7

Storing a Program to the PLC

All redundant PLCs in the GMR system must use the same application program, but different configurations:

 

 

 

 

PLC A

 

 

 

 

 

 

PLC B

 

 

 

 

 

 

PLC C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

y

y

y

Program: GMRPROG

Program: GMRPROG

Program: GMRPROG

Configuration: CONFIGA

Configuration: CONFIGB

Configuration: CONFIGC

Supplying the configuration and program as separate files, as shown above, makes it easier to perform program updates in the future.

Note: The method used for storing a program depends on whether the system has been configured to permit online changes.

HIf online changes are NOT permitted, the process shuts down all PLCs.

HIf online changes ARE permitted, a program can be stored without shutting down the PLCs. This method requires extreme caution.

It is important to match the configuration to the method (described on the following pages) you will be using. Regardless of which method you use, the system will be shut down unless the GMR configuration has online changes enabled. Configuration for online changes is described on page 6-15.

GFK-0787B

Chapter 7 Programming Information

7-31

Page 174
Image 174
GE GFK-0787B user manual Storing a Program to the PLC