Omron NX701-17 Series Troubleshooting Manual page 44

1 Overview of Errors
I/O Operation for Major Fault Level Controller Errors
The following table gives the operation of the CPU Unit and the I/O devices.
Unit
NX Unit mounted to the CPU Unit
*1
Built-in I/O
*1
Option Board
NX-series Slave Terminal
*2
EtherCAT slave
Servo Drive or NX Unit assigned to
an axis
CJ-series Basic I/O Unit
CJ-series Special Unit
Devices connected with EtherNet/IP • For the originators of tag data
*1 This applies to an NX1P2 CPU Unit.
*2 Excluding Servo Drives assigned to an axis.
*3 Settings and setting methods depend on the slave. Refer to the manual for the slave. For a Servo Drive, oper-
ation depends on the setting of object 605E hex (Fault Reaction Option Code).
*4 This applies to an NJ-series CPU Unit.
*5 You can set whether to clear output or maintain the data from before the error occurred. Refer to the NJ/NX-
series CPU Unit Built-in EtherNet/IP Port User's Manual (Cat. No. W506) for details.
The following table gives the operation of the CPU Unit and the I/O devices for the following errors
that occur for an NJ-series Unit.
• 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
1-16
CPU Unit operation
*1 Input refreshing stops.
• Depends on the Load Rejection
Output Setting.
• Input refreshing stops.
• Outputs turned OFF. Output val-
ues depend on the specifications
of the Option Board.
• Input refreshing stops.
The NX-series Slave Terminal
moves to Safe-Operational state.
The slave is placed in the Safe-
Operational state.
Updating the command values is
stopped.
*4 • The values of all outputs are
cleared to zero.
• Input refreshing continues.
*4 Refreshing continues.
links, the variables and I/O mem-
ory addresses for input (con-
sume) tags are not refreshed.
• For the targets of tag data links,
operation depends on the set-
tings of the tags sets for the out-
put (produce) tags.
Unit or slave operation
Depends on the settings for the NX
Unit.
---
Analog I/O Option Board
• Output value: 0 V
Depends on the NX Unit settings.
Depends on the slave settings.
All axes stop immediately.
• All outputs are turned OFF.
• External inputs are refreshed.
Depends on the Unit operating
specifications.
Depends on the specifications of
the connected devices.
*5
NJ/NX-series Troubleshooting Manual (W503)
*3