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7 SSI Input Units
7 - 32
NX-series Position Interface Units User’s Manual (W524)
Additional Information
• The error status in the SSI Status parameter and the SSI Communications Error Code
parameter are both set to 0 when the data is received without an error.
• When you use the SSI Input Unit in combination with an NJ/NX-series Controller, notification
of SSI communications errors is provided in the SSI Communications Error Code in the SSI
Status of the SSI Input Unit. Also, the Controller detects an error event and manages it. Error
events for which notification is provided in the Controller are not automatically reset even
when the SSI Input Unit normally receives data. Reset the error event with an error reset
method of the Controller.
The bit configuration of the SSI Communications Error Code parameter is given in the following table.
n: Channel number
Additional Information
• The error status in the SSI Status parameter and the SSI Communications Error Code
parameter are both set to 0 when the data is received without an error.
• When you use the SSI Input Unit in combination with an NJ/NX-series Controller, notification
of SSI communications errors is provided in the SSI Communications Error Code in the SSI
Status of the SSI Input Unit. Also, the Controller detects an error event and manages it. Error
events for which notification is provided in the Controller are not automatically reset even
when the SSI Input Unit normally receives data. Reset the error event with an error reset
method of the Controller.
SSI Communications Error Code
Byte
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0
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ERROR CODEn
Abbr.
Data
Description
ERROR
CODEn
SSI Communications Error Code This contains the detailed error code for ERRn.
0: No error
1: Communications Preparation Incomplete
2: Frame Error
3: Parity Error
4: Communications Timeout
5: Out of range for position difference
Error description
Detection details
Assumed cause
Possible correction
Communications
Preparation
Incomplete
This error occurs when
an SSI data input is not
at high level before the
SSI clock signal is sent.
• I/O power is not being supplied.
• The SSI data input (D+ and D-) is
connected with reversed polarity.
• There is an encoder or Unit mal-
function.
• Check the I/O power supply.
• Check the SSI data input wiring.
• Replace the encoder or Unit.
Содержание NX-EC0112
Страница 13: ...11 Manual Structure NX series Position Interface Units User s Manual W524...
Страница 34: ...Revision History 32 NX series Position Interface Units User s Manual W524...
Страница 36: ...Sections in this Manual 34 NX series Position Interface Units User s Manual W524...
Страница 70: ...2 Specifications and Application Procedures 2 14 NX series Position Interface Units User s Manual W524...
Страница 78: ...3 Part Names and Functions 3 8 NX series Position Interface Units User s Manual W524...
Страница 108: ...4 Installation and Wiring 4 30 NX series Position Interface Units User s Manual W524 Unit...
Страница 114: ...4 Installation and Wiring 4 36 NX series Position Interface Units User s Manual W524...
Страница 126: ...5 I O Refreshing Methods 5 12 NX series Position Interface Units User s Manual W524...
Страница 340: ...8 Pulse Output Units 8 76 NX series Position Interface Units User s Manual W524...
Страница 462: ...Appendices A 74 NX series Position Interface Units User s Manual W524...
Страница 463: ...I 1 I NX series Position Interface Units User s Manual W524 Index...
Страница 466: ...I 4 NX series Position Interface Units User s Manual W524 Index...