Omron NX-ECC201 User Manual page 355

NX Unit Objects
Each type of objects is assigned to the NX Units for every NX Unit number.
 PDO Mapping Objects (Input Data Mapping Objects and Output Data Mapping
Objects)
The PDO mapping objects for NX Units have four indexes assigned for every NX Unit number.
To access a PDO mapping object for an NX Unit with SDO communications, specify the index num-
ber that is assigned to the NX Unit number of the target NX Unit.
 Application Objects (Input Data Objects and Output Data Objects)
Application objects for the NX Units are assigned for every NX Unit number. Specifically, the Input
Data Objects and Output Data Objects each have 32 indexes assigned for every NX Unit number.
The application objects for NX Units are referenced by NX objects that are defined for each model
number. Definitions for NX objects start at unit number 1 (#1).
To access an application object for an NX Unit with SDO communications, specify the index number
as follows: shift the index number of the object by subtracting 1 hex from the NX Unit number of the
target NX Unit in hex, and then multiply this by 20 hex.
Example: To access Input Bit 00 (subindex number 01 hex) of the NX object (index number 6000
hex: Bit Input) on an NX-ID3317 Four-point Digital Input Unit with an NX Unit number of
2:
Shift the index number by 20 hex to get the index number 6020 hex, and specify a subin-
dex number of 01 hex.
 Configuration Objects and Information Objects
The configuration objects and information objects for NX Units each have 32 indexes assigned for
every NX Unit number.
These objects contain information that describes the Unit configuration, and are defined for each NX
Unit model number and product.
Definitions for the configuration objects and information objects start at Unit number 1 (#1).
To access configuration objects and information objects for an NX Unit with SDO communications,
specify the index number as follows: shift the index number of the object by subtracting 1 from the
NX Unit number of the target NX Unit, and then multiply this by 20 hex.
NX-series EtherCAT Coupler Unit User's Manual (W519)
(02 hex − 01 hex) × 20 hex = 20 hex
Appendices
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