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dedshaw1612

Modicon Quantum 534: Is this fault-free logic?

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I am using proworx 32 and have a question about searching and pointers. I want to modify some logic because it takes up a lot of network space but i think i have a better and easier approach but unsure if it is allowed or will cause PLC faults. What i want to do is search a block of registers for a value. If it contains that value, i want to block move the pointer value to a table to register instruction's pointer and copy the data at that register. The reason i am concerned is i dont know if modifying a pointer value without the actual incrementing function built into the function block causes faults. I tried the help contents section but it doesn't list exact things that will cause faults in the plc. Thanks in advance

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This should work OK. Not sure I'm following the actual reason for doing that, but you can manipulate the pointer either way. Almost nothing that you can program in a Modicon Quantum will cause processor faults..... the logic entered may not function as you intended, but the PLC will continue to run and process the other logic.

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