The Modbus RTU interface, used for CT, CTlaser, and CTRatio pyrometers, is a robust and flexible communication standard for infrared temperature monitoring in industrial environments. Operating over two wires (A and B), it supports differential signaling, which enhances noise immunity and allows communication over distances up to 1200 m. Up to 32 pyrometers can be connected on a single bus, facilitating networked temperature monitoring. The Modbus RTU standard typically operates at baud rates of 9600 or 19200. Proper termination with a 120-ohm resistor at the last infrared sensor prevents signal reflections, ensuring reliable data transmission. This interface allows for precise and efficient infrared temperature data collection, essential for applications requiring digital infrared temperature readings.
The Modbus RTU interface, used for CT, CTlaser, and CTRatio pyrometers, is ideal for industrial infrared temperature monitoring. It operates over two wires (A and B) with differential signaling for noise immunity, supporting up to 32 devices over 1200 m. Typical baud rates are 9600 or 19200. Proper 120-ohm termination ensures reliable data transmission for precise infrared temperature readings.
General Specifications
Environmental rating: IP67 (Nema-4) (when installed)
Operating temperature: -20 °C to 80 °C
Relative humidity: 10 – 95 %, non-condensing
Interface Board Characteristics
Port Protocol: Modbus RTU
Transfer speed: up to 19200 bps
Connector: none
Physical layer: RS485 (2-wire), line, Master/slave system
Maximal number of devices in network: Up to 32 devices
Serial interface parameters
Baud rate: 9600 or 19200, set by user (factory default: 9600)
Data bits: 8
Parity: even
Stop bits: 1
Flow control: off
