User`s manual

Moxa VPort 16-M12 System Configuration
4-22
Setting Description Factory Default
Host Name User-defined name for identification Blank
Server 1, 2, 3, 4 The server’s URL address with complete CGI commands Ex.
http:// http event server:Port/CGI_Name
Blank
User name The account name for accessing the HTTP server Blank
Password The password for accessing the HTTP server Blank
Once the Http Alarm is triggered, the VPort will send the following HTTP commands to the HTTP event servers.
GET CGI_Name?address=<Hostname or IP Address>&[Custom CGI] HTTP/1.0\r\n
User-Agent: IP camera V1.1\r\n
[Authorization: Basic <Buse64(username:password)>\r\n]
Host: <HTTP Server IP Address>\r\n
Connection: Keep-Alive\r\n
\r\n
Modbus/TCP
Modbus is a serial communications protocol which is often used to connect a supervisory computer with a
remote terminal unit (RTU) in supervisory control and data acquisition (SCADA) systems. To transmit Modbus
over a TCP/IP network, a standard Modbus/TCP protocol is provided. With the support of the Modbus/TCP
protocol, the SCADA/HMI system can directly communicate with the VPort to acquire its operational status.
Setting Description Factory Default
Enable Modbus/TCP Enable the Modbus/TCP protocol Enable
NOTE
For Modbus
address table, please refer to the Modbus_Address_Define.pdf. You can find it on the software CD
or the download center of the Moxa website.
DynaStream™
DynaSteam
TM
is a unique and innovative function that allows for adaptive frame rates in response to events on
the network, such as event triggers and system commands. When network traffic becomes congested,
DynaStream™ allows VPort products to respond to CGI, SNMP, and Modbus commands from SCADA (as well as
the MxNVR-MO4’s VMD, DI, CGI events, and video loss triggers) and automatically decrease the frame rates to
reduce bandwidth consumption. This reserves bandwidth for the SCADA system to maintain Quality of Service
(QoS) and guarantees that the SCADA performance will not be impacted by video traffic. For example, the
frame rate can be set low during regular streaming to reduce bandwidth usage and automatically switch to a
high frame rate during triggered events to ensure quick transmission of critical video data or video streams, or
to provide detailed visual images for problem analysis.
NOTE
For enabling the DynaStream function from CGI commands and Modbus TCP, please refer to the CGI
Commands User’s Manual of VPort SDK PLUS and Modbus Address Table