Knowledge — overflow trap

Knowledge

Allen-Bradley SLC 500 processor module used in legacy chassis systems prone to overflow trap faults

SLC 500 Overflow Trap Error 0020: Fixing the S:...

SLC 500 major fault 0020 means the overflow trap S:5/0 latched after bad math. Clearing it with OTU can keep the CPU running—but only if the rung sits after every...

SLC 500 Overflow Trap Error 0020: Fixing the S:...

SLC 500 major fault 0020 means the overflow trap S:5/0 latched after bad math. Clearing it with OTU can keep the CPU running—but only if the rung sits after every...

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