Rockwell Automation 1785-KA5P/B DHP COMM. ADAPATER MOD. User Manual
Page 30
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Communicating through the 1785ĆKA5
Communication Adapter Module
Chapter 3
3-2
For example:
In Figure 3.1, the DH+ LINK_IDs for all three 1785-KA5 modules must
be set to 1 (the DH+ LINK_ID.)
Figure 3.1
IP addressing
DH+ (LINK_ID = 1)
DH485 (LINK_ID = 3)
DH485 (LINK_ID = 2)
1785 -KA5
1785 -KA5
19199
1785 -KA5
DH485 (LINK_ID = 4)
5
5
DH+ LINK_ID 1,
station 2
DH485 LINK_ID 2,
station 10
DH485 LINK_ID 3,
station 11
DH+ LINK_ID 1,
station 3
DH+ LINK_ID 1,
station 4
DH485 LINK_ID 4,
station 12
Important: The following LINK_ID addresses are reserved:
This LINK_ID address
Is reserved for the
LINK_ID = 0
local network. When a station does not know its own LINK_ID, it can
specify 0 until it determines the value (from a router, for example)
LINK_ID = FFFFh
internet broadcast address. When using this address, the STATION
fields must also be all ones. The broadcast address is only permitted
in the destination field. The broadcast packet is routed to all internet
addresses