Rockwell Automation 1756-HIST2G Historian ME 2.1 - Manual (Page 137)

8 • A DMINISTERING THE M ODULE
127
It is critical that you controller’s time is set, configured, and synchronized
properly. If your FactoryTalk Historian ME application uses the high speed scan
type (collecting data between 10ms and 500ms), the controller generates the
timestamp.

NTP Server
Select the NTP Server radio button, and enter the IP address or host name of the
NTP server. NTP servers are typically maintained by a corporate IT department
and are often the Windows Active Directory server on the network.

Historian SE (which must be configured as an NTP server)
Select the Historian SE radio button to synchronize the FactoryTalk Historian ME
time with a FactoryTalk Historian SE server’s time. Before selecting this option,
you must:

Configure a FactoryTalk Historian SE server as a valid NTP server. Contact
your local system administrator to ensure that this NTP server is configured
and maintained properly.
and

Specify the FactoryTalk Historian SE server in Data Transfer.
When shutting down a FactoryTalk Historian SE server that has been configured
as an NTP server, the server may take some time to shut down. Before restarting
the FactoryTalk Historian SE server, make sure that the w32time service is
running on the FactoryTalk Historian SE server machine. This service must be
running for the time to synchronize properly. If the w32time service is not
running, start the service, and then start the FactoryTalk Historian SE server.

Manual Set
Select the Manual Set radio button to manually set the time of the FactoryTalk
Historian ME. The time is kept by the module’s real-time clock.
The RSLogix 5000 installation CD contains a Logix5000 Clock Update tool. The tool
lets you view and synchronize the system time of the controllers and devices on a
network, using any PC running Microsoft Windows and RSLinx Classic. For more
information about using this tool, see the Logix5000 Clock Update tool online help.
See the “Connecting to FactoryTalk Historian SE” section in the “Transferring Data”
chapter.