
be seen on the Batt Status Tab of the Statistics page.
Serial Port Tab