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

The STM-501C, MODBUS gateway allows the legacy MODBUS RTU/ASCII devices to operate on a MODBUS TCP network. It allows either MODBUS serial master or slave to communicate with MODBUS TCP #39;s slave or master. Modbus TCP masters to Modbus RTU/ASCII slaves: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. Modbus RTU/ASCII master to Modbus TCP slaves: When 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. Inactive timeout: The STM-501C provides 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 tear down it would occupy one connection slot and prevent any another connection again. Configuration tools: User friendly management software provides an easy way to configure the STM-501C. It can search all serial device servers within a local area network independent of its subnet. It can also find a serial device server of a specific IP address over a wide area network. The STM-501C can also be configured by its console port or through telnet connection. The STM-501C provides a web interface for the user to configure it with a web browser. FEATURES - DIN-Rail or Panel Mount - Supports 10/100 Mbps Ethernet - Supports RS-232, RS-422, and RS-485 Serial Interface - Supports LAN and WAN Communications - Management Access Password Protected - Supports up to 8 MODBUS TCP Master to MODBUS RTU/ASCII - Supports Inactive Timeout - Supports Loop Back Mode SPECIFICATION Dimensions: 3.35 x 4.5 x 0.90 in (8.5 x 11.5 x 2.3 cm) Power Requirements: 7 ~ 30 VDC, 500 mA Warranty: 5-year Warranty LAN: 10/100 Mbps Auto-detecting - 10 Base T, 100 Base TX Management: Manager software, Serial Console, Telnet, Web server Firmware upgradeable Serial Buffer Output: 64K bytes Serial Buffer Input: 8K bytes per port Protocols: TCP, IP, ARP, DHCP, Telnet, HTTP, UDP, ICMP Operating Temperature: 0 to 50 °C (32 to 122 °F) Storage Temperature: -20 to 60 °C (-4 to 140 °F) Humidity: 0 to 90% Non-Condensing Data Rate: 110 bps to 230.4 kbps Approvals: CE, FCC RS-232 Serial Interface: TX, RX, RTS, CTS, DTR, DSR, DCD, GND RS-422 Serial Interface: TX+, TX-, RX+, RX-, RTS+, RTS-, CTS+, CTS-, GND RS-485 Serial Interface: Data +, Data -, GND Data Bits: 5, 6, 7 or 8 Stop Bits: 1, 1.5 or 2 Serial Connection: DTE - DB-9 Male Parity: none, even, odd, mark, space PACKING LIST - Unit STM-501C - Terminal Blocks - CD Manual/Software