Signal Conditioners, Temperature Transmitters and Controllers
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  • DAT6021.

    • 4 Channel Thermocouple to Digital PLC.
    • - 50 to 50mV to Digital converter.
    • - 100 to 100mV to Digital converter.
    • - 0.5 0 to 0.5 Volts input to Digital converter.
    • - 1 to 1 V to Digital converter.
    • DIP Switch Configurable.
    • Output 16 Bit.
    • DIN Rail Mounted.

Thermocouple to Digital PLC Input Module, DAT6021 4 Channel

General Description

The DATEXEL DAT6021 converts mV signals up to 1000mV and J,K,S,R,B,E,T,N type Thermocouples into a digital signal that can be read by a digital PLC.
The DATEXEL DAT6000 series amplifies, linearizes, Isolator, filters and converts the analog signals to a high resolution digital signal, by few and simple instructions downloaded into any PLC. It is possible to acquire more analog signals on one digital input.
The digital signal from the DAT6021 can be connected to any input of the PLC. The digital signal is composed of a series of 16 bits “word” containing the value of the analog inputs to acquire. The PLC controls the data transmission by a clock signal (CLK) generated from one of its output ports used to ask the device after the enabling of transmission by the enable signal (ENABLE). If the enable signal is high, at each rising edge of clock, the device will provide on the data line (DATA) one of the bits that composes the reading word.
Every cycle of reading is composed of 1 synchronism bit and 16 bits for each analog signal; this means that every reading is composed of 33 bits.
The rising edge of the ENABLE signal, managed from the controller, resets the cycle of reading and allows to avoid the reading of the unused input channels; the ENABLE signal can be used also to multiplex more devices to the same PLC's digital input.
The 2000 Vac isolation between inputs, power supply and data lines eliminates the effects of all ground loops eventually existing and allows the use of the converter in heavy environmental conditions found in industrial applications. The DAT6023-V is in compliance with the standard 89/336/CEE on the Electromagnetic Compatibility.
The DATEXEL DAT6000 series is housed in a plastic enclosure of 12.5mm thickness suitable for DIN rail mounting in compliance with EN-50022 and EN-50035 standards.

4 X Thermocouples, mV.
16 Bit.
Power Supply Voltage 20-30Vdc
Reverse polarity protection 60Vdc
30 mA
DIP Switch Configurable.
Between Input/Output/Power Supply 1500Vac.
For Industrial environments
Immunity EN 61000-6-2
Emission EN 6100-6-4
Material self-extinguishing
Dimensions W x H x T
3 1/2" x 4 1/2 " x 1/2"
90 x 112x x 12.5 mm
Weight 3 oz 90 g
Operating Temperature -4°F +140°F -20°C +60°C
Storage Temperature -40°F +185°F-40°C +85°C
Humidity (non condensing) 0-90%



Input: Thermocouple Type J, K, S, R, B, E, T, N and mV.
Output: 16 Bit.
Power Supply: 18 to 30 Vdc. Reverse polarity protection 60 Vdc.
Current Consumption: Current output 35 mA max. Voltage output 25 mA max.
Temperature rating: Operative- 4°F +158°F - 20°C +70°C
  Temperature Storage Temperature - 40°F +185°F - 40°C +85°C.
Humidity: (non condensing) 0-90%.
Housing: Material Self-extinguishing.
Dimensions: 3 1/2" x 4 1/2 " x 1/2", 90 x 112x x 12.5 mm.
Weight: 3 oz 90 g.
EMC. For industrial environments.
  Immunity: EN 61000-6-2.
  Emission: EN 61000-6-4.
Configuration: PC Configurable and DIP Switch Configurable


Channel 0  
mV and Thermocouple Positive I Negative H
Channel 1  
mV and Thermocouple Positive L Negative H
Channel 2  
mV and Thermocouple Positive E Negative G
Channel 3  
mV and Thermocouple Positive F Negative G
PLC Connection  
Enable Terminal N
Data Terminal P
Clock Terminal M
GND Terminal O
Output and Power supply Positive R Negative Q

DAT6021 wiring Diagram.


  • 4 Channel Thermocouple to digital PLC.
  • 4 Channel 16 Bit Thermocouple converter.
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