Product Overview
Technical Summary
| Product designation | SM 1231, AI 8x 14 bit |
|---|---|
| Analog inputs | 8; Current or voltage differential inputs |
| Voltage input ranges | ±10 V, ±5 V, ±2.5 V |
| Current input ranges | 0 to 20 mA, 4 mA to 20 mA |
| Rated supply voltage | 24 V DC |
| Permissible supply voltage | 20.4 V to 28.8 V DC |
| Cycle time | 1.25 ms; all channels active, at 400 Hz rejection |
| Resolution | 13 bit; + sign |
| Protection | IP20 |
Key Features
- Product designation: SM 1231, AI 8x 14 bit.
- Analog input capacity: 8 current or voltage differential inputs.
- Supported input ranges: Voltage: ±10 V, ±5 V, ±2.5 V; current: 0 to 20 mA and 4 mA to 20 mA.
- Rated supply voltage: 24 V DC, permissible range 20.4 V to 28.8 V.
- Conversion and resolution: Cycle time: 1.25 ms for all channels at 400 Hz rejection; resolution with overrange: 13 bit, + sign.
- Protection and diagnostics: IP20 protection, diagnostics function, diagnostic alarm, supply-voltage monitoring, wire-break detection and DIAG LED.
Frequently Asked Questions
What product does 6ES7231-4HF50-0XB0 identify?
It identifies the SIMATIC S7-1200 G2 SM 1231 analog input module, designated SM 1231, AI 8x 14 bit.
Which signal ranges distinguish this module variant?
It supports ±10 V, ±5 V, ±2.5 V, 0 to 20 mA and 4 mA to 20 mA inputs. Thermocouple, resistance thermometer and resistance inputs are not included.
What supply and input capacity should be checked?
The rated supply is 24 V DC, with a permissible range of 20.4 V to 28.8 V DC. The module has 8 current or voltage differential inputs.
What details are needed for a quotation?
Confirm the complete code 6ES7231-4HF50-0XB0, required quantity and destination.
