Rockwell Automation 1753-PCS-PAR Using RSLogix Guard PLUS! with GuardPLC Controllers - Manual (Page 67)

Publication 1753-UM001B-EN-P - November 2005
Check, Download, Start, and Test a Routine 4-3
Troubleshoot the Download Process
The SRS of the controller must match the SRS saved in the routine in
order to download the routine. When you specify an SRS for a
controller in a project, that SRS gets saved in the routine when you
generate code.
Check the SRS of the Controller
1. Choose Online>Communication Settings.
2. In the MAC address field, enter the MAC address of the
controller.
The MAC address is on the sticker on the side of a GuardPLC
1200 controller, on the label positioned over both lower RJ-45
connections on GuardPLC 1600/1800 controllers and I/O, or on
the front bezel of the AB-CPU module of a GuardPLC 2000
controller.
3. Click Get.
The controller responds back with the IP address and the SRS it
is currently using.
Now you know the correct SRS to use. Change the SRS and generate
code again. Then the download should work.
Update the SRS in the Controller
In some cases, most likely after a reboot due to a FAILURE_STOP, the
SRS of the controller might be the same as the SRS in the routine, but
the routine still will not download. If this happens, change the SRS to
the same number and click OK, as shown on the following page. This