Home > Products > SIEMENS > SIMATIC S7 Series
Product Name:Analog input
Brand Name: SIEMENS
Model Number:6ES7231-4HF32-0XB0
Country of Origin:GERMANY
Warranty: 12 Months
Whatsapp：+86 18159889985
Email：[email protected]
Brand Name: |
SIEMENS |
Model Number: |
6ES7231-4HF32-0XB0 |
Country of Origin: |
GERMANY |
Packaging Details: |
Original new Factory Sealed |
Delivery Time: |
Delivery time in stock |
Payment Terms: |
T/T |
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Sales Manager: |
Stella |
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Send an email: |
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Contact in Whatsapp: |
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Product Type Designation |
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Order Number |
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Supply Voltage (Rated) |
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Input Current (typ.) |
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Current from Backplane Bus (5 V DC, typ.) |
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Power Loss (typ.) |
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Number of Analog Inputs |
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Permissible Input Voltage (Voltage Input, destruction limit) |
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Permissible Input Current (Current Input, destruction limit) |
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Cycle Time (all channels) |
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Input Ranges (Voltage) |
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Input Ranges (Current) |
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Input Ranges (Resistance Thermometer / Thermocouple / Resistance) |
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Input Resistance (Voltage Ranges) |
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Input Resistance (Current Ranges) |
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Resolution |
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Integration Time |
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Smoothing of Measured Values |
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Basic Error Limit (Voltage / Current, at 25 °C) |
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Temperature Error (at 55 °C) |
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Diagnostics |
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Diagnostics Indication LED |
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Degree of Protection |
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Dimensions (W x H x D) |
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Weight (approx.) |
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Operating Temperature |
-20 °C to +60 °C |
The 6ES7231-4HF32-0XB0, part of the SIMATIC S7-1200 series, is a high-density analog input module. This SM 1231 module provides 8 differential analog inputs for voltage (±10 V, ±5 V, ±2.5 V) or current (0–20 mA, 4–20 mA) signals. With a resolution of 13 bits and a fast conversion time of only 625 µs per all channels, the 6ES7231-4HF32-0XB0 delivers precise and efficient data acquisition. The 6ES7231-4HF32-0XB0 easily snaps onto the DIN rail next to the CPU, making it a flexible choice for expanding the analog monitoring capabilities of any S7-1200 system. This module is built for robust industrial environments and simplifies connection of various sensors directly.
Process Monitoring: Precise measurement of flow, pressure, level, and temperature sensors.
Factory Automation: Monitoring of machine conditions and feedback from analog actuators.
Energy Management: Data acquisition from current/voltage transformers and energy meters.
Test & Measurement: High-speed data logging for quality control systems.
Water & Wastewater Treatment: Reading signals from level, pressure, and flow transmitters.
High-density 8-channel AI: Captures 8 analog signals in a compact 45 mm width module.
Flexible input selection: Each channel can be individually configured for ±10V, ±5V, ±2.5V, 0‑20mA or 4‑20mA inputs.
13-bit resolution (12 bit+sign): Provides accurate signal representation for reliable process control.
Fast conversion time: Cycles all 8 channels in just 625 µs, supporting dynamic processes.
Comprehensive diagnostics: Features diagnostic alarms, wire-break detection, and supply voltage monitoring for easy troubleshooting.
Signal filtering: Parameterizable smoothing of measured values (None, Low, Medium, High) to improve signal quality.
Analog-to-digital conversion: Transforms real-world analog signals (voltage/current) into digital values for the S7-1200 CPU to process and monitor process variables like temperature, pressure, and flow.
Configurable measuring ranges: Each input channel can be independently configured via TIA Portal as a voltage (e.g., ±10 V) or current (e.g., 4‑20 mA) input, ensuring compatibility with a wide variety of field transmitters.
Diagnostic monitoring: Continuously monitors the supply voltage of the module and checks each input for wire breaks, automatically generating an alarm to the CPU in case of a fault.
Signal smoothing: Applies adjustable digital filtering to reduce noise on the input signal without the need for external hardware, stabilizing the displayed values for slower processes.
Electrical isolation: Provides 500 V AC isolation between the backplane bus and the analog inputs, protecting the central controller from electrical interference.
Q1: How many analog input channels does the 6ES7231-4HF32-0XB0 provide?
A1: The 6ES7231-4HF32-0XB0 has 8 differential analog input channels.
Q2: What types of signals can be connected to this SM 1231 module?
A2: It supports voltage signals of ±10 V, ±5 V, ±2.5 V, and current signals of 0‑20 mA or 4‑20 mA.
Q3: How quickly does the module convert its analog inputs?
A3: The conversion time for all 8 channels is 625 µs maximum.
Q4: Can the module detect a broken sensor wire?
A4: Yes, the 6ES7231-4HF32-0XB0 features a wire-break diagnostic function that alerts the CPU if a signal drops out.
Q5: What is the resolution of the analog conversion?
A5: The module provides a 12-bit resolution plus a sign bit (13-bit ADC) for precise measurement.
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