Omron NJ501-1400 User Manual page 186

5 Troubleshooting
 Operation in the Function Module Where an Error Event Occurred
Function module
Major fault level
PLC Function User program execu-
Module tion stops.
---
Motion Control
Function Module
---
EtherCAT Master
Function Module
---
EtherNet/IP
Function Module
 I/O Operation for Major Fault Level Controller Errors
The following table gives the operation of the CPU Unit and the I/O devices for the following errors.
• Unsupported Unit Detected
• I/O Bus Check Error
• End Cover Missing
• Incorrect Unit/Expansion Rack Connection
• Duplicate Unit Number
• Too Many I/O Points
• I/O Setting Check Error
Unit
EtherCAT Slave Terminal
*1
EtherCAT slave
Servo Drive or NX Unit assigned to
an axis
5-6
Event level
Partial fault level
--- Operation continues.
All axes stop. (The stop • The affected
method depends on the axis/axes group
error.) stops. (The stop
method depends on
the settings.)
• The motion control
instructions that are
related to axis opera-
tion are not executed.
EtherCAT communica- I/O refreshing for Ether-
tions stop. (The slaves CAT communications
operate according to stops or continues
the settings in the according to the fail-
slaves.) soft operation settings
in the master. (If I/O
refreshing stops, the
slaves operate accord-
ing to the settings in the
slaves.)
EtherNet/IP communi- Part of EtherNet/IP
cations stop. (A soft- communications stop.
ware connection from (A software connection
the Sysmac Studio or from the Sysmac Studio
an HMI is not possible.) or an HMI is possible if
the communications
connection is not the
cause of the error.)
CPU Unit operation
The EtherCAT Slave Terminal
moves to Safe-Operational state.
The slave is placed in the Safe-
Operational state.
Updating the command values is
stopped.
NJ-series CPU Unit Hardware User's Manual (W500)
Minor fault level Observation
• Axis operation con-
tinues.
• The motion control
instructions that are
not related to axis
operation are not
executed.
I/O refreshing for Ether-
CAT communications
continues.
EtherNet/IP communi-
cations continue.
Unit or slave operation
Depends on the NX Unit settings.
Depends on the slave settings.
All axes stop immediately.
*2