6-11
6 Maintenance and Troubleshooting
NB-series Programmable Terminals Startup Guide Manual(V109)
6-3 Troubleshooting
6
6-3-1 Software Trouble
11
How to keep the time in the event record and in the PLC synchronized
Check [Use The External Clock for Event] in [HMI Attribute]
__
[HMI Extended Attributes], as
follows:
Meanwhile, clock register data inside the PLC is also needed to be transmitted to the local
register LW9010-9017. For details, refer to the NB-Designer User Manual [3-10-3 HMI
Extended Attributes].
12
Why cannot the history events be saved even if “saving” is selected
In most of this kind of cases, although the customer selects to save them, the No. of events to
be saved which is 0 by default is not changed to the No. the customer needs, thus the problem
occurs. In this case, just set the No. of events to be saved to make it work. This is done in [HMI
Attribute] --- [Historical Events Storage], as follows:
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