7 SSI Input Units
7 - 54
NX-series Position Interface Units User’s Manual (W524)
The following timing charts show the timing for both Free-Run refreshing and synchronous I/O refresh-
ing.
Free-Run Refreshing
*1. Bit changes are not always detected depending on the I/O refresh cycle and timing when you use Free-Run
refreshing.
*2. You can compare the values of the Encoder Present Position Refresh Count parameter to check if the data
has been refreshed when you use Free-Run refreshing.
Synchronous I/O Refreshing
Timing Charts
Data communications
SSI data communications
Data refresh bit
(in SSI Unit)
Communications
completed.
Free-Run refreshing performed.
Free-Run refreshing performed.
Encoder present
position refresh
counter (in SSI Unit)
Time
Time
Data refresh bit
(host Controller)
Encoder present
position refresh
counter (host
Controller)
(*1)
(*2)
(*2)
Data communications
SSI data communications
Data refresh bit
(in SSI Unit)
Communications
completed.
Synchronous refresh timing
Synchronous refresh timing
Synchronous refresh timing
Encoder present
position refresh
counter (in SSI Unit)
Time
Time
Data refresh bit
(host Controller)
Encoder present
position refresh
counter (host
Controller)
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...