Description
SM 331 (8AI) — Analog I/O
Siemens · SM 331 (8AI) · 6ES7331-7KF02-0AB0
Description
The SM 331 (8AI) is an 8-channel universal analog input module for the S7-300 PLC, supporting multiple signal types (voltage, current, resistance, thermocouple) selectable per channel group via measuring-range plugs, with 9- to 15-bit resolution depending on configuration.
Key specifications
Parameter | Value |
Function | Analog input module, 8 channels, universal |
Channels | 8 AI, configurable in groups of 4/8 |
Signal types | Voltage, current, resistance/RTD (per channel-group jumper setting) |
Resolution | 9 to 15 bits + sign, depending on measuring range |
Isolation | Galvanically isolated from backplane bus |
Mounting | S7-300 rack, standard signal-module slot |
Reference
Field | Value |
Manufacturer (OEM) | Siemens |
Model | SM 331 (8AI) |
Part number | 6ES7331-7KF02-0AB0 |
Category | Analog I/O |
System family | SIMATIC S7-300 |
GT stores quantity | 63 |
Data confidence | high |
Manuals filed (007 - Manuals)
- Specs Input Module SM331.pdf — Direct SM 331 input module specification sheet
Notes
Direct manual match; specs per Siemens SM331 8AI family datasheet.
Source: Sohar 1 DCS field-component stores inventory (Total GT_BOP). Filed in the AI HW Knowledge Base.