Omron NJ101-10 Series, User Manual

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Packet Monitoring Specifications
Item Specification
Maximum data size of one packet data file 12 MB
Maximum number of packets that can be obtained 3,904 packets
Format of packet data file TCPDump format (cap)
Time information Recorded (unit: μs)
The elapsed time starting when packet monitoring be-
gins is recorded. (Packet monitoring can be started
when power turns ON, for an EtherCAT instruction, or
for a Sysmac Studio operation.)
Save location for packet data file CPU Unit's system: 1 file
SD Memory Card inserted in CPU Unit: Multiple files
(up to capacity of SD Memory Card)
Sample Programming
This sample transfers EtherCAT communications packets to an SD Memory Card when an EtherCAT
slave error occurs. The file name is 'PacketFile.'
The processing procedure is as follows:
1
The system-defined variable _EC_ErrSta (EtherCAT Error) is monitored and processing is
started if an error occurs.
2
The EC_StopMon instruction is used to stop execution of packet monitoring for EtherCAT com-
munications.
3
The EC_SaveMon instruction is used to save EtherCAT communications packet data to a file in
the system of the CPU Unit.
4
The EC_CopyMon instruction is used to copy that file to the SD Memory Card.
5
The EC_StartMon instruction is used to restart execution of packet monitoring for EtherCAT
communications.

LD
Internal
Variables Variable Data type Initial value Comment
OperatingEnd BOOL False Processing completed
Operating BOOL False Execution condition
A BOOL False
B BOOL False
C BOOL False
RS_instance RS
EC_StopMon_instance EC_StopMon
EC_SaveMon_instance EC_SaveMon
EC_CopyMon_instance EC_CopyMon
EC_StartMon_instance EC_StartMon
Appendices
A-10
NJ/NX-series CPU Unit Built-in EtherCAT Port User's Manual (W505)