Omron sysmac NX102-9 Series Owner's Manual page 322

8 CIP Message Communications
• Event log record
When the first response is obtained, the value of Latest index of registered record value is
retained as the record index during the previous readout.
When the second response onwards is obtained, the record index during the previous readout
and Latest index of registered record value are compared. If the value was changed, execute
from step 1 again since the event log of the Unit was added.
4
Add the Number of readout record value of the response data to the total number of readout
records.
5
If the total number of readout records does not satisfy the Number of registered record, it means
that there are records which have not been read. Specify the following parameters and execute
Get event log again.
• Start number of read record: Last index of readout record when the previous service was exe-
cuted + 1.
• Number of read record: Number of read records
Repeat steps (3) to (5) until the total number of readout records match the Number of registered record.
Clear Event Log (Service Code: 3C hex)
Clear the event log of the Controller or specified NX Unit.
The event log is immediately cleared after the service is successful. When you executed for the Con-
troller, only the event log saved in the Controller is cleared. Event logs of slaves connected to the Con-
troller such as EtherCAT slaves are not cleared.
 Request Data Format
Parameter name
Service
Request Path Size
Request Path
Unit No
Event log type
*1 The User event log is valid only when the Controller is specified for the Unit number.
8-66
Data type
USINT Clear event log service: 3C hex
USINT Size of Request Path: 02 hex
Padded EPATH Request path: 2074 2401 hex
Class ID: 74 hex
Instance ID: 01 hex
UINT Unit number
0000 hex: Controller
0001 to 0020 hex: NX Unit
0021 hex or above: Not supported
UINT Event log type
0000 hex: System event log
0001 hex: Access event log
0002 hex: User event log
0003 hex: All types of the system event log,
access event log, user event log.
NJ/NX-series CPU Unit Built-in EtherNet/IP Port User's Manual (W506)
Description
*1