Echelon Neuron - Manual (Page 124)

116 Neuron C Compiler Errors (NCC)
NCC# Description
546 The #pragma system_image_extensions nv_length_override must precede the
get_nv_length_override function's definition [NCC#546]
Use of the directive #pragma system_image_extensions nv_length_override
selects use of the user-written function get_nv_length_override() when
determining the length of a network variable. Therefore this pragma must
be used to select this method prior to the function definition, so the
compiler can properly recognize the special nature of this function
definition. See How Devices Communicate Using Network Variables in the
Neuron C Programmers Guide for more information.
547 AUTO initializers not implemented [NCC#547]
The Neuron C Compiler syntax does not permit use of initializers for
automatic variables in their declaration. (Automatic variables are
variables declared within a function scope, or a nested scope, or inside the
task body associated with a when clause.) Initialize the variables with
separate statements following the declaration of all automatic variables in
a function.
548 The property '<property-name>' cannot be shared by changeable_type NVs of
differing initial types (<NV-name-1> and <NV-name-2>) [NCC#548]
A configuration property of SCPTnvType that is shared by more than one
changeable_type network variable must be shared only by network
variables with the same initial type. The message lists two network
variables that share the property, but have differing initial types. See How
Devices Communicate Using Network Variables in the Neuron C
Programmers Guide for more information.
549 The property '<property-name>' cannot be shared by NVs with different
SCPTmaxNVLength properties (<NV-name-1> and <NV-name-2>) [NCC#549]
A configuration property of SCPTnvType type that is shared by more than
one changeable_type network variable must be shared only by network
variables that all have the same property of SCPTmaxNVLength type, if
any of those network variables use a property of SCPTmaxNVLength type.
The message lists two network variables that share the property, but have
differing SCPTmaxNVLength.
550 The property '<property-name>' cannot be shared by NVs of differing types
(<NV-name-1> and <NV-name-2>) [NCC#550]
A configuration property that inherits its type from the network variable
that it applies to may not be shared by two or more network variables of
different type. The message lists two network variables that share the
property, but have differing types. See Using Configuration Properties to
Configure Device Behavior in the Neuron C Programmer's Guide for more
information.