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Appendices
A - 52 NX-series EtherCAT Coupler Unit User’s Manual (W519)
A-6 NX Objects
This section explains the NX objects that are implemented by the EtherCAT Coupler Unit.
NX objects are exclusively for EtherCAT Slave Terminals.
You can read or write these objects with special instructions that are supported by the NJ-series CPU
Unit in the Machine Automation Controller. The Read NX Unit Object (NX_ReadObj) instruction reads
NX objects, and the Write NX Unit Object (NX_WriteObj) writes NX objects. Refer to the
NJ-series
Instructions Reference Manual (Cat. No. W502-E1-07) for details on the special instruction.
Refer to the manuals for the individual NX Units for details on the NX objects that are implemented by
each NX Unit.
This manual describes NX objects with the following format.
Items within the <> brackets are replaced with data. Each item has the following meaning.
A-6-1 NX Objects
A-6-2 Format of Object Descriptions
Index
(hex)
Subindex
(hex)
Object name Default Data range Unit Data type Access
I/O alloca-
tion
Data
attribute
<Index> <Subin-
dex> <Object
name> <Default> <Data range> <Unit> <Data
type> <Access> <I/O allo-
cation> <Data
attribute>
Item Description
Index This is the index of the object that is expressed as a four-digit hexadecimal number.
Subindex This is the subindex of the object that is expressed as a two-digit hexadecimal number.
Object name This is the name of the object. For a subindex, this is the name of the subindex.
Default This is the value that is set by default.
Data range For a read-only (RO) object, this is the range of the data that you can read. For a read/write
(RW) object, this is the setting range of the data.
Unit The unit is the physical units.
Data type This is the data type of the object.
Access This data tells if the object is read-only or read/write.
RO: Read only
RW: Read/write
I/O allocation This tells whether I/O allocation is allowed.
Data attribute This is the timing when changes to writable objects are enabled.
Y: Enabled by restarting
N: Enabled at all times
---: Write-prohibited