DL06 Micro PLC User Manual, 3rd Edition, Rev. E
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Chapter 5: Standard RLL Instructions
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Managing the ASCII Strings
The following instructions can be helpful in managing the ASCII strings within the CPUs
V–memory:
• ASCII Find (AFIND) – Finds where a specific portion of the ASCII string is located in
continuous V–memory addresses. Forward and reverse searches are supported.
• ASCII Extract (AEX) – Extracts a specific portion (usually some data value) from the ASCII
find location or other known ASCII data location.
• Compare V–memory (CMPV) – This instruction is used to compare two blocks of V–
memory addresses and is usually used to detect a change in an ASCII string. Compared data
types must be of the same format (i.e., BCD, ASCII, etc.).
• Swap Bytes (SWAPB) – usually used to swap V–memory bytes on ASCII data that was written
directly to V–memory from an external HMI or similar master device via a communications
protocol. The AIN and AEX instructions have a built–in byte swap feature.
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