Rockwell Automation 1785-Lxxx Enhanced and Ethernet PLC-5 Programmable Controllers - Manual (Page 136)

Publication 1785-UM012D-EN-P - July 2005
9-4 Communicating with Devices on a DH+ Link
To configure a channel to support a DH+ link, use the DH+ configuration
screen in your programming software.
configure the channel
for DH+
This Field Specifies Configure by Doing the Following
Diagnostic file The file containing the channel’s
status information Enter an integer file number (10-999). The system creates an integer file
40 words long.
ATTENTION: Assign a unique diagnostic file to each channel. Do not
assign a diagnostic file that is the I/O status file you assigned or any
other used file. Unpredictable machine damage can result.
Important: You must define a diagnostics file for a channel configured for
anything but unused (even if you are not using the channel) if you want to
get status information for that channel.
Baud rate Communication rate for the current
channel If the DH+ channel is
channel 1A, specify the baud rate by setting SW1 (see chapter 23)
any other channel, select 57.6 kbps, 115.2 kbps, or 230.4 kbps through the
programming software
Node address The station address of your controller If your DH+ channel is:
1A—specify the DH+ station number by setting SW1 on your controller
(see chapter 23).
anything other than 1A—cursor to Node Address field, enter a value of
0-77 octal, and press
[Enter] .
Each station on a DH+ link must have a unique address.
Link ID The local link where the channel
resides If your DH+ link is bridged to another Data Highway network, cursor to the
field, type a decimal number to identify the protocol link to which the
channel is connected, and press
[Enter] .