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Appendices
NX-series EtherCAT Coupler Unit User’s Manual (W519)
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6 PDO Mapping Object
s
• The above table of receive PDO mapping objects for an NX Unit are intentionally described in a sim-
plified format.
The actual assignments for a single NX Unit are as follows:
Example: NX Unit Number 1
• The application objects that are assigned to the PDO mapping objects are defined for each NX Unit
model. Application objects are linked to NX objects.
The following table gives an example of PDO mappings for an actual NX Unit.
Example: An NX-OD3121 Four-point Output Unit or NX-OD5121 Sixteen-point Output Unit is con-
nected to NX Unit number 1.
Index (hex) Subindex (hex) Object name
1600 --- 1st receive PDO Mapping
00 Number of objects in this PDO
01 1st Output Object to be mapped
--- ---
FF 255th Output Object to be mapped
1601 --- 2nd receive PDO Mapping
00 Number of objects in this PDO
01 1st Output Object to be mapped
--- ---
FF 255th Output Object to be mapped
1602 --- 3rd receive PDO Mapping
00 Number of objects in this PDO
01 1st Output Object to be mapped
--- ---
FF 255th Output Object to be mapped
1603 --- 4th receive PDO Mapping
00 Number of objects in this PDO
01 1st Output Object to be mapped
--- ---
FF 255th Output Object to be mapped
Index (hex) Subindex (hex) Object name
Default
NX-OD3121 NX-OD5121
1600 --- 1st receive PDO Mapping --- ---
00 Number of objects in this PDO 04 hex 01 hex
01 1st Output Object to be
mapped 70000101 hex 70020110 hex
02 2nd Output Object to be
mapped 70000201 hex ---
03 3rd Output Object to be
mapped 70000301 hex ---
04 4th Output Object to be
mapped 70000401 hex ---
--- --- --- ---
FF 255th Output Object to be
mapped --- ---
1601 --- 2nd receive PDO Mapping --- ---
00 Number of objects in this PDO --- ---
01 1st Output Object to be
mapped --- ---
--- --- --- ---
FF 255th Output Object to be
mapped --- ---