Switches

Temperature Switches are sensors with an electrical contact output at a specific temperature. There is a choice of Digital Panel Mount, Limit, and Mechanical for types of switches.

Digital Panel Mount Panel mount digital indicating sensors with an electrical contact output at a specific temperature. Most models contain a three digit, easy-to-read display is included on the controller. The programming of most models is performed through the front keypad. Ideal for refrigeration control. View More

Mechanical RTD and Thermocouple input sensors with an electrical contact output at a specific temperature. Dwyer's mechanical switches are lightweight, durable, and small. Applications include mechanical process temperature monitoring, coal mines, HVAC controls, petrochemical plants, and oil rigs or refineries. View More

Limit Limit Switches are sensors with an electrical limit control contact output at a specific temperature. Unit allows the user to easily select automatic or manual reset. Applications include gas fired heater limit control and burner control. View More

Questions

Question

We are trying to program a temperature control and receive the following message - Communication error > address 01: no response from controller at register 795 (031A). What could be causing this error?

Answer

The register 795 is a Modbus register. One of the reasons why there is a communication error is the -992 for the RS-485 communication is LOVELINK Protocol, if you are trying to communicate with Modbus® protocol, it will not work. See the LoveLink™III Software.

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