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A-3 List of NX Objects
This section describes the NX objects of the Analog Input Units and Analog Output Units.
The method to access NX objects through instructions or other messages depends on where the NX
Unit is connected.
If the NX Unit is connected to a CPU Unit, access is possible with the Read NX Unit Object instruction
and the Write NX Unit Object instruction.
When the NX Unit is connected to a Communications Coupler Unit, the method depends on the con-
nected communications master and Communications Coupler Unit.
Refer to the user's manual for the connected Communications Coupler Unit for method to use mes-
sages to access NX objects on Slave Terminals.
A-3-1
Format of Object Descriptions
In this manual, NX objects are described with the following format.
Index
Subindex
(hex)
(hex)
Index (Hex)
Subindex (Hex)
Object name
Default value
Data range
Unit
Data type
Access
I/O allocation
Data attribute
NX-series Analog I/O Units User's Manual for Analog Input Units and Analog Output Units (W522)
Default
Object name
value
: This is the index of the NX object that is expressed as a four-digit hexadecimal
number.
: This is the subindex of the NX object that is expressed as a two-digit hexadeci-
mal number.
: This is the name of the object. For a subindex, this is the name of the subindex.
: This is the value that is set by default.
: For a read-only (RO) NX object, this is the range of the data you can read. For a
read-write (RW) NX object, this is the setting range of the data.
: The unit is the physical units.
: This is the data type of the object.
: This data tells if the object is read-only or read/write.
RO: Read only
RW: Read/write
: This tells whether I/O allocation is allowed.
: This is the timing when changes to writable NX objects are enabled.
Y: Enabled by restarting
N: Enabled at all times
---: Write-prohibited
Data
Data range
Unit
type
Appendices
A
I/O
Data
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