Omron NX-ECC201

A - 11
Appendices
NX-series EtherCAT Coupler Unit User’s Manual (W519)
A-4 Connecting to Masters from Other Manufacturers
A
A-4-2 Supplementary Information for Connections with a Master from Another Manufacturer
 PDO Group Mapping Example
An example of PDO group mapping is provided below.
Configuration Example
Top line: NX Unit number
Middle line: Data size
Bottom line: PDO group
Mappings for Configuration Example
P
This section describes I/O refreshing.
 I/O Refreshing with a Master from Another Manufacturer That Does Not Sup-
port DC Synchronization
In this case, EtherCAT Slave Terminals can operate only in Free-Run Mode.
NX Units that support Synchronous I/O refreshing and Free-Run refreshing can operate in the
Free-Run Mode with Free-Run refreshing.
To operate an EtherCAT Slave Terminal in Free-Run Mode, set up communications in the software
from the other manufacturer so that the EtherCAT Slave Terminal operates in Free-Run Mode. NX
Units that support synchronous I/O refreshing and Free-Run refreshing are automatically set to use
Free-Run refreshing when you set up communications on the software from another manufacturer
so that the EtherCAT Slave Terminal operates in Free-Run Mode.
Offset
Bit
15
Bit
8
Bit
7
Bit
0
PDO group
+0 #0 Coupler
+1
+2 #2 Word
+3 #8
+4 #1 Bit
+5 #7 #6 #5 #4 #3
+6 Reserved. #7
I/O Refreshing
#0
(4 bytes)
Coupler
#1
(2 bytes),
Bit
#2
(2 bytes),
Word
#3
(1 bit),
Bit
#4
(2 bits),
Bit
#5
(1 byte),
Bit
#6
(4 bits),
Bit
#7
(4 bits),
Bit
#8
(2 bytes),
Word
End
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