Product Overview
Technical Summary
| Analog inputs | 8 |
|---|---|
| Resolution with overrange | max. 14 bit; Unipolar: 14 bit; bipolar: 13 bit + sign |
| Basic conversion time | 52 μs per channel |
| Load voltage L+ | Rated value (DC): 24 V |
| Input ranges | Voltage: Yes; Current: Yes |
| Isochronous mode | Yes |
| Diagnostics function | Yes |
| Required front connector | 20-pin |
| Potential separation | Between the channels and backplane bus: Yes; between the channels and the power supply of the electronics: Yes |
| Product lifecycle | Product cancellation |
Key Features
Has 8 analog inputs with voltage and current input ranges; thermocouple, resistance thermometer and resistance input ranges are not supported.
Resolution with overrange is max. 14 bit; unipolar: 14 bit, bipolar: 13 bit + sign. Basic conversion time is 52 μs per channel.
Product function: Isochronous mode, Yes; the product description notes an improved bus cycle time for isochronous mode.
Has diagnostics, parameterizable diagnostic alarms, parameterizable limit value alarms on channels 0 and 2, and a red group error SF LED.
Supports current measurement as a 2-wire or 4-wire transducer and requires a 20-pin front connector.
Product cancellation. The collected product description identifies it as a spare part.
Frequently Asked Questions
What is the exact Siemens line item?
It is Siemens 6ES7331-7HF01-0AB0, a SIMATIC S7-300 analog input SM 331 spare part.
How many analog inputs does the module have?
It has 8 analog inputs.
What supply voltage does it use?
Load voltage L+ is 24 V DC rated value.
Which connector is required?
A 20-pin front connector is required.
