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It is not possible to shut the equipment/line down to change processors. Windows of opportunity exists where some I/O wires can be moved from the SLC150 to the SLC5/04. This will mean that, before the changeover is complete, the machine's control code will be executing from two different PLCs.
Will one-shots work? Suppose the SLC150 finishes its scan and generates one-shot output. The 5/04 gets this output and is told to execute a one-shot
scan, reset and wait unit told to execute another one-shot scan.
The idea is that once all I/O wiring has been moved to the 5/04, then the one-shot interface can be removed along with the SLC150.
Anyone have any ideas?
Will one-shots work? Suppose the SLC150 finishes its scan and generates one-shot output. The 5/04 gets this output and is told to execute a one-shot
scan, reset and wait unit told to execute another one-shot scan.
The idea is that once all I/O wiring has been moved to the 5/04, then the one-shot interface can be removed along with the SLC150.
Anyone have any ideas?