Telemetry server data references

The Telemetry Server interfaces with Application Server to link data from widely dispersed equipment, using DNP3, IEC-60870, or Modbus protocols. This section describes how to create dynamic and static data references to the Telemetry Server, and is organized as follows:

• Telemetry server dynamic tags

• DNP3 data references

• IEC 60870-5 dynamic data references

• Modbus data references

• Telemetry server static data references

  Note: The IEC-60870 protocol is not supported in AVEVA Telemetry Server version 1.0.

Dynamic data references to the Telemetry Server use the following syntax:

Telem_Server_<ScopeName>:%<OutstationFullName>;<PointType>;<SyntaxSpecificItems>;[<PointName>]

• The <space> character is valid in Telemetry Server references.

• <ScopeName> is not case sensitive. However, the rest of the reference string is case-sensitive.

• The percent sign (%) that precedes the OutstationFullName indicates that the reference is dynamic. Static data references do not include the percent sign. See Telemetry server static data references for more information.

• If [<PointName>] is specified, it must be enclosed in brackets.

Note that Telem_Server_ is always prepended to the ScopeName (computer name) at the beginning of the reference string. Dynamic tags automatically populate some of the required fields in the Telemetry Server dashboard. This helps to reduce the amount of duplicated configuration data needed for each point. For information about creating dynamic tags, see Telemetry server dynamic tags.

Using attributes on UserDefined objects (UDOs) is a recommended best practice to create the I/O interface to the Telemetry Server. Once you create the attribute and enable I/O, create the I/O reference using the applicable protocol and syntax. See The I/O Feature for more information about enabling I/O.

Point Name Format

When creating a reference and you include the optional parameter, "Point Name," the Point Name MUST be enclosed in [brackets] as the following example shows:

Telem_Server_Node-12:%Group.DNP3_Outstation;AI;100;[Point_Name]

Invalid Characters

The following are invalid characters that cannot be used within Telemetry Server OutStationFullNames or PointNames:
< > # % \ " ; : ? . @ & = + $ { } | ^ [ ]

The % . [ ]and : characters are used in creating Telemetry Server references.

• The "%" character designates the reference as a dynamic tag.

• The "." character is used as a separator between the GroupName and OutstationName within the OutStationFullName, and can be used as part of a Point Name when creating a point in a different group than the Outstation. The syntax for this is <GroupName>.<PointName>.

• The ":" character is used to separate the ScopeName from the Telemetry Server tag information.

• The square bracket characters "[ ]" are used to enclose the Point Name, when the Point Name is specified and cannot be used anywhere else in the reference.