Rockwell Automation 1785-Lxxx Enhanced and Ethernet PLC-5 Programmable Controllers - Manual (Page 162)

Publication 1785-UM012D-EN-P - July 2005
10-12 Communicating with Devices on a Serial Link
Configure Channel 0 as a Master Station
To configure channel 0 for DF1 master communication, use the system mode
configuration screen in your programming software.
configure the serial
communications as
system master
specify the details
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).
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 integer file. Unpredictable machine action 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.
Enable Whether the remote mode change
option is enabled Select ENABLED or DISABLED.
Mode attention char. The attention character for the system
mode or the user mode character for a
remote mode change Enter a valid attention character. If the attention character you want to
use is a control character, specify the ASCII equivalent.
System mode char. The character for the mode attention
character (above) Enter a valid attention character. If the attention character you want to
use is a control character, specify the ASCII equivalent.
When the controller encounters the attention character and the system
mode character, the controller sets channel 0 communication to system
mode. Note that the remote mode change option must be ENABLED.