User's Manual

Installation
16 Issue 1 November 1998
You may need additional parts that are not included:
■ DB9-to-DB25 cable—This is a cable to connect the 9-pin
RS-232 port on the converter box to a 25-pin serial port on
the PC.
■ Gender changer—Occasionally the serial port on a device is
the same as the port on the device to which it is connecting.
In this case you need a connector that changes the gender
of the connector to allow the cable to connect to the port on
the device.
NOTE:
Some gender changers also rearrange the pins in the
connector and therefore disrupt the communications to the
device.
Procedure
Follow these steps to connect the converter box to the PC
(see Figure 5):
1. Connect one end of the RS-232 cable to the serial port on
the PC and the other end to the converter RS-232 port. On
some PCs you may need to use a DB25-to-DB9 adapter for
the serial port. Figure 6 shows the pinouts for the RS-232
cable.
2. Connect one end of the RS-485 cable to the RJ11 jack (the
RS-485 port on the back of the converter box). Connect the
other end of the RS-485 cable to a modular network adapter
supplied with the wallboard in the following manner
(see Figure 7):
■ RS-485 positive wire (sometimes black) to the black
terminal
■ RS-485 negative wire (sometimes red) to the yellow
terminal
■ Shield wire to the red terminal