ST_MMS_ParameterSupportOptions

Parameters that will be negotiated between the two communication partners during the connection establishment (Association).

TYPE ST_MMS_ParameterSupportOptions:
STRUCT
    str1 : BOOL := TRUE;
    str2 : BOOL := TRUE;
    vnam : BOOL := TRUE;
    valt : BOOL := TRUE;
    vlis : BOOL := TRUE;
END_STRUCT
END_TYPE

str1: When this is set the device supports the Array-Type-Identifier for the type-description of the Array-Variables.

str2: When this is set the device supports the Structure-Type-Identifier for the type-description of the structured variable.

vnam: When this is set the device supports the named-access in variableSpecification.

valt: When this is set the device supports the so-called AlternateAccess. Indicated access to Array-Elements (INDEX or INDEX-RANGE).

vlis: When this is set the device supports the variableListName in variableAccessSpecification.

Requirements

Development environment

Target system

PLC libraries to include

TwinCAT v2.10.0 Build >= 1340

PC or CX (x86, ARM)

TcMMS.Lib