Rockwell Automation 1747-BSN Backup Scanner Module - Manual (Page 65)

Publication 1747-UM010B-EN-P - September 2003
Configuration and Programming 5-3
RIO Configuration Using G Files
When you program your SLC system, use the G file to configure the
scanner’s I/O image file. The Backup Scanner’s G file configuration is
based on the devices that you have on the RIO link. G file
configuration consists of setting logical device starting addresses and
the logical device image size of each physical device/adapter with
which the scanner communicates.
You enter G file configuration information using programming
software. The default RSLogix 500 G file configuration screen is shown
below. See Appendix B for further details on G file configuration.
Neither your application program nor your programming device can
access or alter the G file while on-line with the processor. To change
the G file, you must go off-line into the program file, make any
necessary changes, and download the program containing the altered
configuration. The G file consists of five words which are described
on the following page.
TIP
For RSLogix 500 version 5.50 and later, configure the
1747-BSN M0/M1 size for 5548 words so that this
non-generic G file configuration screen appears after
you click on the configure G file button. For RSLogix
500 versions prior to 5.50, configure the 1747-BSN
M0/M1 size for 5547 words in order for this
non-generic G file configuration screen to appear
after you click on the configure G file button.