Rockwell Automation 999 IMC S Class Compact Motion Controller (Cat. No. 4100-999-122) User Manual
Page 103
Understanding IMC-S/23x Setups
5-23
Publication 999-122 - January 1997
RIO Rack Address
The Rack Address parameter–along with the Rack Size and Starting 
Group–determine where in I/O space the IMC-S/23x "appears" to the 
RIO scanner. Enter the desired rack address for the IMC-S/23x in your 
system and press ENTER. If your are communicating with a PLC using 
RIO, do not enter 0 for the rack address. Rack 0 is reserved for use by 
the PLC for local I/O.
RIO Starting Group
The Starting Group parameter–along with the Rack Size and Rack 
Address–determine where in I/O space the IMC-S/23x "appears" to the 
RIO scanner. Toggle to the desired starting group for your application 
and press ENTER. The selectable starting group values are determined 
by the previously selected rack width as shown in the table above to 
prevent the selection of illegal addresses. 
Running the Application 
Program on Power-Up
After completing the serial port or RIO configuration, the 
IMC-S/23x asks
Toggle to
YES
and press ENTER to configure the IMC-S/23x to
automatically load its application program whenever power is applied 
to the unit. 
While developing and de-bugging an application program, the usual 
setting of this parameter is 
NO
. This causes the Standard Operator
Interface to appear on the selected operator interface serial port 
(usually B) and/or direct command mode to appear on serial port A 
whenever power is applied. When the application program is 
completed and de-bugged, this parameter should normally be set to 
YES
to cause automatic execution of the application program
whenever power is applied.
!
ATTENTION: Do not enter 0 for the rack address if 
you are using RIO to communicate with a PLC.
Run App Program on Power-up? No