Table of Contents
Advertisement
TM
Macurco
Macurco RD-24 Manual
3.2.3 RS-485 Communication Connection
For RS-485 or communication connection it is recommended to always use a twisted wire to reduce noise and allow for reliable
data communication over greater distances. For best performance use shielded 3-conductor wire with one twisted pair
providing a pair for signal (A & B), common (COM) and shield ground (SHD) connection.
NOTE: Running the RS-485 cable adjacent to or in the same conduit with high voltage wires is not recommended as there may
be interference from the high voltages.
The RD-24 provides integral termination for end of line resistors (EOL). The termination uses a 4-pin connector (labeled J8) to
select termination. Place the EOL jumper on one of the following positions:
•
NU = No termination (default)
•
120 = 120 Ohm
•
100 = 100 Ohm
REV – 1.0.0
Figure 3-3 – EOL Jumper Placement
[34-8708-4770-1]
6 |
P a g e
Advertisement
Table of Contents
