When you trust the heart of your system, you can operate with full confidence. Emerson controllers, part of the PD 600 system provides accurate calculations and control of your I/O modules. When mounted, communication is automatically enabled through the Light-Link interface. Power is applied to all devices on the same rail by a common power bar. Mounting, connection, replacement and addition of devices is simple. Controllers can work independently of the workstations to carry out functions.