Manual

Addressing from Data Highway II
Chapter 4
42
You use local addressing to communicate with a node on a local Data
Highway Plus link. A local Data Highway Plus link:
Is directly connected to the Data Highway II link you are
communicating from.
Has a link value of zero.
Figure 4.1 shows an example of a configuration which uses local
addressing.
Figure 4.1
Local
Addressing Configuration
1779KP5
Data Highway II
1784T50
PLC5
PLC5Data Highway
Plus
Sending
Node
16487
Important: A computer on Data Highway Plus cannot address a node on
a remote link such as Data Highway II.
When you use local addressing to address a Data Highway Plus node, you
can only use Addresses 01 through 20 (octal) on the Data Highway Plus
link.
When you use local addressing, you use the LINK, NODE, and USER
fields to specify the node address.
The LINK value is always zero for local commands.
Addressing a Data Highway Plus
Node Using Local Addressing