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5 I/O Refreshing Methods
NX-series Position Interface Units User’s Manual (W524)
5-1 I/O Ref
reshin
g fo
r Slave T
ermina
ls
5
The operation of I/O refreshing is as follows when the built-in EtherCAT port on the NJ-series CPU Unit
is used for communications with an EtherCAT Slave Terminal.
• The (b) process data communications cycle and (c) refresh cycle of the NX bus in the above figure
are automatically synchronized with the (a) task period of the primary periodic task in the CPU Unit if
the distributed clock is enabled in the EtherCAT Coupler Unit.
• The (d) refresh cycles of the NX Units depend on the I/O refreshing methods, which are described
later.
Refer to the
NX-series EtherCAT Coupler Unit User’s Manual
(Cat. No. W519-E1-05 or later) for
detailed information on I/O refreshing between the built-in EtherCAT port on an NJ/NX-series CPU Unit
and EtherCAT Slave Terminals.
Additional Information
• You can use the priority-5 periodic task only on NX-series CPU Units.
• With an NX-series CPU Unit, you can perform process data communications in two tasks: the
primary periodic task and the priority-5 periodic task.
• With an NJ-series CPU Unit, you can perform process data communications only in the pri-
mary periodic task.
NJ-series CPU Units and I/O Refresh Operation
Summary of Contents for NX-EC0112
Page 13: ...11 Manual Structure NX series Position Interface Units User s Manual W524...
Page 34: ...Revision History 32 NX series Position Interface Units User s Manual W524...
Page 36: ...Sections in this Manual 34 NX series Position Interface Units User s Manual W524...
Page 78: ...3 Part Names and Functions 3 8 NX series Position Interface Units User s Manual W524...
Page 108: ...4 Installation and Wiring 4 30 NX series Position Interface Units User s Manual W524 Unit...
Page 114: ...4 Installation and Wiring 4 36 NX series Position Interface Units User s Manual W524...
Page 126: ...5 I O Refreshing Methods 5 12 NX series Position Interface Units User s Manual W524...
Page 340: ...8 Pulse Output Units 8 76 NX series Position Interface Units User s Manual W524...
Page 462: ...Appendices A 74 NX series Position Interface Units User s Manual W524...
Page 463: ...I 1 I NX series Position Interface Units User s Manual W524 Index...
Page 466: ...I 4 NX series Position Interface Units User s Manual W524 Index...