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Industrial Modbus TCP to 4 port Serial (232,422,485) RTU/ASCII Gateway (EOT: -40?? to 70??C)

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normal delivery is 2 weeks from date of order. We will advise you within 48 hours of receiving your order the estimated delivery date.
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This product is available for pre-order only

 Product Description


The STE-604C-T is a Modbus gateway that is a bi-directional device for connecting new and existing Modbus/RTU or ASCII serial devices to newer Modbus/TCP devices. The STE-604C-T features two independent Ethernet ports with separate MAC addresses providing the ability for redundancy and reliability through multiple data paths. Master or slave mode can be selected on the serial port, allowing an Ethernet master to control serial slaves or allow serial masters to control Ethernet slaves. The STE-604C-T meets tough industrial standards to provide a cost-effective way of integrating Modbus TCP and Modbus ASCII/RTU devices to communicate with each other. This model has an extended operating temperature range -40° to 70°C.



  • 2*10/100 Mbps Ethernet Ports for LAN Redundancy
  • Integrates Modbus TCP and Modbus RTU/ASCII Networks
  • Supports Up to 921.6 kbps and Any Baud Rate Setting
  • Supports Up to 16 Connections per Serial Port Under Modbus Master Mode and 32
  • Sessions Under Modbus Slave Mode
  • Software-selectable RS-232/422/485 Communication
  • Automatic RS-485 Data Flow Control
  • Redundant Power Input: 12~48VDC
  • Power Polarity Reverse Protection
  • Overload Current Protection
  • DIN-Rail or Wall Mountable
  • Wide Temperature Model
  • 5-Year Warranty



Ambient Relative Humidity 5% to 95%, (non-condensing)
Baud Rate 50 bps ~ 921.6 kbps, any baud rate setting
Configuration Windows Utility, Telnet Console, Web Browser
Data Bits 5, 6, 7, 8
Dimensions 55 x 140 x 95 mm (2.17" x 5.51" x 3.74")
EMC CE, FCC Part 15 Subpart B (Class A)
Ethernet Port 2 with independent IP and MAC addresses
Ethernet Port 2*10/100T(X) auto negotiation speed, Full/Half duplex mode, and auto MDI/MDI-X connection
Flow Control XON/XOFF, RTS/CTS
Green RoHS Compliant
Hazardous Location UL/cUL (Class 1, Division 2, Groups A, B, C and D)
Housing Metal with solid mounting hardware
Input Voltage 12 to 48VDC, Redundant Inputs
LED Indicators Link / Act
LED Indicators System: Power, System Status
LAN: Speed, Link/Active
Serial: Tx, Rx
Mounting DIN-Rail Mounting, Wall Mounting
Operating Temperature -40° ~ 70°C
Operation Mode Modbus RTU Master/Slave mode
Modbus ASCII Master/Slave mode
OS Support 32-bit/64-bit Windows XP/Vista/7/8/8.1/10, Windows Server 2003/2008/2008 R2/2012/2012 R2
Overload Current Protection Present
Parity None, Odd, Even, Space, Mark
Port Type RS-232/422/485, software selectable
Power Connection Terminal block
Power Consumption 3.2 W
Processing Type Store and Forward
Protection 15 KV ESD for all signals
Protocols CSMA/CD
Reboot Trigger Built-in WDT (watchdog timer)
Reverse Polarity Protection Present
Serial Ports 4 - DB9 male
Serial Signals RS-232: TxD, RxD, CTS, RTS, DCD, RI, GND
RS-422: TxD+, TxD-, RxD+, RxD-, GND
RS-485: Data+, Data-, GND
Standards IEEE 802.3 10Base-T Ethernet
IEEE 802.3u 100Base-TX Fast Ethernet
Stop Bits 1, 2
Storage Temperature -40° ~ 85°C
Utility Software Antaira Device Configuration Utility
Warranty 5 Years
Weight 1.22 lbs (0.555 kg)



  • DIN-Rail and Wall Mounting Brackets with Screws
  • Quick Installation Guide
  • STM-604C-T



icon-pdf2.gif Hardware Manual

icon-pdf2.gif Product Datasheet

icon-pdf2.gif Quick Installation Guide

icon-pdf2.gif Software Manual

icon-pdf2.gif Utility

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