Home > Products > SIEMENS > SIMATIC S7 Series
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Complete model
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6ES7531-7NF10-0AB0
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Product family
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SIMATIC S7-1500 SM 531 analog input modules
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Product type
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AI 8xU/I HS high-speed analog input module
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System compatibility
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SIMATIC S7-1500 and ET 200MP
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Hardware status
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FS01
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Firmware version
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V2.1.0
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Supply voltage
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24 V DC; permissible range 20.4 to 28.8 V
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Current consumption
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240 mA maximum at 24 V DC
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Backplane bus power
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1.15 W
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Power loss
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3.4 W typical
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Analog inputs
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8 voltage or current inputs in one group
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Voltage ranges
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1 to 5 V; -5 to +5 V; -10 to +10 V
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Current ranges
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0 to 20 mA; -20 to +20 mA; 4 to 20 mA
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Resolution
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16 bit maximum, including sign
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Basic execution time
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62.5 us with all channels enabled
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Shielded cable length
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800 m maximum
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Overall accuracy
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+/-0.3% of input range for voltage or current
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Common-mode voltage
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10 V maximum
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Isolation test
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707 V DC type test
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Operating temperature
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0 to 60 deg C horizontal; 0 to 40 deg C vertical
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Installation altitude
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Up to 5,000 m; restrictions apply above 2,000 m
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Dimensions
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35 x 147 x 129 mm (W x H x D)
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Weight
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Approximately 300 g
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Front connector
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Not included; screw or push-in front connector ordered separately
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High-speed acquisition
The module has a 62.5 us basic execution time with all eight channels enabled.
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Oversampling
Oversampling is supported with 1 to 16 values per isochronous cycle.
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Runtime configuration
Reparameterization and calibration are possible during RUN.
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Shared input
Module-internal shared input (MSI) is supported.
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Eight analog inputs
All eight channels support voltage or current measurement in one group.
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Voltage measurement
Supported ranges are 1 to 5 V, -5 to +5 V, and -10 to +10 V.
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Current measurement
Supported ranges are 0 to 20 mA, -20 to +20 mA, and 4 to 20 mA.
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Encoder connections
Supports voltage encoders and 2-wire or 4-wire current transmitters.
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Diagnostic monitoring
Supply voltage, wire break, overflow, and underflow monitoring are available.
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Limit alarms
Two upper and two lower limit values can be configured for each channel.
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Status indication
RUN, ERROR, PWR, channel status, channel diagnostic, and module diagnostic LEDs are provided.
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Electrical separation
Channels are separated from the backplane bus and electronics supply; isolation is tested at 707 V DC.
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Module dimensions
The installed module measures 35 x 147 x 129 mm and weighs approximately 300 g.
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Mounting orientation
Operation is specified from 0 to 60 deg C horizontally and 0 to 40 deg C vertically.
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Included accessories
U-connector, power supply element, shield bracket, and shield terminal are included.
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Front connector
A screw-terminal or push-in front connector must be ordered separately.
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Q1. How can I verify that the quoted item is exactly 6ES7531-7NF10-0AB0?
Match the complete order number 6ES7531-7NF10-0AB0 on the quotation, product label, packaging, and invoice. Also confirm the AI 8xU/I HS designation, FS01 hardware status, and 35 mm module width.
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Q2. How can I distinguish a new unit from a used or refurbished unit?
Request current photos of the Siemens label, housing, terminals, front-door area, and packaging. Check for installation marks, connector wear, scratched terminals, replaced labels, or resealing, and require the supplier to state the condition in writing.
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Q3. How should a buyer verify that the supplier is legitimate and reliable?
Confirm the supplier legal name, registration details, physical address, business contact information, and bank beneficiary. Ask for transaction references involving Siemens SIMATIC S7-1500 modules and verify that all commercial documents identify 6ES7531-7NF10-0AB0 consistently.
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Q4. Which specifications should an engineer verify before purchasing?
Confirm 24 V DC supply, eight voltage/current inputs in one group, the required voltage or current ranges, 16-bit resolution, 62.5 us execution time, 10 V common-mode limit, 35 x 147 x 129 mm dimensions, and the separately ordered front connector.
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Q5. What physical evidence should be requested before payment?
Request timestamped photos or video showing the complete 6ES7531-7NF10-0AB0 label, Siemens packaging, module housing, terminal area, included U-connector and shielding set, and whether the required front connector is part of the offer.
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Q6. Can a similar Siemens order number or suffix replace 6ES7531-7NF10-0AB0?
Not automatically. A different suffix can change the module type, channel grouping, accuracy, speed, firmware functions, or connector requirements. Engineering must validate the exact ranges, performance, mechanical fit, TIA Portal compatibility, and wiring before approving a substitute.
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