Warm Restart

In a power-up sequence, the BM•CRA312•0 X80 EIO adapter module performs a complete reconfiguration. (There is no backup memory in the BM•CRA312•0 module for saving the configuration.)

A warm start occurs when, after a condition-generated shutdown, the system resumes and the programs running on that system continue at the point they were at when the shutdown occurred. No data is lost in a warm start as long as the CPU contains a valid configuration. When a warm start occurs in RUN mode, there is no requirement to re-execute the application program, even if there are detected errors on the RIO system (the CPU with Ethernet I/O scanner service, the BM•CRA312•0 module, or I/O modules are absent or inoperable).

After the CPU’s Ethernet I/O scanner service restarts, it reads from the CPU memory to get the configuration of RIO drops declared in the Control Expert configuration. The BM•CRA312•0 modules get the latest configuration.