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1 Features and System Configuration
NX-series Position Interface Units User’s Manual (W524)
1-4 F
u
n
ction
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1
1
-4-2
Functio
ns of SSI In
put Unit
s
The following table lists the functions of the SSI Input Units.
on page 7-38 for details on these functions.
1-4-2
Functions of SSI Input Units
Function
Description
SSI data settings
Allows you to set the bit position and data length for each counter based on the
format of the SSI data.
Coding method
Allows you to select whether to convert the received SSI data for each counter.
Encoder count direction
Allows you to set the counting direction for the SSI Input Unit to 0 (Not to invert
the sign) or 1 (Invert the sign).
Bit shifting
If the number of error bits or location of the position data from the SSI encoder is
incorrect, you can shift the first bit of the received frame to correct the problem.
Parity check
Performs a parity check on the SSI data.
Data refresh status
Allows you to check for updates to the SSI data.
Error data detection
Allows you to prevent refreshing and designate SSI data as error data when the
code conversion result causes a change in position that exceeds the set value.
I/O refreshing method setting Sets Free-Run refreshing, synchronous I/O refreshing,
*1
or task period prioritized
refreshing
*1, *2
for the I/O refreshing
*3
method.
All counters use the same setting.
*1. You can select this option only when the Unit is used with a EtherCAT Coupler Unit with EtherCAT communi-
cations in DC Mode.
*2. Unit version 1.2 or later and an NX-ECC203 EtherCAT Coupler Unit are required.
*3. This is the data exchange with the Controller.
Time stamping
*4
*4. An EtherCAT Coupler Unit with unit version 1.1 or later is required.
The time when the counter value changed is retained. You can use this function
only when the I/O refreshing method is set to synchronous I/O refreshing.
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...