Rockwell Automation 1785-KA5P/B DHP COMM. ADAPATER MOD. - Manual (Page 31)

Communicating through the 1785ĆKA5
Communication Adapter Module
Chapter 3
3-3
DH+/DH485 STATION Address
The DH+ and DH485 address is the low level physical address that
identifies a device on a single physical network. Each physical device must
have a unique STATION address on that link. You set the STATION
address using the switches on the interface module. Valid physical
addresses are 0-77 octal for the DH+ network and 0-31 decimal for the
DH485 network.
Important: Each physical device on a link must have a unique address on
that link. Two devices can not have the same address.
For example:
Figure 3.1 on page 3-2 shows a DH+ network with a LINK_ID of 1
connected to a DH485 network with a LINK_ID of 2 by a 1785-KA5
module. Both networks have stations with addresses of 5, yet each device
has a unique IP address.
This device Has this IP address
device 3 on the DH+ network LINK_ID = 1, station = 3
device 3 on the DH485 network LINK_ID = 2, station = 3