User's Manual

Installation
20 Issue 1 November 1998
and plug one EOL terminator into the wallboard on the other end of
the RS-485 transmission line (see Figure 8).
Figure 8. Converter Box on One End of Transmission
If the converter box is not on one end of an RS-485 transmission
line, set the termination switch to “unterminated” and place one
EOL terminator into the wallboard at each end of the transmission
line (see Figure 9).
Wallboards
An EOL Terminator is
Modular Network
RS-485 Cable
Converter
RS-232 Cable
A DB25-to-DB9 Adapter
Serial port of device
Box
Adapters with
4-wire data cables
may be required
containing application software
plugged into the last
display on the network
Set the terminal switch on the converter box to terminated .
Attach on EOL terminator to the last wallboard on the network.
Attach one RS-485 cable directly to the terminal block on the converter box.