Omron NX701-17 Series User Manual page 204

9 Troubleshooting
Event name Process Data Communications Error
Meaning An error occurred in process data communications.
Source EtherCAT Master Function Module
Error attributes Level
Effects User program
Indicators EtherCAT NET RUN
---
System-defined Variable
variables
_EC_PDCommErr
_EC_CommErrTbl
_EC_PDActive
Cause and Assumed cause
correction
A slave left the network even though
the disconnection operation or dis-
able operation was not performed.
• The power supply of the slave is
turned OFF.
• The Ethernet cable is removed.
A slave left the network even though
the disconnection operation or dis-
able operation was not performed.
• A connector on the Ethernet cable
is disconnected, the contact is
faulty, or parts are faulty.
• The Ethernet cable is broken.
• The specified cable is not being
used.
Slave failure
Attached
Attached information 1: Error details
information
Precautions/ None
Remarks
* n is 512 for an NX-series CPU Unit and 192 for an NJ-series CPU Unit.
9-34
Source details
Minor fault Recovery
Continues. Operation
EtherCAT NET ERR
Flashes at 1-s intervals.
Data type
BOOL
Array[1..n] of BOOL*
BOOL
Correction
• Perform the disconnection opera-
tion or disable operation before
turning OFF the power supply of the
slave.
• Perform the disconnection opera-
tion or disable operation before
removing the Ethernet cable.
The causes given on the left are pos-
sible if the error occurs from when the
system starts operation or if it always
occurs after a specific time after the
system starts operation.
Use the diagnostic and statistical
information from the Sysmac Studio
and check the EtherCAT communica-
tions status.
If the Ethernet cable is broken or if the
specified cable was not used, replace
the cable. Or, reconnect the connec-
tor and make sure it is mated cor-
rectly.
If this error occurs again even after
the above correction, replace the
slave.
0001 hex: Slave WDT error (Slave failure)
0002 hex: Slave disconnected (A slave left the network even though the disconnection opera-
tion or disable operation was not performed.)
NJ/NX-series CPU Unit Built-in EtherCAT Port User's Manual (W505)
Event code 842C0000 hex
Slave Detection
timing
Error reset Log category
When Fail-soft Operation Is Set to Fail-soft
Master:
Operation continues.
Slave:
An error occurred. Operational state continues. If a PDI
watchdog error occurs in a slave, the slave enters the Init
state. Check for communications errors for each slave in
system-defined variables _EC_CommErrTbl [].
When Fail-soft Operation Is Set to Stop
Master:
All slaves enter the Pre-operational state.
Slave:
An error occurred. When operation stops, all slaves enter
the Pre-operational state. If a PDI watchdog error occurs
in a slave, the slave enters the Init state.
EtherCAT LINK/ACT
---
Name
Process Data Communications Error
Communications Error Slave Table
Process Data Communications Status
Prevention
Same as corrections that are given on
the left.
• Make sure that the Ethernet cable
connector is mated securely.
• Make sure that the Ethernet cable
is not broken.
• Make sure that the specified cable
is being used.
None
During communi-
cations
System