Antaira STM-501C Modbus TCP to Serial RTU/ASCII Gateway

Antaira STM-501C Modbus TCP to Serial RTU/ASCII Gateway
Model: STM-501C
Availability: IN STOCK
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Antaira STM-501C 1-Port Modbus TCP to Serial RTU/ASCII Gateway

The STM-501C, MODBUS gateway allows legacy MODBUS RTU/ASCII devices to operate on a MODBUS TCP network. MODBUS serial master or slave may communicate with MODBUS TCP's slave or master. For Modbus TCP master to Modbus RTU/ASCII slave mode, the STM-501C allows multiple MODBUS TCP masters to communicate with a MODBUS serial network. Since a MODBUS serial network can only handle one query at one time, queries from different masters are pipelined and processed one by one. For Modbus RTU/ASCII master to Modbus TCP slave mode, the STM-501C functions as the MODBUS RTU/ASCII master to MODBUS TCP slave gateway. The STM-501C can connect up to 8 MODBUS TCP slaves. Users can specify a UID range for each MODBUS TCP slave.

An inactive timeout that allows users to specify a time period to disconnect TCP/IP connection if there is no activity in the network. If the connection does not disconnect, it would occupy one connection slot and prevent any another connection again. User friendly software management tools offer an easy way to configure the STM-501C. The software utilities search all serial device servers within a local area network independent of its subnet. It will find a serial device server of a specific IP address over a wide area network. The STM-501C may be configured by its console port, through telnet connection, or by a web browser.

Key Features

  • 1 Fast Ethernet (10/100 Mbps) port
  • 1 serial interface that supports RS-232, RS-422, and RS-485
  • Supports LAN and WAN Communications
  • Management Access Password Protected
  • Supports Inactive Timeout and Loop Back Mode
  • Terminal blocks included
  • Includes mounting flanges; DIN-rail kit optional
  • Power Adapter sold separately
TypeSerial Connectivity
Ethernet Ports1 Fast Ethernet (10/100TX)
StandardsIEEE 802.3 10BASE-T / IEEE 802.3u 100BASE-TX
ProtocolTCP, IP, ARP, DHCP, Telnet, HTTP, UDP, ICMP
Industrial Protocol8 Modbus TCP Masters, 8 Modbus TCP Slaves
Serial Interface
CategoryModbus TCP to Serial
Serial Ports1 RS-232/422/485
Baud Rate110 bps to 230.4 Kbps
Data Bits5, 6, 7 or 8
Paritynone, even, odd, mark, space
Stop Bits1, 1.5 or 2
Network Management
System ConfigurationManager software, serial console port, telnet, web browser, firmware upgradeable
ConnectionTerminal block
Input Voltage7 to 30 VDC, 500 mA
Dimensions85 x 115 x 23 mm
MountingDIN-rail or wall mountable
Operating Temperature0 to 50°C
Storage Temperature-20 to 60°C
Humidity0 to 90% non-condensing
CertificationsCE, FCC
Warranty5 Years
Download NameFile Size
STM-501C Datasheet1.06MB
STM-501C User manual1019.16KB