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7MH4138-6AA00-0BA0 Siemens

Name: 7MH4138-6AA00-0BA0 Siemens
Brand: Siemens
SKU: 7MH4138-6AA00-0BA0
Price: 673.75 USD
Availability: InStock

$673.75 - $1,237.50

$673.75

$673.75 - $1,237.50

$673.75

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Product Details

Description · Specifications · Product Overview

Specifications provided for reference. Verify critical details against official manufacturer documentation before installation.

Product Overview

The Siemens 7MH4138-6AA00-0BA0 is a SIMATIC ET 200SP module, specifically the TM SIWAREX WP321 ST single-channel weighing electronics module. It integrates on SIMATIC ET 200SP distributed automation platforms and interfaces with analog full-bridge load cells (1-4 mV/V) and strain gauges. Communication is via RS-485, enabling diagnostics integration within industrial weighing or batching systems. Typical applications include platform scales, hopper scales, filling systems and material handling modules requiring precise weight measurement, integrating directly into SIMATIC control systems. The module supports advanced diagnostics when paired with the SIWAREX DB junction box, enhancing maintenance visibility.

Best Suited For

Platform or hopper scale integration in SIMATIC ET 200SP
Analog full-bridge load cell (1-4 mV/V) weighing systems
Weighing system diagnostics when used with SIWAREX DB
SIMATIC S7-1200/1500 system integration via RS-485

Weighing channel

single-channel

Load cell interface

1×LC (1-4 mV/V)

Communication

1×RS-485

Module weight

0.200 kg

Technical Specifications

I/O & Electrical

Load cell excitation voltage

4.85 V DC

Permissible load resistance

> 330 Ω - < 4 100 Ω

Resolution of input signal

±500 000 parts per mV/V (-1…+1 mV/V); up to ±2 000 000 parts (-4…+4 mV/V)

Sampling rate

600 Hz

Common-mode voltage range

0.25 V … 4.75 V

Input resistance signal line (typ.)

4 MΩ

Input resistance sense line (typ.)

2 MΩ

Communication & Power

RS-485 transmission rate max.

115.2 kbit/s

RS-485 line termination

390 Ω, 220 Ω, 390 Ω connectable

Cable length, max.

1 000 m at ≤ 115 kbps (shielded)

Monitoring

Supply-voltage, wire-break, short-circuit, group-error diagnostics

LED indicators

PWR (green), DIAG (green/red)

Physical & Environmental

Module weight

0.200 kg

Mounting platform

SIMATIC ET 200SP

Diagnostics with SIWAREX DB

detailed load-cell diagnostics when used with SIWAREX DB (e.g. 7MH5001-0AD20)

Mechanical coding

type B coding

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Rockwell Automation documentation

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