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From eurotherm.com
Example: You have a press with top and bottom heated platens, each with its own temperature controller (see Fig 1). You want to be able to set the temperature on one controller, say the top, (call it the master) and have the bottom, (the slave) adopt the same setting. The slave controller takes the signal representing temperature difference, from the two thermocouples connected back-to-back. You set its set point to 0 degrees. This controller decreases its output power for upscale readings increases it for downscale readings and will not be satisfied until it achieves its set point of zero degrees. This means that the two thermocouples therefore the two platens end up at the same temperature. Products & Services
IC bus interfaces and controllers or bus masters are interfaces between most standard parallel-bus microcontrollers or microprocessors and the serial bus.
Superplastic forming equipment produces complex shapes in a high-temperature process which elongates and deforms a metal blank.
Temperature instruments use contact or noncontact methods to measure temperature. Products include dial, digital, industrial and laboratory thermometers; temperature probes, indicators, and sensors; RTD elements and transmitters; and thermistors, thermocouples, thermopiles, and thermal switches.
Calibration standards and reference sources include any source that can provide a reference for the calibration of an instrument or comparison of a material or component.
Deaerators are used to remove dissolved, corrosive gases from boiler feed water. They heat incoming makeup water for injection into the boiler, and return the condensate to a temperature which minimizes the solubility of these gases.
Product Announcements
Topics of Interest
Any two Operator Control Stations (OCS) units in combination with SmartStixTM I/O can be set up to be a High Availability System. High Availability is defined as the ability of the Slave controller to...
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Any two Operator Control Stations (OCS) units in combination with SmartStixTM I/O can be set up to be a High Availability System. High Availability is defined as the ability of the Slave controller to...
(Read More)
The DeviceNet™ system is an open network standard, built on the Controller Area Network (CAN), designed to reduce the cost and time to install industrial devices while providing compatibility with...
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When using the Modbus protocol, it is common that a terminal, such as a QTERM-G70 act as the Modbus Master, and the controller or other device act as the Modbus Slave. This application note will...
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This is only recommended with power converters specifically designed for parallel connection. A general comment is that it is much lower cost and causes far fewer problems to use a single power...
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Technical Articles
Master/Slave Control: Three Ways To Achieve It
- Temperature Sensing
Managing Modbus Response Timeouts
- Industrial Computers and Embedded Computer Components
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