NF DP420LS Instruction Manual page 106

4.2 Using Sequence Function
3. Specify the number of memory to be operated in [Memory No.] item.
4. To clear, push [Clear] soft-key. Confirmation message is displayed. Select [OK]. In the cleared
number of the memory, the sequence data at factory shipment is stored.
DP420LS/DP480LS
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