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This program is used to construct a sequencer with both input and output sequencing. The excel file is used to design the sequencer and includes features to update the user selectable files in a PLC using DDE. The PLC program sequences the inputs meaning that the input pattern for each step determines when the sequencer advances. A mask file is used for the inputs so that those that are irrelevant for a particular step can be ignored. This program does not use the classic sequencer instructions but uses MEQ and MOV instructions with indirect addressing instead. This leaves the end user more flexibility for controlling the step number. |
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