MW5502C - 2-Port Wireless Industrial Modbus Serial to Modbus TCP Gateway: DB9


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MPN: 1P1MW5502C0001G

Manufacturer: Atop Technologies Inc.

Delivery: Ships within 6-7 weeks
Qualifies for Free shipping to the US

Serial Connector Type

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Product Information

Product Description

 Diverse Hardware, Integrated Wireless, Serial and Ethernet

MW5502C Industrial Wireless Modbus Gateway provides a flexible platform to convert bi-directionally Modbus RTU/ASCII/TCP through wired and wireless Ethernet Networks. It supports IEEE802.11 b/g/n standards over 2.4GHz for Wireless connectivity, wired Ethernet through one RJ45 port and supports the four most commonly used communication standards in Serial: RS-232/485 and 422 on two DSub-9 or 5-Pin Terminal Block connectors.

The ease-of-use configuration utility provided can quickly select the hardware interface, and easily switch to the existing communication infrastructure.

Switching between Modbus Protocols
Modbus Gateway supports the standard Modbus protocol and is capable of converting any Modbus protocols between Modbus TCP, Modbus RTU, and Modbus ASCII for all supported hardware interfaces.

Modbus ID Routing
Modbus Gateway supports various types of hardware communication interfaces, Modbus protocol conversion, and Modbus ID routing. Therefore, the Modbus Gateway can integrate existing and complex Modbus hardware configuration into a simple easily managed network.

Order Summary

 SKU Serial Connector Option Manufacturer Part # (MPN)
GC-ATOP-MW5502C DB9 1P1MW5502C0001G


  • Designed for 802.11 b/g/n networks, FCC (USA)
  • 1 x 100BaseT(X) Fast-Ethernet RJ45 port
  • 2 x Software-selectable RS-232/485/422 ports, D-Sub 9 or Terminal Block
  • Bi-Directional Modbus TCP/RTU/ASCII conversion from Serial to Ethernet or Wireless and Vice-versa
  • Advanced features include Virtual ID remapping, VirtualCOM mode, exception handling and many others
  • Supports WiFi-Direct for Simple Peer Pairing
  • Web server / Utility configuration

Documents and Drivers


MW5502C Datasheet

MW5502C User Guide

MW5502C Hardware Installation Guide

MW5502C UKCA-Declaration of Conformity


Network Interface

  • Speed:  IEEE 802.3 for 10BaseT,   IEEE 802.3u for 100BaseT(X)
  • Connector Ports:  1x 10/100 BASE-TX RJ-45

Serial Connector

  • D-Sub9 RS-232/422/485 software selectable (DB models)
  • 5.08mm 5-Pin Terminal block RS-232/422/485 sw selectable (TB models)

Serial Mode

RS-232/422/485 software selectable

Serial Ports


Serial Baud Rate

110 ~ 921,600 bps software selectable

Serial Parity

None, Odd, Even, Space, Mark

Serial Data Bits

5, 6, 7, 8 software selectable

Serial Stop Bits

1, 2 software selectable

Serial Flow Control

None, Xon/Xoff, RTS/CTS

Wireless PCI-e Module

Atheros AR9382

Wireless Tx / Rx

1T1R MIMO (1 x 1 with MCS 0-7)

Wireless Standard Conformance

802.11b, 802.11g, and 802.11n

Wireless Operating Frequency

  • 2.4Ghz
  • United States (FCC):  2412-2462(20Mhz)/2422-2452(40Mhz)

Wireless Data Rate

  • 802.11b:   1, 2, 5.5 and 11Mbps
  • 802.11g:   6, 9, 12, 18, 24, 36, 48, 54Mbps
  • 802.11n (20MHz bandwidth):   20MHz bandwidth: 1Nss: 65Mbps @ 800GI, 72.2Mbps @ 400GI (Max.)
  • 802.11n (40MHz bandwidth):   40MHz bandwidth: 1Nss: 135Mbps @ 800GI, 150Mbps @ 400GI (Max.)

Wireless Antenna (2.4GHz)

  • Gain:   3 dBi
  • Connector:   SMA(R) Female

Wireless Output Power (2.4GHz)

802.11b:   +14dBm


  • +17dBm @ 6, 9, 12,18,24Mbps / +17dBm @ 36Mbps / +16dBm @ 48Mbps / +16dBm @ 54Mbps

802.11n 2.4GHz/HT20:

  • +16dBm @ MCS 0 +16dBm @ MCS 4 +16dBm @ MCS 1 +16dBm @ MCS 5 +16dBm @ MCS 2 +16dBm @ MCS 6 +16dBm @ MCS 3 +15dBm @ MCS 7   

802.11n 2.4GHz/HT40:   

  • +15dBm @ MCS 0 +15dBm @ MCS 4 +15dBm @ MCS 1 +15dBm @ MCS 5 +15dBm @ MCS 2 +15dBm @ MCS 6 +15dBm @ MCS 3 +14dBm @ MCS 7


IPv4, ICMP, TCP, UDP, DHCP Client, SNMPv1,v2c,v3, SMTP, HTTP, DNS, NTP,
RADIUS, RFC2217, WPS, SysLog, Modbus TCP, Modbus RTU, Modbus ASCII

Wireless Security

WEP, WPA, WPA2, TKIP, AES, 802.1x


Atop Management Utility, Web UI, Telnet, Serial Console


Windows/Linux redirection software

Modbus - TCP Client

Maximum 16 Modbus TCP client connections, Modbus RTU/ASCII via VirtualCOM

Modbus - TCP Server

Maximum 64 Modbus TCP connections; Modbus RTU/ASCII via VirtualCOM or reverse Telnet

Modbus - RTU/ASCII

Maximum 16 devices per COM port.

Power Input Voltage

9 - 48 VDC

Power Input Current

0.65 A @ 9 VDC

Power Consumption

Approximately 5.85 W (Max)

Power Connector

3-Pin 5.08mm Lockable Terminal Block

Reverse Polarity Protection



IP30 SPCC housing


47 mm x 110 mm x 90 mm (1.9 in x 4.3 in x 3.5 in)


500g (1.1 lbs)


IP30 SPCC housing

Reset Button


Wi-Fi Direct(P2P) Button



  • Operating:  -10°C ~ 60°C (14°F ~ 140°F)
  • Storage:   -40°C ~ 85°C (-40°F ~ 185°F)
  • Ambient Relative Humidity:   5%~95%, 55°C (Non-condensing)

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