Understanding The Use Of Virtual Radio Channels (Vrcs) - GE MDS SD Series Technical Manual

•
Local Radio IP Port
the radio's front panel. As a general rule, port numbers below 2000 should be avoided, as
some are reserved for special applications in data networks.
•
Destination IP Address
through the RJ-45 modular connector on the radio's front panel (typically a PC). Any
valid IP address may be entered.
•
Destination IP Port
the connected device (typically a PC). Port numbers below 2000 should be avoided, as
some are reserved for special applications in data networks.
•
TCP Server IP Address
•
TCP Server IP Port
•
Connection Timeout
be dropped following a period of inactivity.
•
Persistent Connection
tinuously, even during periods of inactivity.
•
Modbus TCP <-> RTU Conversion
RTU, and conversely, Modbus RTU to Modbus TCP. This feature eliminates the need for
external equipment to handle the conversion. This can be used in all TCP modes (Server,
Client, Client-server)
•
Committing Configuration
you make them active by clicking this button. The message
the bottom of the screen to confirm the action.
•
Restoring Configuration
ration of the screen, prior to any changes being committed. This might be useful if one or
more settings were inadvertently changed and you wish to return to a "known state." To
restore the prior settings, simply click

Understanding the Use of Virtual Radio Channels (VRCs)

The use of
Virtual Radio Channels (VRCs)
feature. VRCs allow over-the-air data to be directed to specific interface ports (IP or Serial) on
the radio. Conceptually, this can be pictured as creating "pipes" for delivery of data to the de-
sired radio interfaces.
VRC works by associating data from a specific port (IP and Serial) with a VRC channel number
(1, 2, or 3). Each port at the receiving end then filters incoming data based on the associated
VRC number.
NOTE The Virtual Radio Channel (VRC) feature is only supported in Packet and Packet
w/MAC modes. It is not supported in Transparent or x710 mode.
To create the "pipes" that direct data to the desired ports, a route must be established using the IP
Payload Configuration Menu (or the COM1/COM2 Settings Menu for serial data). The default
setting is to listen to all channels.) The
sending the data stream out, while the
Use of these parameters was described earlier in this section.
MDS 05-4864A01, Rev. I
— Used to specify a port number for the RJ-45 modular connector on
— Specifies the IP address associated with the device connected
— Used to specify a port number for the RJ-45 modular connector on
— IP address of the TCP server being used.
— Port number of the TCP server being used.
— Used to specify a time in seconds, after which the connection will
— When set to
Yes
— Used to convert Modbus TCP messages to Modbus
— Once you are satisfied with all of the settings on the screen,
— In some cases, you may wish to revert to the previous configu-
Restore Configuration
may require additional explanation for new users of the
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SD Series Technical Manual
, the connection to the server is maintained con-
Changes Committed
.
parameter is used to specify the VRC used for
parameter specifies the VRC(s) for incoming data.
appears at
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