Description ODSL 30
Leuze electronic GmbH + Co. KG
ODSL 30
23
Figure 3.8: Voltage divider for the RS 485 bus termination
The RS 422 connection does not require a bus termination for cable lengths up to approx. 20m and data
rates less than 9600 baud.
Further information:
• RS 422: Electrical specification acc. to DIN 66259, Part 3
• ISO 8482: Abstract
Specifies the physical medium characteristics for twisted pair multipoint interconnections in either 2-
wire or 4-wire network topology, a binary and bi-directional signal transfer, the electrical and
mechanical design of the endpoint system branch cables and the common trunk cable which may be
up to 1200m in length, the component measurements of the integrated type generators and receiv
-
ers within the endpoint system, the applicable data signalling rate up to 12.5 Mbit/s.
+24 V
15 k
Ω
470
Ω
1,5 k
Ω
A (Tx+)
B (Tx-)