FS-8700-19_Metasys_N2 Driver Manual

Page 9 of 51

4.4.2.Driver Related Map Descriptor Parameters

4.4.2.1.N2Open Map Descriptor Parameters

 

Column Title

 

Function

 

Legal Values

 

 

 

 

 

One of the node names

 

Node_Name

Name of Node to fetch data from

 

specified in “Client Node

 

 

 

 

 

Descriptor” above

 

 

 

 

 

If the vendor device lists a

 

 

 

 

 

point as BD then use

 

 

 

 

 

Data_Type=Byte.

 

 

 

 

 

If the vendor device lists a

 

 

 

 

 

point as ADI then use

 

Data_Type

 

Data type

 

Data_Type=Integer.

 

 

 

 

 

If the vendor device lists a

 

 

 

 

 

point as ADF then use

 

 

 

 

 

Data_Type=Float_Reg.

 

 

 

 

AI, AO, DI, DO,

 

 

 

 

 

Float_Reg, Integer, Byte

 

 

 

 

 

 

Length

 

Length of Map Descriptor

1

Address

 

Starting address of read block

1-256

 

 

 

Used to specify an N2-specific

 

 

 

MN2_Function*

 

function, e.g. COS. See

 

COS, Override, Release

 

 

 

description below.

 

 

 

 

 

Used to specify the attribute if an

 

 

 

MN2_Attribute*

 

attribute other than Current Value

 

See

 

 

is to be accessed. See attribute

 

N2Open Attribute Table

 

 

 

 

 

 

 

table below

 

 

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FieldServer FS-8700-19 instruction manual AI, AO, DI, do