Description
SM 331 (8xTC) — Analog I/O
Siemens · SM 331 (8xTC) · 6ES7331-7PF10-0AB0
Description
The SM 331 (8xTC) is an 8-channel analog input module for the S7-300 PLC optimized for thermocouple (TC) temperature measurement, with cold-junction compensation options, and can also accept RTD/Pt100-type inputs depending on configuration, per the module's variant naming.
Key specifications
Parameter | Value |
Function | Analog input module for thermocouples, 8 channels, S7-300 |
Channels | 8 AI, thermocouple-optimized |
Cold-junction compensation | Internal or external CJC supported per SM331 TC variant |
Resolution | Up to 15 bits + sign for TC ranges (per SM331 family) |
Isolation | Galvanically isolated from backplane bus |
Mounting | S7-300 rack, standard signal-module slot |
Reference
Field | Value |
Manufacturer (OEM) | Siemens |
Model | SM 331 (8xTC) |
Part number | 6ES7331-7PF10-0AB0 |
Category | Analog I/O |
System family | SIMATIC S7-300 |
GT stores quantity | 21 |
Data confidence | high |
Manuals filed (007 - Manuals)
- Specs Input Module SM331.pdf — Direct SM 331 input module specification sheet covering thermocouple variants
Notes
Inventory desc "8xTC/1xPT100" is consistent with the SM331 thermocouple-input variant family; direct manual match available in Drive.
Source: Sohar 1 DCS field-component stores inventory (Total GT_BOP). Filed in the AI HW Knowledge Base.