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10 Troubleshooting
NX-series Position Interface Units User’s Manual (W524)
10-3
Checkin
g
f
o
r Errors an
d
Tr
o
u
b
lesho
o
ti
ng o
n
t
h
e Sysm
ac
10
1
0-3-2
Event C
odes for Er
ro
rs and T
roubleshooting Procedur
es
Event name
Illegal State Transition
Event code
743F0000 hex
Meaning
The EtherCAT master or EtherCAT Coupler Unit executed a command to change the communications sta-
tus when the Pulse Output Unit is in the Operation Enabled status.
Source
Depends on where the Sysmac
Studio is connected and the sys-
tem configuration.
Source details
NX Unit
Detection
timing
Continuously
Error
attributes
Level
Minor fault
Recovery
Reset error in
the NX Unit.
Log category
System
Effects
User program
Continues.
Operation
The NX Unit will continue to operate.
Input data: The operation depends on the new com-
munications status.
Output data: The external outputs are turned OFF.
The pulse output value depends on the Load Rejec-
tion Output Setting.
Sys-
tem-defined
variables
Variable
Data type
Name
None
---
---
Cause and
correction
Assumed cause
Correction
Prevention
A communications command to
change the current communica-
tions status was received from the
communications master while the
Unit is in the Operation Enabled
status.
Correct the program so that there
are no incorrect changes in the
communications status. Or, add
interlocked rungs to the program
to leave the Operation Enabled
state before you change the com-
munications status.
Write the program so that there
are no incorrect changes in the
communications status. Or, cre-
ate interlocked rungs in the pro-
gram to leave the Operation
Enabled state before you change
the communications status.
Attached
information
None
Precautions/
Remarks
None
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...