Product Description
Key Features
- Exact module identity: Product type designation: SM 1231 RTD 4x 16 bit for SIMATIC S7-1200 G2.
- RTD input capacity: 4 analog inputs for resistance thermometers, including Pt10, Pt50, Pt100, Pt200, Pt500, Pt1000, Ni, Cu and LG-Ni1000 types.
- Supply and resolution: Rated supply: 24 V DC; permissible range: 20.4 V to 28.8 V DC. Resolution with overrange: 15 bit; + sign.
- Signal diagnostics: The module has supply-voltage monitoring, wire-break detection, alarms, a diagnostic function, and DIAG LED indication.
- Input connection limit: Shielded cable length: max. 100 m to the sensor.
Applications
- RTD temperature measurement: Measures temperature using resistance thermometers with adjustable degrees Celsius or degrees Fahrenheit.
- Input fault diagnostics: Monitors the supply voltage and detects wire breaks on the inputs.
Technical Summary
| Order number | 6ES7231-5PD50-0XB0 |
|---|---|
| Product lifecycle | Active Product |
| Product type | SM 1231 RTD 4x 16 bit |
| Analog inputs | 4; Resistance thermometer |
| Rated supply voltage | 24 V DC |
| Permissible supply voltage | 20.4 V to 28.8 V DC |
| Supported resistance thermometers | Pt10, Pt50, Pt100, Pt200, Pt500, Pt1000, Ni100, Ni120, Ni200, Ni500, Ni1000, Cu10, Cu50, Cu100, LG-Ni1000 |
| Resolution with overrange | 15 bit; + sign |
| Protection | IP20 |
Frequently Asked Questions
What order number should be confirmed for this Siemens module?
Confirm order number 6ES7231-5PD50-0XB0 and product type SM 1231 RTD 4x 16 bit.
What supply voltage does the module use?
The rated supply is 24 V DC, with a permissible range of 20.4 V to 28.8 V DC.
Which input signals does it support?
It has 4 resistance-thermometer inputs and supports Pt, Ni, Cu and LG-Ni1000 types listed in the technical data.
Does it provide input diagnostics?
Yes. It supports supply-voltage monitoring, wire-break detection, alarms, a readable diagnostics function, and DIAG LED indication.
