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7 SSI Input Units
NX-series Position Interface Units User’s Manual (W524)
7-
9 Fu
nct
ion
s
7
7-9
-8 Err
or D
at
a Detection
You can separate out error data based on the difference between the previous and current present val-
ues.
Data is treated as error data if the difference between the previous and current present values is
greater than the value set for the Position Variation Limit parameter.
Error data is discarded and the present position of the encoder is not refreshed.
The following data is also not refreshed:
• Data Refresh Status bit
• Encoder Present Position Refresh Count
• Time Stamp
Any time error data is detected with this function, the error code in the SSI Status parameter is updated.
Precautions for Correct Use
Error data detection is possible only when the coding method is set to change binary codes to
present values or change gray codes to present values. Otherwise, this function is disabled.
7-9-8
Error Data Detection
Parameter name
Setting
Default
Remarks
Position Variation
Limit
0 to 2147483647
0
• Set this parameter to 0 to disable the
function.
• Changes are applied when the power
supply to the NX Unit is turned ON or the
NX Unit is restarted.
Binary data
+
-
Conversion to
Present Value
Previous binary data
+
+
Previous present value
Encoder present position (input area)
Position
variation limit?
Y
N
Data is discarded.
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...