Emerson Machinery Health AMS 6300 SIS Operating Manual page 41

Operating Manual
MHM-97442
Figure 4-16: Connection diagram with external bus termination
A. Interface converter
B. Backplane
C. Monitor A
D. Monitor B
E. Monitor C
F. 120 Ω bus termination
Note
To preserve the functionality of the RS 485 bus in case of a card exchange, transfer the
positions of the jumpers to the new monitor.
Alternatively, make the bus termination with a 120 Ω resistor between pins 2 (RS 485 A)
and 15 (RS 485 B) of the digital terminal block of the last monitor connected to the bus.
This has the advantage of maintaining the bus termination in case of card exchanges (see
Figure
MHM-97442, Rev. 2.06
4-16).
Installation and commissioning
February 2023
41