SIMATIC S7-400 · ISOLATED 8-CHANNEL ANALOG INPUT
A precision input module for voltage, current and resistance signals in SIMATIC S7-400 automation systems.
Siemens 6ES7431-1KF20-0AB0 is an SM 431 analog input module with eight isolated inputs, 14-bit resolution and a 0.42 ms basic execution time for all released channels.
The module supports voltage, current and resistance measurement. Project engineering should match the configured measuring range, encoder wiring, shielded cable routing and the installed S7-400 hardware configuration.
| Record | Manufacturer-Verified Position |
|---|---|
| Complete order number | 6ES7431-1KF20-0AB0 |
| Lifecycle | Product Cancellation |
| Product class | Straightforward, can be reused over the short term |
| Official evidence | Siemens SiePortal product record for the complete order number |
| Parameter | Verified Detail |
|---|---|
| Product designation | SIMATIC S7-400 SM 431 analog input module |
| Controller system | SIMATIC S7-400 |
| Analog inputs | 8 isolated inputs |
| Measurement types | Voltage, current and resistance |
| Resolution | Up to 14 bit including sign |
| Basic module execution time | 0.42 ms with all channels released |
| Voltage ranges | 1 to 5 V; -1 to +1 V; -10 to +10 V |
| Current ranges | -20 to +20 mA; 4 to 20 mA |
| Resistance range | 0 to 600 ohms |
| Shielded cable length | Maximum 200 m |
| Module dimensions | 25 × 290 × 210 mm |
| Approximate module weight | 500 g |
| Country of origin | Germany |
Use current photos of the front label, connector area and complete module to verify the exact order number and physical configuration.
Acquires eight isolated voltage, current or resistance signals for configured S7-400 process measurements.
Fits the SIMATIC S7-400 system and requires the correct rack position, front connector and project parameters.
Supports replacement planning when the installed unit carries the identical order number and configured measuring ranges.
Match the full order number 6ES7431-1KF20-0AB0 and visible hardware revision.
Verify the S7-400 rack, front connector assignment and configured measuring range for every channel.
Check two-wire or four-wire transmitter wiring and the required 24 V load supply before installation.
Archive the STEP 7 hardware configuration and channel parameters before replacement.
Siemens SiePortal lists the lifecycle as Product Cancellation for the complete order number 6ES7431-1KF20-0AB0.
It is a SIMATIC S7-400 SM 431 analog input module with eight isolated voltage, current or resistance inputs.
Siemens documents voltage ranges including 1 to 5 V, -1 to +1 V and -10 to +10 V, current ranges including -20 to +20 mA and 4 to 20 mA, and resistance up to 600 ohms.
Siemens SiePortal lists the complete order number under Product Cancellation.
Check the rack position, front connector assignment, channel measuring ranges, transmitter wiring and archived STEP 7 configuration.
Send the complete order number, channel configuration and installed rack details for availability and compatibility review.
Email: sales6@apterpower.com | WhatsApp: +86 181 5988 9985
Application-Focused Industrial Support
A focused workflow for identification, S7-400 channel review, physical inspection and protected delivery.
STEP 01
We organize front-label, side-label and connector-area evidence around the complete order number, visible hardware revision and module condition.
STEP 02
The rack position, front connector, configured voltage/current/resistance ranges and transmitter wiring are reviewed for the requested SM 431.
STEP 03
Visible housing, connector and label condition are recorded before protective packing and shipment planning for the confirmed destination.
Supply and interchange review are tied to the complete 6ES7431-1KF20-0AB0 request, the installed S7-400 rack and documented channel parameters.
Send the module label, rack position and channel configuration for service scope, compatibility and delivery review.
Email: sales6@apterpower.com | WhatsApp: +86 181 5988 9985
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Send the exact model and quantity for availability, compatibility, warranty and worldwide delivery review.
Email: sales6@apterpower.com | WhatsApp: +86 181 5988 9985
