Rockwell Automation 1775-S5_SR5,D17756.5.5 User Manual PLC-3 FAMILY I/0 - Manual (Page 84)

Addressing DH and DH+ Data Transfers
Chapter 5
5-10
Figure 5.8 shows the format for addressing data at remote stations on a
local link. The pound sign (#) specifies a remote station on a DH or DH+
link.
Figure 5.8
Example for Addressing a Word in a Remote Station on a Local DH/DH+
Link
# H 020 $ B 15:9
15420
Address delimiter
Port indentification for data highway port
Remote station delimiter
Word address at remote station
# H 020 @ WORD_9
Remote station number 20 (octal)
Port indentifier for data highway port
Remote station delimiter
Remote station number 20 (octal)
Symbolic word address defined at remote station
Remote station addresses have the following restrictions:
You can only use a remote address with the single equals sign (=) type
of assignment command.
In the assignment command, either the source or the destination, but not
both, can be a remote address.
A remote address can contain an embedded expression, but you cannot
embed a remote address in an expression.
You can substitute symbols or logical addresses for the remote
station number.
For example, the remote station being addressed by #H($N1:0)$B15:9
will be the integer value contained in N1:0.
Addressing Stations on a
Local Link