Introduction

You can configure the CPU as an NTP server. In this case, the CPU uses its internal clock and acts as an Ethernet NTP server for devices that are connected to the same Ethernet network.

Configure the CPU as an NTP Server

Access and set the NTP parameters in Control Expert:

Step

Action

1

Open a Control Expert project.

2

Expand these items in the Project Browser: Project > Configuration

3

Double-click PLC bus to see the modules and racks in your project.

5

Select the NTP tab.

6

From the NTP pull-down menu, select NTP Server.

7

Configure the parameters in the NTP Server Configuration area.

When the CPU is configured as an NTP server, the polling period is a parameter used by remote modules in the PAC. It represents the time elapsed before the remote modules resynchronize their internal clocks with the time from the CPU NTP server.