Publication 1756-UM001G-EN-P - January 2007
90 Develop Motion Applications
Make the Controller the
CST Master
You must make one module in the chassis the master clock for motion
control. This module is called the coordinated system time (CST)
master. Motion modules set their clocks to the master.
In most cases, make the controller the CST master.
To make the controller the CST master, perform this procedure.
1. In RSLogix 5000 programming software, right-click the controller
and select Properties.
The Controller Properties dialog appears.
2. Click the Date/Time tab.
3. Select the Make this controller the Coordinated System Time
master check box.
4. Click OK.
Multiple Controllers in the Chassis
If you have more than one controller in the chassis, designate one
controller as the CST master. You cannot have more than one CST
master for the chassis.
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