MB5001C-SiS 1-port isolated RS-422/485(TB5-ISO) Modbus Gateway

MB5001C-SiS 1-port isolated RS-422/485(TB5-ISO) Modbus Gateway

SKU: ATO-162

Modbus TCP to Modbus ASCII/RTU converter gateway allows Modbus TCP masters to communicate with serial Modbus slave devices via isolated RS-422/485 interfaces with TB5 screw terminals.

  • Manufacturer: ATOP
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The Atop MB5001C series provides an interface between Modbus serial slave devices and hosts running Modbus/TCP on Ethernet networks. This low power, compact device is housed in a metal casing making them ideal for interfacing industrial equipment such as PLCs, HMIs, various sensors and measuring instruments. User friendly setup via a web based UI ensures simple integration even for complex configurations.

The MB5001C SiS series supports the two most commonly used serial communication interfaces, isolated RS-422 and RS-485. It also provides a web-based configuration UI, so the users can select the serial interface easily.


  • Rugged metal housing for wall or panel mount (DIN rail adapter clips available)
  • Ease-of-use in Modbus protocol conversion include RTU, ASCII and TCP
  • 10/100 Mbps fast Ethernet full duplex auto negotiation
  • Monitor, manage and control industrial field devices remotely
  • Configurable via built-in web server, serial console, and telnet
  • Upgradeable firmware from remote-PC via Ethernet
  • Compact design
    • SKU
    • Weight
      0.19 kg
    • Dimensions (L x W x H)
      16 x 14 x 5.5 cm


  • Input: 5 VDC (DC-Jack) or 9 to 30 VDC (screw terminals)
  • Consumption: ≤ 2.7 W


  • Interface: RS-232/422/485 software selectable 
  • Ports: 1 - port
  • Baud rate: 1200 bps to 230 Kbps 
  • Parity: None, Odd, Even, Mark, Space 
  • Data bits: 7, 8 
  • Stop bits: 1, 2 
  • Flow control:
    • None
    • Software: Xon/Xoff
    • Hardware: RTS/CTS 
  • Protection: 15 kV ESD 
  • Connector: 5 Pins Screw Terminal


  • Transmission rate: 10/100M Auto-detection 
  • Port: 1
  • Connector: RJ-45
  • Compliance: IEEE802.3
  • Auto MDI/MDI-X: Yes


  • Operating Temperature: 0 to 60 °C
  • Storage Temperature: -20 to 70 ºC, 5 to 95% RH 


  • EMC: FCC Class A, CE Class A


  • W x H x D: 65 x 28 x 78 mm


TB Pin
RS-422 Mode
RS-485 Mode

Faulty Goods and Warranty

Where such goods have been supplied we undertake to repair or replace them as quickly as possible.Prior to returning faulty items, please contact us with a description of the fault as one of our engineers might be able to assist you by resolving the issue over the phone.
A Warranty form must be filled out and returned with any goods.

Our standard warranty period is 12 months from the date of purchase unless stated otherwise.

Other warranty periods:

Labjack Products: 5 Years
Atop Products: 3 Years
MeanWell Products: 3 Years
Terracom Products: 3 Years

Warranty is subject to us being satisfied that a defect was caused by defective workmanship or materials and was not caused by or was not substantially contributed to by other factors beyond our control including incorrect installation, alterations or modifications of the product not recommended by the manufacturer.

Returns Policy

If you are dissatisfied with our goods you may return them within 14 days of the dispatch date. Contact us for an authorisation and we will refund your purchase less shipping costs and restocking fees. All returned goods MUST be in AS NEW condition including ALL PACKAGING and DOCUMENTATION / MANUALS etc.

Please note:

  • The product returned will attract a 20% restocking fee.
  • The customer must pay the delivery costs.
  • Non standard, custom made or a specially manufactured or imported products are not returnable.
  • Semiconductors, books and software are not refundable

Full Terms and Conditions

By placing an order with Ocean Controls, you agree to be bound by our Terms and Conditions of Trade.

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