The Siemens 7MH4138-6CA00-0CU0 is a SIMATIC ET 200SP TM
SIWAREX WP341 HF single-channel weighing module designed for conveyor-belt
scales and solids flowmeters. It interfaces with analog load cells or
full-bridge strain gauges using a 1–4 mV/V load-cell signal. The module
provides 3 digital inputs, 3 digital outputs, 1 counter input, RS485 and
Ethernet, together with a dedicated load-cell interface. Siemens specifies
compatibility with a type U0 Base Unit and support for decentralized
operation with SIMATIC S7 systems and standard PROFINET controllers. The module
supports load-cell diagnostics, including use with SIWAREX DB digital junction
boxes.
2. Technical Specification
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Specification
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Details
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Manufacturer
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Siemens
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Product Code
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7MH4138-6CA00-0CU0
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Product Family
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TM SIWAREX WP341 HF weighing electronics
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Product Type
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Single-channel weighing module
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Application
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Conveyor belt scales and solids flowmeters
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Load Cell Interface
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1 channel, 1–4 mV/V
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Digital Inputs
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3
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Digital Outputs
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3
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Counter Input
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1
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Serial Interface
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RS485
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Ethernet
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1 interface
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Base Unit
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Type U0
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Load Cell Sampling Rate
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1,024 Hz
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Load Cell Resolution
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±20,000,000 parts at 0–4 mV/V
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Maximum Cable Length
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500 m using specified SIWAREX cable
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Measuring Ranges
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-1…+1, -2…+2, and -4…+4 mV/V
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Operating Temperature
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-30 to +60 °C horizontal; -30 to +50 °C vertical
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3. Key Features
- Single-channel
SIWAREX weighing electronics.
- Designed
for conveyor belt scales and solids flowmeters.
- 1–4
mV/V load-cell interface.
- 3
digital inputs.
- 3
digital outputs.
- RS485
interface.
- Ethernet
interface.
- 1
counter input.
- 1,024
Hz load-cell sampling rate.
- ±20,000,000-part
resolution at 0–4 mV/V.
- Up to
500 m load-cell cable length with specified cable.
- Compatible
with U0-type Base Unit.
4. Typical Application
- Conveyor
belt weighing.
- Solids
flow measurement.
- Bulk-material
handling.
- Continuous
weighing systems.
- Industrial
process weighing.
- SIMATIC
ET 200SP distributed weighing systems.
- Factory
and process automation.
5. Product Highlights
The 7MH4138-6CA00-0CU0 integrates dedicated weighing
electronics into the SIMATIC ET 200SP architecture. Its single load-cell
channel, high-resolution measurement, RS485 and Ethernet interfaces, digital
I/O and SIWAREX DB diagnostic support make it suitable for continuous weighing
and solids-flow applications.
6. Important Ordering & Installation Information
The exact article number is 7MH4138-6CA00-0CU0. A U0-type
BaseUnit is required. Load cells or strain gauges must match the specified
full-bridge 1–4 mV/V interface. Siemens documentation identifies SIWAREX DB
digital junction boxes as compatible diagnostic accessories. Wiring, load-cell
cable selection, grounding and commissioning must follow the applicable SIWAREX
and ET 200SP documentation.
Always follow the manufacturer's official installation,
wiring, commissioning and safety instructions.
7. Why Choose Siemens 7MH4138-6CA00-0CU0 TM SIWAREX WP341
HF?
The 7MH4138-6CA00-0CU0 is suitable when continuous weighing
needs to be integrated into a SIMATIC ET 200SP automation system. Its dedicated
load-cell interface, high-resolution measurement, Ethernet and RS485
communication and digital I/O provide the core interfaces required for
conveyor-belt and solids-flow weighing applications.
8. Product Summary
The Siemens 7MH4138-6CA00-0CU0 is a SIMATIC ET 200SP TM
SIWAREX WP341 HF single-channel weighing module for conveyor belt scales
and solids flowmeters. It supports analog full-bridge load cells in the 1–4
mV/V range and provides 3 digital inputs, 3 digital outputs, a counter input,
RS485 and Ethernet. The module offers a 1,024 Hz load-cell sampling rate and
supports measuring ranges from -1 to +1, -2 to +2 and -4 to +4 mV/V. It
requires a U0-type Base Unit.
Product Code: 7MH4138-6CA00-0CU0
Manufacturer: Siemens
Product Family: TM SIWAREX WP341 HF weighing electronics
Product Type: Single-channel weighing module
