Siemens 6ES7331-7PF01-0AB0 SIMATIC S7-300 SM 331 8-Channel RTD Input Module
6ES7331-7PF01-0AB0
SIMATIC S7-300 SM 331 8-Channel RTD Input Module · Eight-channel isolated resistance and RTD input module with 16-bit reported and 24-bit internal resolution.
Lifecycle note: Use the unit nameplate and current official documentation as final references before approving a replacement.
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+86 15359408275SIMATIC S7-300 SM 331 8-Channel RTD Input Module · Siemens SIMATIC S7-300 SM 331
Siemens 6ES7331-7PF01-0AB0 is an isolated SIMATIC S7-300 SM 331 analog input module for eight resistance or RTD measurement channels.
The module supports 2-, 3- and 4-wire sensors including Pt, Ni and Cu10 ranges, with 16-bit reported resolution, 24-bit internal processing and a 50 ms conversion time.
Before replacement, verify the sensor type and wiring for every channel, measuring range, lead compensation, diagnostics, grounding, 40-pole front connector, process calibration and STEP 7 hardware parameters.
| Manufacturer | Siemens |
|---|---|
| Order number | 6ES7331-7PF01-0AB0 |
| Module | SM 331 analog input |
| Input channels | 8 |
| Isolation | Isolated |
| Sensor wiring | 2-, 3- or 4-wire |
| Sensor types | Resistance and RTD |
| RTDs | Pt100/200/1000 and Ni100/120/200/500/1000 |
| Additional range | Cu10 |
| Resolution | 16 bit, 24 bit internal |
| Conversion time | 50 ms |
| Front connector | 1 x 40-pole |
Siemens 6ES7331-7PF01-0AB0 measures eight resistance or RTD inputs from supported Pt, Ni and Cu10 sensors in a configured S7-300 station.
Siemens 6ES7331-7PF01-0AB0 supports 2-wire, 3-wire and 4-wire resistance connections, and each channel configuration must match the installed sensor wiring.
Siemens 6ES7331-7PF01-0AB0 reports 16-bit values using 24-bit internal processing and has a documented 50 ms conversion time.
A general voltage-input SM 331 cannot directly replace Siemens 6ES7331-7PF01-0AB0 because the supported sensors, terminal wiring, measuring ranges and hardware parameters differ.
Record each channel's RTD type, wiring method, range, diagnostics, scaling, compensation and front-connector terminal assignment before replacing Siemens 6ES7331-7PF01-0AB0.
Commission Siemens 6ES7331-7PF01-0AB0 with known resistance or temperature references and verify channel values, diagnostics, open-circuit behavior and engineering-unit scaling.
Provide the full Siemens 6ES7331-7PF01-0AB0 order number, hardware revision, sensor list, front-connector arrangement, quantity and destination.
Send the complete 6ES7331-7PF01-0AB0 catalog number, revision, quantity, destination and nameplate photo. Identification details will be checked before quotation.
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