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Yokogawa Electric Corporation





Lesson 8: UTAdvanced Digital Indicating Controllers One Point Lessons

Controllers with CC-Link Communication Support

UTAdvanced digital indicating controllers can be equipped for open network CC-Link communications. Wiring is easy thanks to a removable connector on the controller's rear panel.

Rear panel
Fig. 1   Rear Panel

In addition to acquisition of controller operation data (measured values, settings, control output values etc.), parameters required for controller settings (P, I, D, and alarm settings values, etc.) can be set or confirmed via CC-Link communications.

UTAdvanced digital indicating controllers come with dedicated digital profile information, thus requiring ladder programs to be created on the PLC side. By simply entering settings on the CC-Link communication key station unit, data can be acquired automatically on the PLC registers. And when you want to set values on the controller side, you can do so automatically by writing them to the PLC registers.

There are two types of dedicated profile: fixed profiles with predetermined numbers of connected units and setting parameters; and user profiles that can be manually prepared.

Screen image of the profile creation tool

Screen image of the profile creation tool
Fig. 2   Profile creation tool

Example of the profile

Example of the profile
Fig. 3   Example of the profile for UT55A/UT35A

The UTAdvanced with CC-Link communications also comes standard with RS485 communications (Modbus master). In other words, a single controller with CC-Link communications can connect with multiple RS-485 communication–enabled controllers as Modbus slaves. This function also enables access to controllers that support RS-485 communication via CC-Link communication.

See attached connection diagram

Fig. 4   Connection diagram

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