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6 Troubleshooting
NX-series NX1P2 CPU Unit Hardware User’s Manual (W578)
6-1 Operation after an Error
6
6-1-3 Non-fatal Errors in the CPU Unit
Operation in the Function Module Where an Error Event Occurred
Function module
Event level
Major fault level Partial fault level Minor fault level Observation
PLC Function
Module
User program execu-
tion stops.
--- Operation continues.
NX Bus Function
Module
--- I/O refreshing for NX
bus communications
stops.
(NX Unit operation
depends on the NX
Unit settings.)
Operation continues. If
an NX Unit error
occurs, operation
depends on the Fail-
soft Operation Setting.
Operation continues.
Motion Control
Function Module
--- All axes stop. (The stop
method depends on the
error.)
• The affected
axis/axes group
stops. (The stop
method depends on
the settings.)
• The motion control
instructions that are
related to axis opera-
tion are not executed.
• Axis operation con-
tinues.
• The motion control
instructions that are
not related to axis
operation are not
executed.
EtherCAT Master
Function Module
--- EtherCAT communica-
tions stop. (The slaves
operate according to
the settings in the
slaves.)
I/O refreshing for Ether-
CAT communications
stops or continues
according to the fail-
soft operation settings
in the master. (If I/O
refreshing stops, the
slaves operate accord-
ing to the settings in the
slaves.)
I/O refreshing for Ether-
CAT communications
continues.
EtherNet/IP
Function Module
--- EtherNet/IP communi-
cations stop. (A soft-
ware connection from
the Sysmac Studio or
an HMI is not possible.)
Part of EtherNet/IP
communications stop.
(A software connection
from the Sysmac Studio
or an HMI is possible if
the communications
connection is not the
cause of the error.)
EtherNet/IP communi-
cations continue.
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