The embedded network specialist

Embedded Modbus RTU slave interface

Anybus CompactCom M30 Modbus RTU plug-in module

The Anybus CompactCom M30 for Modbus RTU is a complete embedded communication module and slave interface which enables your products to communicate on a Modbus RTU network. The module contains the complete functionality of industrial network slave/adapter interfaces and integrate through a standardized and network independent parallel or serial application interface towards the host automation device
Anybus CompactCom M30 - Modbus RTU
Primary network
Anybus CompactCom M30 - Modbus RTU
Anybus CompactCom M30 - Modbus RTU

Process data and Application Data Instances (Parameter Data) are accessed from the Modbus RTU network via normal Modbus commands. Diagnostic functionality is provided via the generic Diagnostic Object, and optional support for Channel and Identifier related diagnostics are provided via a dedicated Additional Diagnostic Object.

Forward compatible with M40

The CompactCom 40-series modules support the same APIs as the 30-series Modules. This means, if you are already using or want to combine the Modbus RTU with 40-series embedded Industrial Ethernet modules, it's possible to support both a mixture of CompactCom 30-series and 40-series modules within your embedded industrial device.

Features and benefits

  • A complete, interchangeable communication module with connectors
  • Short in-design with free assistance from HMS ensures a fast time to market
  • Pre-certified for network compliance (enables faster network certification)
  • Standard application hardware interfaces: 8-bit parallel and serial

Modbus RTU Slave Interface

  • Complete MODBUS RTU implementation (slave)), incl. MODBUS-ASCII-Protocol
  • MODBUS RTU Baudrate (1200-57.000 bit/s)
  • Standard interface via integrated galvanic isolation

New applications or designs

Although CompactCom 30 series is fully available and supported by HMS with network updates and maintenance, we recommend the new CompactCom 40 series for new designs, especially for Industrial Ethernet versions.

Technical specifications
Dimensions (L•B•H) 52 x 50 x 22 mm
51 x 37 x 16 mm (without housing)}
Operating temperature -40 to +70 °C
-40 to +85 °C (without housing)
Power requirement 3.3 VDC, ±0.15 VDC
Application Interface 8-bit parallel
Profile support Generic device
LED indication Integrated on front (with housing), via application interface (without housing).
Indicates Module Status and Network Status.
Connectors 1x 9-pin Sub-D9 female
>Galvanic isolation Yes
Mechanical rating IP20, NEMA rating 1
Mounting PCB mount (hook-on) or mounting clip (without housing), electrical via CompactFlash connector
Certifications CE, CULUS, RoHS

Part number(s)

Anybus CompactCom M30 MODBUS RTU D-Sub9 (bus)
Anybus CompactCom M30 MODBUS RTU D-Sub9 (bus)
Anybus CompactCom M30 MODBUS RTU D-Sub9 (bus) without housing
Anybus CompactCom M30 MODBUS RTU D-Sub9 (bus) without housing


CompactCom Host Connector
CompactCom Host Connector

Getting interested?

Are you interested in the Embedded Modbus RTU slave interface? Please request, without any obligation, for a quote. Would you like more information? Please send an email to or visit our contact page.
You can call us if you like, we can be reached at +31-40-2301.922. We are pleased to help you and do offer you practical advice and support.

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