GSE 60 SERIES Technical Reference Manual page 510

13-34 Chapter 13
GSE Scale Systems
Figure 13-17: RS-485 Installation
H D (2-
ALF UPLEX WIRE
Installing jumpers 1, 2 and 4 on the RS-485 option board electrically
connects pin RX B(+) to pin TX B(+), and pin RX A(-) to pin TX A(-) on the
option board. This effectively provides two + and two - pin connections,
enabling easy connection of network lines in parallel from device to device
without having to position two wires into the same lever socket. A B(+) line
from each device on the network should be connected in parallel to the
next device on the network. This is also true for all A(-) lines.
The units inside the two end-points of the network loop will utilize both A(-)
pin connections and both B(+) pin connections. The units at the end-points
of the network will utilize only one A(-) pin connection and one B (+) pin
connection.
)