Manual

Addressing from Data Highway II
Chapter 4
45
Addressing Data Highway Plus from a PLC3
To send a message from a PLC-3 (1779-KP3) on Data Highway II to a
Data Highway Plus node, you use the following address format in the
message instruction of your ladder-logic program (NNN = Node,
UUU = User):
:NNN.UUU
The 1779-KP3 does not support the network layer. The LINK value is
automatically 00 (local link).
The NODE value is the node address of the 1779-KP5 that connects you
to the destination Data Highway Plus link (the link that contains the node
you want to communicate with).
The USER value is the Data Highway Plus address of the node you want
to communicate with.
For example, a PLC-3 message instruction to read a file from a PLC-5:
with Data Highway Plus Address 012 (octal)
connected to the 1779-KP5 with a Data Highway II address of 045
(octal)
would look like this:
MOVE FROM :45.12$E0.10.0.0 TO $N10:0,20
If you are communicating to a PLC-5, you need to send a PLC-5
four-level address instead of a six-level address:
Address Level PLC3 PLC5
1 Major Section
3 = Data T able
Major Section
0 = Data T able
2 Context File Number
(Must Be 0  15)
3 Section Element
4 File SubElement
5 Structure 
6 Word 