Product Description
Key Features
- Product identity: SIMATIC S7-1200 SB 1231 analog input with product type designation SB 1231, AI 1×12 bit.
- Analog input capacity: Has 1 current or voltage differential input and 0 analog outputs.
- Input ranges: Supports ±10 V, ±5 V, ±2.5 V, and 0 to 20 mA input ranges.
- Supply and bus current: Rated supply voltage is 24 V DC; backplane bus input current is 55 mA typically at 5 V DC.
- Conversion and suppression: Maximum cycle time for all channels is 156.25 μs with 400 Hz suppression; integration time and measured-value smoothing are parameterizable.
- Diagnostics and connection: Has diagnostic functions, diagnostic alarms, input-status and maintenance LEDs, and supports shielded twisted-pair cable up to 100 m.
Technical Summary
| Product type | SB 1231, AI 1×12 bit |
|---|---|
| Analog inputs | 1; Current or voltage differential inputs |
| Rated supply voltage | 24 V DC |
| Input ranges | ±10 V, ±5 V, ±2.5 V, and 0 to 20 mA |
| Input resistance | ≥9 MOhm for voltage ranges; ≥ 250 Ohm for 0 to 20 mA |
| Cycle time | 156.25 μs maximum (all channels); 400 Hz suppression |
| Resolution | 11 bit with overrange, + sign |
Frequently Asked Questions
What is the exact order number and product type?
The order number is 6ES7231-4HA30-0XB0, and the product type designation is SB 1231, AI 1×12 bit.
Which analog input ranges does this module support?
It supports ±10 V, ±5 V, ±2.5 V, and 0 to 20 mA input ranges. Thermocouple, resistance thermometer, and resistance inputs are not supported.
What supply voltage does the module use?
The rated supply voltage is 24 V DC.
What cable connection length is supported?
The maximum cable length is 100 m for shielded, twisted-pair cable.
