Range of product

Modicon M238 logic controller 

Product or component type

Analog input module 

Analogue input number

2 

Analogue input type

Thermocouple - 200...760 °C thermocouple J , differential 
Thermocouple - 270...1370 °C thermocouple K , differential 
Thermocouple - 270...400 °C thermocouple T , differential 

Cross talk

<= 2 LSB 

Range compatibility

Advantys OTB 
Twido 

Input level

Low level 

Analogue input resolution

12 bits 

LSB value

0.1 °C , thermocouple (thermocouple T) 
0.325 °C , thermocouple (thermocouple K) 
0.3 °C , thermocouple (thermocouple J) 

Permissible continuous overload

+/- 7.5 V , thermocouple 

Input impedance

≥ 1 MOhm (thermocouple) 

Sampling duration

≤ 200 ms 

Acquisition period

200 ms per channel + 1 controller cycle time 

Measurement error

0.2 % +/- 5 °C of full scale 25 °C 

Temperature coefficient

+/-0.006 %FS/°C 

Repeat accuracy

+/-0.5 %FS 

Non-linearity

+/- 0.2 %FS 

Total error

+/-1 %FS 

Type of cable

Shielded cable 

Insulation between channel and internal logic

Photocoupler 

Supply

External supply 

[Us] rated supply voltage

24 V DC 

Supply voltage limits

20,4...28,8 V 

Electrical connection

1 removable screw terminal block 

Current consumption

30 mA 24 V DC (external) 
60 mA 5 V DC (internal) 

Product weight

0,085 kg 

Dielectric strength

500 V between the I/O and the external supply circuit 
2500 V between the I/O and internal logic 

RoHS EUR conformity date

0804 

RoHS EUR status

Compliant