Eight thermocouple channels with 15-bit-plus-sign sigma-delta conversion for S7-22X control systems.
Siemens 6ES7231-7PF22-0XA0 is a SIMATIC S7-200 EM 231 analog input module for eight thermocouple channels. The module accepts thermocouple types J, K, E, N, S, T and R, plus a ±80 mV range, with 15-bit-plus-sign conversion. Siemens specifies compatibility with S7-22X CPUs, including CPU 222, CPU 224, CPU 224XP and CPU 226. The exact order code is now a spare part and Siemens lists it as PM500 discontinued, with the product lifecycle ending on October 1, 2024. Replacement work should verify sensor type, wiring, module configuration and project backup before installation.
Product condition, availability and warranty are Stockoems commercial information and are not presented as manufacturer commitments.
Accepts floating thermocouple inputs across eight channels.
Sigma-delta conversion produces digital temperature or millivolt values.
Converted values support monitoring, interlocks and control logic.
Verify the complete suffix, CPU model, thermocouple type, field wiring, channel configuration and project backup before installation. All thermocouples connected to this module must be the same type. Use shielded wiring where noise immunity is required, maintain stable ambient temperature and terminate unused channels according to the S7-200 system instructions.
Yes. Siemens lists this exact order code as PM500: Discontinued Product or end of PLM & Support, with lifecycle end on October 1, 2024.
It provides eight thermocouple input channels.
The module supports types J, K, E, N, S, T and R, plus a ±80 mV input range.
Siemens documents compatibility with S7-22X CPUs including CPU 222, CPU 224, CPU 224XP and CPU 226.
No. All thermocouples attached to the module must be the same type.
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A documented workflow supports order accuracy from model review through shipment follow-up, without promising unconfirmed delivery dates or inventory quantities.
Model and suffix verification compares the complete order code with the purchase request.
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Technical compatibility review considers the controller, sensor type, wiring and revision requirements.
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