Siemens 6ES7231-7PD22-0XA8 is a spare-part analog input module from the EM 231 family, designed exclusively for the S7-200 CN CPU (S7-22X series). It gives you four analog inputs that handle ±80 mV signals and thermocouple types J, K, S, T, R, E, N, with a resolution of 16 bit (0.1 °C / 0.1 °F). Power loss is 1.8 W typical, and the module runs on voltage measurement only — no current or resistance inputs. Physical footprint: 62 mm deep, 71.2 mm wide, 80 mm tall. Current-production spare part, CE approval only. Mates only with the S7-200 CN CPU family.
Siemens 6ES7231-7PD22-0XA8 Analog Input Module, 4 AI Thermoc
MPN6ES7231-7PD22-0XA8
Siemens S7-200 CN EM 231 analog input module, 6ES7231-7PD22-0XA8, 4 AI, ±80 mV and thermocouple types J,K,S,T,R,E,N, 16-bit resolution, 1.8 W, 62x71.2x80 mm.
$156.00 – $372.05Ref. price · indicative, final on quote
StockContact for availability
MOQ1 pcs
Sourced new & surplus through independent channelsListing updated Jun 2026
Specifications
Inputs & Signal Ranges
| Parameter | Value |
|---|---|
| Number of analog inputs | 4 |
| Current input range | No |
| Voltage input range | Yes |
| Resistance measuring ranges | No |
| RTD support (resistance thermometer) | No |
| Thermocouple support (types) | Yes |
Measurement Performance
| Parameter | Value |
|---|---|
| Resolution (bit incl. sign), max. | 16 bit; Temperature 0.1 °C / 0.1 °F |
Power
| Parameter | Value |
|---|---|
| Power loss, typ. | 1.8 W |
Mechanical
| Parameter | Value |
|---|---|
| Width | 71.2 mm |
| Height | 80 mm |
| Depth | 62 mm |
Product details
Frequently asked questions
What compliance documentation does the 6ES7231-7PD22-0XA8 carry?
The listing states it only has CE approval. No RoHS, UL, or other certifications are documented on this spare part.
MPN
6ES7231-7PD22-0XA8