Siemens 7MH4910-0AA01 ET 200S Weighing Electronics Module
Legacy SIWAREX CS weighing electronics for one scale in compatible SIMATIC ET 200S head stations.
Overview
7MH4910-0AA01 is a Siemens SIWAREX CS weighing module for one scale. It integrates into compatible ET 200S head stations and provides an RS232 link for a PC plus a TTY interface for a remote display.
The article entered the spare-and-repair support phase after cancellation, so the existing scale wiring and configuration should be preserved carefully.
Specs
| Manufacturer | Siemens |
|---|---|
| Article Number | 7MH4910-0AA01 |
| Product Family | SIWAREX CS |
| Scale Capacity | One scale |
| Host System | SIMATIC ET 200S |
| Compatible Head Stations | IM 151-1 Basic, Standard, High Feature and IM 151-7 CPU |
| Service Interface | RS232 for PC connection |
| Remote Display Interface | TTY |
| Supply | 24 V DC |
| Input Current | 0.15 A |
| Ambient Range for Certified Use | 0 to +60 °C |
| Lifecycle | Cancelled from 23 October 2023; spare-only status |
Features
- Direct weighing integration inside a distributed ET 200S station.
- PC service connection through RS232.
- TTY interface for a compatible remote weight display.
- Single-scale architecture for compact weighing applications.
Applications
- Legacy batching, filling or level-by-weight systems using ET 200S.
- Maintenance of a validated SIWAREX CS scale without changing PLC and field wiring.
- Spare support where the original module parameters and calibration data are available.
Lifecycle
- Archive scale parameters, calibration records and the PLC project before removal.
- Confirm the exact IM 151 head station and ET 200S terminal arrangement.
- Record load-cell wiring, remote-display connection and mechanical zero conditions.
- Evaluate a supported SIWAREX platform as a planned migration rather than a plug-in exchange.
FAQ
Can 7MH4910-0AA01 operate two independent scales?
No. 7MH4910-0AA01 is specified as weighing electronics for one scale.
Which ET 200S head stations support 7MH4910-0AA01?
The Siemens record lists IM 151-1 Basic, Standard, High Feature and IM 151-7 CPU.
What should be backed up before replacing 7MH4910-0AA01?
Preserve module parameters, scale calibration, PLC hardware configuration and operating records.
Is 7MH4910-0AA01 still a current-production product?
No. Siemens lists it as cancelled from 23 October 2023 and available only within spare support.
Can a current SIWAREX module directly replace 7MH4910-0AA01?
Not without reviewing the ET 200S station, PLC software, wiring, scale calibration and approvals.
Which interfaces are built into 7MH4910-0AA01?
It includes RS232 for a PC connection and a TTY interface for a remote display.
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