Product Description
Key Features
- Product identity: SM 1231, AI 4×13 bit analog input module for SIMATIC S7-1200.
- Analog inputs: 4 current or voltage differential inputs; maximum cycle time for all channels is 625 μs.
- Input ranges: Voltage: ±10 V, ±5 V, ±2.5 V. Current: 4 to 20 mA and 0 to 20 mA.
- Supply and resolution: Rated supply voltage is 24 V DC. Resolution with overrange is 12 bit; + sign.
- Diagnostics and protection: Has alarms, diagnostics, supply-voltage monitoring, wire-break detection, input-status LED, maintenance LED, and IP20 protection.
Applications
- Voltage and current signal input: Accepts voltage or current differential input signals through the supported analog input ranges.
Technical Summary
| Order number | 6ES7231-4HD32-0XB0 |
|---|---|
| Product lifecycle | Active Product |
| Product type designation | SM 1231, AI 4×13 bit |
| Analog inputs | 4; Current or voltage differential inputs |
| Rated supply voltage | 24 V DC |
| Voltage input ranges | -10 V to +10 V; -5 V to +5 V; -2.5 V to +2.5 V |
| Current input ranges | 0 to 20 mA; 4 mA to 20 mA |
| Resolution with overrange | 12 bit; + sign |
| Cycle time, all channels, max. | 625 μs |
| Input resistance | ≥9 MOhm for voltage ranges; 280 Ω for current ranges |
| IP degree of protection | IP20 |
Frequently Asked Questions
What order number should be confirmed for this SM 1231 analog input module?
Confirm the complete order number 6ES7231-4HD32-0XB0 on the nameplate.
How many analog inputs does 6ES7231-4HD32-0XB0 have?
It has 4 current or voltage differential inputs.
Which signal ranges should be checked?
Check voltage ranges of ±10 V, ±5 V, and ±2.5 V, or current ranges of 4 to 20 mA and 0 to 20 mA.
What is excluded from this configuration?
It is without thermocouple, resistance thermometer, and resistance input ranges.
