Eight-Port Hub Devices for Modbus Connections

R95C Modbus Hubs

The R95C 8-Port Modbus Hub efficiently gathers large amounts of discrete or analog data from sensors, consolidates it, and sends it to a control system. On discrete hubs, each input port has two discrete channels (either PNP or NPN). Each port on analog hubs can be configured to transmit current or voltage signals.

  • Discrete hubs convert signal inputs and outputs the values to defined Modbus registers and can function as a smart logic device, able to store valuable sensor data directly on the hub
  • Discrete hubs feature multiple delay modes and measurement metrics, and can mirror discrete signals (In/Out) from any of the eight ports to another port
  • Analog hubs can consolidate up to eight 0–10 V DC or 4–20 mA analog signal inputs, then send them via Modbus back to a PLC, HMI, SCADA system, or cloud platform
  • Mounting near sensors on a machine reduces or eliminates need for expensive I/O cards in PLC
  • Consolidation of up to eight cables reduces installation time and wiring between sensors and control panel
  • Slim, compact, stackable form factor is IP67- and IP68-rated for installation and use in many spaces and challenging industrial environments
  • Side ports enable cable routing without sharp bends, helping reduce cable damage and related maintenance time and cost

Downloads

Technical Literature

Date
Type
Size
R95C 8-Port Analog In to Modbus® Hub Instruction Manual
6 Aug 2024
Product Manual
3.8MB
R95C 8-Port Analog In to ModBus® Hub Quick Start Guide
24 Oct 2023
Other
138K
R95C 8-Port Discrete Bimodal to Modbus Hub Instruction Manual
29 Mar 2023
Product Manual
3.2MB

Siemens Functions

Date
Type
Size
R95C MDR Series Siemens Functions
24 Mar 2026
Siemens Functions
3MB

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  1. R95C-8B21-MQ

    logo with r symbol

    R95C Series: 8-port Discrete Modbus Hub
    RS-485 Interface
    Female: Discrete Input/Output M12 4-pin
    Male: Modbus M12 5-pin

  2. R95C-4B4UI-MQ

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    R95C Series: 8 Port Hybrid IO Modbus Hub
    4 Analog Inputs and 4 Analog Outputs and 8 Discrete Inputs or 8 Discrete Outputs (Configurable)
    RS-485 Interface
    4-pin M12 QDs

  3. R95C-8UI-MQ

    logo with r symbol

    R95C Series: 8 Port Analog Modbus Hub
    Modbus RTU Interface
    8 Current or Voltage Inputs
    4-pin M12 QD

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