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The Siemens 6ES7231-7PD22-0XA0 is a 4-channel thermocouple analog input expansion module from the SIMATIC S7-200 product line. It is designed exclusively for use with S7-22X CPUs and provides high-precision temperature measurement for J, K, S, T, R, E, and N type thermocouples. This module is not compatible with S7-200 SMART controllers.
Item No :
6ES7231-7PD22-0XA0Order(MOQ) :
1Payment :
EXWProduct Origin :
GermanyShipping Port :
Wuhan, Hubei, ChinaLead Time :
3-5 daysWeight :
0.126kgSpecifications
6ES7231-7PD22-0XA0 SIMATIC S7-200
| Origin | Germany |
| Net Weight (kg) | 0.126kg |
| Warranty |
1 year |
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1.How long is the delivery time?
If this item is in stock, it will take 2-3 working days to ship,
if it is not a conventional model,we will inform you of the specific delivery time.
2. Can you provide technical support?
We do not provide technical support.
But we have been working in this field for many years.
If you have any questions, please contact us and we will provide some constructive comments.
3. Can you provide warranty?
All parts we sell have one year warranty.
Q1: What is the primary function of the 6ES7231-7PD22-0XA0?
It is a 4-channel thermocouple analog input expansion module (EM 231) that converts thermocouple sensor signals into digital values for SIMATIC S7-200 controllers. It provides 15-bit + sign resolution and supports J, K, S, T, R, E, and N type thermocouples, as well as ±80 mV voltage input .
Q2: Is this module compatible with S7-200 SMART controllers?
No. The 6ES7231-7PD22-0XA0 is designed exclusively for S7-22X CPUs. It is not compatible with S7-200 SMART controllers .
Q3: What is the lifecycle status of this product?
The module was discontinued on January 10, 2022. It is classified as PM490: Start of final year of support. Siemens states the product was deleted without replacement. New projects should not select this model; existing projects requiring spare parts must source from surplus or secondary markets .
Q4: What thermocouple types does this module support?
The module supports J, K, S, T, R, E, and N type thermocouples, selectable via DIP switches. It also supports ±80 mV voltage input .
Q5: What is the resolution and update time?
The module features 15-bit + sign resolution with temperature resolution of 0.1°C/0.1°F. Update time for all channels is 405 ms .
Q6: What is the raw data format for temperature readings?
The raw analog value from the thermocouple is a multiple of 10 of the actual temperature reading. For example, a raw value of 1234 must be translated to a temperature of 123.4°C. Divide the raw value by 10.0 to obtain the temperature in degrees Celsius or Fahrenheit (units set via DIP switches) .
Q7: What is the country of origin and weight?
The module is manufactured in China with a net weight of approximately 210 g .
Q8: What should be done with unused thermocouple channels?
If a thermocouple input channel is not used, short the unused channel inputs together, or connect them in parallel to another channel. Use shielded wires for best noise immunity .
| Model | Description |
|---|---|
| 6ES7231-7PF22-0XA0 | EM 231 thermocouple input module with 8-channel TC support for higher channel count applications |
| 6ES7231-7PB22-0XA0 | EM 231 RTD input module with 2-channel RTD support for resistance temperature detectors |
| 6ES7231-7PC22-0XA0 | EM 231 RTD input module with 4-channel RTD support |
| S7-200 SMART | Modern replacement platform; consult Siemens for migration guidance from S7-200 |
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