Industrial Port-Powered RS232 to RS485 ConverterModel: CVT-485-1$32.95The CVT-485-1
is a compact, rugged, industrial-grade, port-powered, bi-directional
RS232 to RS485 converter, which can be used to convert any standard
unbalanced RS-232C port into a two-wire half-duplex balanced RS485 port
and vice versa.
This industrial-grade RS232 to RS485 converter operates within a wide temperature range (-40F to 185F / -40C to 85C), features 600W surge protection and 15kV static protection, and comes with a built-in 120 Ohm terminator for system reliability and easy installation. The unit is powered from the RS232 data line; it also supports data direction auto-turnaround, which automatically enables the RS485 transceiver when data is present on the RS232 side. Therefore, it requires no external power, software drivers or flow control, making the unit a rugged, highly reliable, and truly plug-and-play device. Declaration of Conformity | RS232 to RS485 Converter data sheet FEATURES (INDUSTRIAL RS232 TO RS485 CONVERTER) - Converts RS232 to 2-wire RS485 and vice versa. - 300 to 115.2K Baud operation (auto-sensing & self-adjusting). - Industrial grade with wide temperature range (-40F to 185F / -40C to 85C), surge (600W) and static protection (15kV). - Port-powered, no external power or RTS, DTR required. - Accepts external 5VDC regulated power if the port-power is insufficient. - Plug and play (hot-pluggable, data format auto-sensing & self-adjusting). - Data direction auto-turnaround, no flow control is required. - Built-in surge protection, static protection and circuit protection. - Built-in 120Ω end-of-line terminator for system reliability and easy installation. - Surface Mount Technology manufactured to ISO-9001 standards. - CE certified: strictly certified by world-class lab TUV. - 5-year manufacturer's warranty. 120 Ohm End-of-Line Terminator (Built-in) Self-explanatory, the 120 Ohm end-of-line terminator is to be connected at the end of the RS485/RS422 transmission line. This is important for building a reliable RS485/RS422 system, not only because of impedance matching, but also for the reduction of signal reflections and noise problems.
PRODUCT PHOTOS (INDUSTRIAL RS232 TO RS485 CONVERTER)
SPECIFICATIONS (INDUSTRIAL RS232 TO RS485 CONVERTER)
CONVERTER CONNECTOR / TERMINAL BLOCK PINOUTS
120 OHM END-OF-LINE JUMPER SETTINGS
IMPORTANT: Turn ON Jumper 120 (120 Ohm End-Of-Line Terminator) at both ends of the RS-485 bus. CONNECTIONS (RS485 BUS, RS232 EXTENSION)
TROUBLESHOOTING INSTRUCTIONS FOR RS232 TO RS485 CONVERTER
232Analyzer is an advanced RS232 Serial Protocol Analyzer software that allows you to control, monitor and analyze serial port (RS232 / RS485 / RS422 / TTL, etc.) activities. Not just the data, it also allows you to monitor or change RS-232's line states: RTS, CTS, DTR, DSR, DCD, and RI. The FREE version (no time limitation) can be downloaded from here.
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