Signal Interface Products 991635 - RS232/RS485 - Instructions Brochure
Note: VOLTAGE LEVEL CONVERTER ONLY, INDEPENDENT OF PROTOCOL. Module Functionality: The unit is factory configured to interface to a standard IBM PC RS232 9 pin port with a “straight through” cable. The unit only uses 2 or 3 lines (plus ground) of the RS232 interface. Rx and Tx are always used. It is possible to permanently drive the RS485 ...