The Model 8322 RS-232 to RS-485 Interface Converter allows information
exchange in half duplex mode over two twisted pairs. It converts RS-485
signals to RS-232 signals, bidirectionally, on the DIN rail mounting
system. This conversion is accomplished while maintaining optical isolation
between the ports. Model 8322 allows for the extension of RS-485 links
to a maximum limit of 3300 feet or 1 km at any data rate up to 38.4
The Model 8322 includes TD and RD LEDs as well as a built-in power
supply. The power input is standard for 110 Volts/60 Hz or 220 Volts/50
Hz as an ordering option. All the inputs and outputs are via screw terminals
located on the top surface of the device.
A full complement of dip switches are provided to select data rate,
byte format, master/slave configuration as well as pull up and pull
down resistors on all received data lines as well as terminal loads
for transmitters and receivers. The user also has the ability to configure
the grounding scheme for the four wire links.