Range of product

Modicon M238 logic controller 

Product or component type

Analog input module 

Analogue input number

4 

Analogue input type

Current 4...20 mA , non differential 
Temperature probe - 200...600 °C Pt 100/Pt 1000 , non differential 
Temperature probe - 50...150 °C Ni 100/Ni 1000 , non differential 
Voltage 0...10 V , non differential 

Cross talk

<= 1 LSB 

Range compatibility

Advantys OTB 
Twido 

Analogue input resolution

12 bits 

LSB value

0.15 °K , temperature probe 
2.5 mV , voltage 
4.8 µA , current 

Permissible continuous overload

13 V , voltage 
40 mA , current 

Input impedance

10 kOhm (voltage) 
470 Ohm (current) 
≥ 10 kOhm (temperature probe) 

Sampling duration

≤ 160 ms 

Acquisition period

160 ms per channel + 1 controller cycle time , voltage/current 
320 ms per channel + 1 controller cycle time , temperature probe 

Measurement error

+/- 0.2 % of full scale , 0...10 V 25 °C 
+/- 0.2 % of full scale , 4...20 mA 25 °C 
+/- 0.4 % of full scale , Pt 100/Pt 1000, Ni 100/ Ni 1000 25 °C 

Temperature coefficient

+/- 0.004 %FS/°C , temperature probe 
+/- 0.009 %FS/°C , voltage 
+/- 0.009 %FS/°C , current 

Repeat accuracy

+/-0.1 %FS 

Non-linearity

+/- 0.02 %FS 

Total error

+/-0.5 %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

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

Product weight

0,085 kg