MMS Address Format

NI-Industrial Communications for IEC 61850 15.0 Help

Edition Date: December 2015

Part Number: 373800D-01

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The manufacturing message specification (MMS) address specifies data in the MMS hierarchy. The NI-Industrial Communications for IEC 61850 software supports the point MMS address and the data set MMS address. The point MMS address specifies the reference to a data object or a data attribute using the MMS address scheme. The point is NamedVariable in MMS. The data set MMS address specifies the reference to a data set using the MMS address scheme.

The following are the MMS address formats.

  • Point MMS address: DNName/LNName$FCName$DOName$SDOName$DAName
  • Data set MMS address: DNName/LNName$DataSetName

You must use a slash (/) to separate DN from LN. You must use a dollar sign ($) to separate LN from succeeding items. You can use a-z, A-Z, 0-9, and the underscore (_) in the name of each item. Numbers cannot be the first character of the item name. The maximum length of an MMS address is 97 characters. The indentation level of the item in the MMS address is the hierarchic level or depth. The indent value is a non-negative integer.

Refer to the IEC 61850-8-1:2004 standard for more information about the MMS address formats.

Point MMS Address

The following table lists the items in the point MMS address.

Item Indent Data Type Description
DN 0 Structure The name of the domain. The maximum length of DN is 32 characters.
LN 1 Structure The name of the logic node. If an MMS address does not contain LN, this address cannot contain succeeding items of LN, including FC, DO, SDO, and DA.
FC 2 Structure The name of the functional constraint. If an MMS address does not contain the FC, this address cannot contain succeeding items of FC, including DO, SDO, and DA.
DO 3 Structure The name of the data object. If an MMS address does not contain the DO, this address cannot contain succeeding items of DO, including SDO and DA.
SDO Non-array SDO: 4 Structure The name of the sub-data object. An MMS address contains zero or more instances of SDOs. The format of an array SDO is SDO$[index], where [index] is the element of the array SDO. You must use a dollar sign ($) to separate the array SDO and the element.
Elements of an array SDO: 5 Array
DA Non-array DA—The indentation level increases by one. Any data type except structure The name of the data attribute or the sub-data attribute. The data attribute in the MMS address does not include the Structure data.DA is a leaf point. Leaf points do not contain child points. The format of an array DA is DA[index], where [index] is the element of the array DA. No dollar sign ($) exists between DA and the element.
Element of an array DA—The indentation level increases by two. Array

Examples

  • E1Rly1/LLN0$ST$Mod$origin
  • E1Rly1/PDIF1$DC$TmASt$crvPts$[0]$xVal
  • E1Rly1/PDIF1$DC$TmASt$crvPts$[0]$xVal[1]

Data Set MMS Address

The following table lists the items in the data set MMS address.

Item Indent Data Type Description
DN 0 Structure The name of the domain. The maximum length of DN is 32 characters.
LN 1 Structure The name of the logic node. If an MMS address does not contain the LN, this address cannot contain succeeding DataSetName item.
DataSetName 2 Any type except structure The name of the data set.

Examples

  • E1Rly1/LLN0$STDataSet

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