Method and apparatus for synchronizing an industrial controller with a redundant controller

摘要

A system and method for identifying memory modifications includes designating a first portion of a first memory as read-only (54, 81). An abort condition is identified responsive to receiving a write instruction having a target address within the first portion (60, 86). In response to the abort condition, a second portion of the first memory including at least the target address is flagged as being modified (64, 90). The write instruction is executed (66, 92)).