Single-channel weighing electronics for platform and hopper scales using analog full-bridge load cells.
The Siemens 7MH4950-1AA01 is a SIWAREX U1 single-channel weighing module for SIMATIC S7-300 and ET 200M systems. Siemens specifies use with one platform or hopper scale and analog load cells or strain gauges arranged as full bridges. The module provides one RS232 interface and one load-cell interface with a 1 to 4 mV/V input range. Its current Siemens lifecycle wording is PM400: Product available (phase-out started), which should not be described simply as discontinued. Scale mechanics, load-cell sensitivity, cabling, calibration records, bus configuration and installed revision must be reviewed before procurement or field replacement.
Analog full-bridge load cells
1 to 4 mV/V
1 x RS232
S7-300 or ET 200M
| Parameter | Official value | Engineering relevance |
|---|---|---|
| Manufacturer | Siemens | Official manufacturer |
| Complete part number | 7MH4950-1AA01 | Exact order code |
| Type | SIWAREX U1 weighing module | Industrial weighing |
| Systems | S7-300 and ET 200M | Automation integration |
| Channels | 1 | One scale |
| Sensors | Analog full bridge | Weighing input |
| Load-cell interface | 1 x LC | Sensor connection |
| Input range | 1 to 4 mV/V | Sensitivity |
| Service interface | 1 x RS232 | Commissioning |
| Lifecycle | PM400: Product available (phase-out started) | Exact wording |
| Net weight | 0.220 kg | Planning |
PM400: Product available (phase-out started).
Low-level mV/V load-cell wiring requires disciplined shielding and separation from power conductors.
Match the complete suffix, revision, accessories, engineering project and connected system before installation.
One platform or hopper scale.
One weighing channel.
Analog full-bridge load cells or strain gauges, 1 to 4 mV/V.
Siemens states PM400: Product available (phase-out started), not simply discontinued.
Calibration data, parameters, wiring identification and label photos.
Product Condition: Original new | Availability: In stock | Warranty: With 1 year warranty
Condition, availability and warranty are Stockoems commercial terms, not manufacturer commitments. Confirm the complete suffix, hardware revision, firmware, accessories and system compatibility before ordering.
Send us the complete part number, required quantity, destination country and product label photos. Our team will check availability, condition, compatibility requirements and shipping options.
Email: sales6@apterpower.com WhatsApp: +86 18159889985
A documented workflow helps procurement teams and engineers evaluate identity, condition, compatibility, packing and after-sales responsibilities before an order proceeds.
Model and suffix verification
Condition confirmation
Product and label photo confirmation
Technical compatibility review
Revision and accessory checks
Application requirement review
Protective packaging
Worldwide shipping
Shipment tracking
Customs documentation
Written warranty terms
Return authorization process
After-sales response
Request the exact model and suffix, current product and label photos, written condition terms, traceable inspection records and a defined return process.
Compare the quotation, complete part number, quantity, condition, warranty scope, shipping terms, customs documentation and legal company details.
Review suffix accuracy, hardware and firmware revision, interfaces, accessories, system compatibility and clear label photographs.
Risk signals include incomplete model numbers, reused photos, unverifiable labels, unsupported technical claims and vague warranty language.
Send us the complete part number, required quantity, destination country and product label photos. Our team will check availability, condition, compatibility requirements and shipping options.
Email: sales6@apterpower.com WhatsApp: +86 18159889985
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Send us the complete part number, required quantity, destination country and product label photos. Our team will check availability, condition, compatibility requirements and shipping options.
Email: sales6@apterpower.com WhatsApp: +86 18159889985
