Moxa VPort 364A-S-SC [56/88] Dynastrea

VPort 364A System Configuration

5-20

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: VPort Encoder 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 the Modbus address table, please refer to the appendix: Modbus Address Table

DynaStream

DynaSteam

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 VPort’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