REC 3838 6-6
RS-485 CONNECTIONS
FIGURE 6-3
RS-485
The connections in Figure 6-3 show the typical connections to hook up the RS485
to your external device. The cabling shown includes a converter that changes the
output back to RS-232 before entering your device. If your device has RS-485
capability built in, the converter can be removed and your device hooked directly
to connector P2.
To make the Comm Loop Back test pass, hook a jumper between pins 2 and 3. If
the converter box is not used, connect pins 2-5 and 14-17 on connector P2.