Product Description
Key Features
- Product identity: SIMATIC S7-1200 G2 SB 1231 analog input; product type designation: SB 1231, AI 4x 14 bit.
- Analog inputs: 4 current or voltage differential inputs with 14 bit ADC; supported ranges include ±10 V, ±5 V, ±2.5 V, 0 to 20 mA and 4 to 20 mA.
- Supply voltage: Rated supply: 24 V DC; permissible range: 20.4 V to 28.8 V DC.
- Input performance: Maximum cycle time for all channels: 0.625 ms at 400 Hz rejection; resolution with overrange: 13 bit including sign.
- Installation and diagnostics: Shielded cable length: maximum 100 m with shielded, twisted pair; diagnostics, diagnostic alarm, supply-voltage monitoring, wire-break detection and DIAG LED are supported.
- Lifecycle and physical data: Lifecycle: Active Product. Packaging dimensions: 82.00 x 34.00 x 79.00 mm; net weight: 0.030 kg.
Technical Summary
| Product type | SB 1231, AI 4x 14 bit |
|---|---|
| Analog inputs | 4; Current or voltage differential inputs |
| Input ranges | ±10 V, ±5 V, ±2.5 V, 0 to 20 mA, 4 to 20 mA |
| Rated supply voltage | 24 V DC |
| Permissible supply range | 20.4 V to 28.8 V DC |
| Cycle time | 0.625 ms maximum; all channels, at 400 Hz rejection |
| Resolution | 13 bit; + sign |
| Diagnostics | Diagnostics function, diagnostic alarm, supply-voltage monitoring, wire break and DIAG LED: Yes |
| Lifecycle | Active Product |
Frequently Asked Questions
What is the exact order number and product type?
The exact order number is 6ES7231-4HD50-0XB0, and the product type is SB 1231, AI 4x 14 bit.
Which input ranges does the module support?
It supports ±10 V, ±5 V, ±2.5 V, 0 to 20 mA and 4 to 20 mA. Thermocouple, resistance thermometer and resistance inputs are not supported.
What supply voltage should be confirmed?
The rated supply is 24 V DC, with a permissible range from 20.4 V to 28.8 V DC.
What cable and diagnostics details should be checked?
The maximum shielded cable length is 100 m with shielded, twisted pair. Diagnostics, diagnostic alarm, supply-voltage monitoring, wire-break detection and a DIAG LED are supported.
