Other options include a secondary 4-20 mA input to remotely control the set point, and RS-485 for Modbus communication.Ī mini-USB port may be used for a direct PC connection to run the SuperNova software for monitoring, programming, and data logging. A secondary relay control output is standard, which allow for one or two direction SV control (i.e., heating and cooling).Īdditional outputs may include two SPST alarm relays and a 4-20 mA retransmit output. Main control outputs can be 4-20 mA (SCR), voltage pulse (SSR), or relay outputs. #NOVA PRECISION DIGITAL MODBUS SERVER COMMUNICATION HOW TO#Indicators for units (˚C, ˚F,%, or none)Īuto and manual control modes can be easily changed by holding two buttons, and this is indicated on the front panel to make it easy for operators to know how to use this feature. This modern line of controllers shows the process variable (PV), set value (SV), and manipulated value (output level%, MV) on a striking reverse polarity LCD screen. The MODBUS messaging service provides a Client/Server communication between devices connected on an Ethernet TCP/IP network. An implementation guideline that proposes the object model of an MODBUS implementation example. Voltage, current (with external resistor), and direct temperature thermocouple and RTD inputs make it an excellent choice for any control application requiring easy to change, visible set points. A functional description of a MODBUS client, server and gateway implementation. Available in popular 1/4, 1/8, and 1/16 DIN sizes, and with a shallow depth behind panel of only 2.5" (63 mm) it is easy to fit into almost any panel, product, or enclosure. The SuperNova PD500 Series of PID Process & Temperature Controllers is a complete line of PID and on/off controllers.
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