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'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.
- 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
- STM-501C
- CD Manual/Software
- Terminal Blocks
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- GC-F09F09-N
- Mini Gender Changer DB9 F/F Null Modem
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- GC-F09F09-S
- Mini Gender Changer DB9 F/F Straight
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- GC-F09M09-N
- Mini Gender Changer DB9 F/M Null Modem
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- PA-STX-US
- Power Adapter for STE(W)-501/601 & LNX/IMC (US Plug). Input: AC 100-240V 50/60Hz 0.4A ; Output: DC 12V 1.25A
- IEEE 802.3 10Base-T Ethernet
- IEEE 802.3u 100Base-TX Fast Ethernet
- Output: 64K bytes
- Input: 8K bytes per port
- RS-232 - TX, RX, RTS, CTS, DTR, DSR, DCD, GND
- RS-422 – TX+, TX-, RX+, RX-, RTS+, RTS-, CTS+, CTS-, GND
- RS-485 - Data +, Data –, GND
- Serial Manager,
- Web UI
