The UTAdvanced Hybrid Temperature Controller (photo) combines PID control with an embedded ladder-sequence control. The new feature supports 84 ladder commands, four analog inputs, three analog outputs and allows up to 400 ladder steps that can be programmed and run together with the PID control. The PLC capability allows the use of a temperature controller along with a mini PLC to obtain the same control functionality in one package at the cost of just the temperature controller. The UTAdvanced includes a high-intensity LCD display and a simple user interface. Communication platforms include Ethernet, Profibus DP and RS485. These platforms support Modbus/TCP, Modbus RTU, peer-to-peer, master/slave and a proprietary protocol. — Yokogawa Corp. of America, Newnan, Ga.
Temperature controller with embedded PLC ladder-logic control
| By Chemical Engineering