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Chapter 5: Standard RLL Instructions
Sum BCD Numbers (SUMBCD) (IB-522)
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Sum BCD Numbers sums up a list of consecutive 4-digit WORD BCD numbers into an
8-digit DWORD BCD result.
DS5 Used
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N/A
HPP
You specify the group's starting and ending
V- memory addresses (inclusive). When
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enabled, this instruction will add up all the
numbers in the group (so you may want
to place a differential contact driving the
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enable).
SUMBCD could be used as the first part of
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calculating an average.
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SUMBCD Parameters
• Start Address: specifies the starting address of a block of V-memory location values to be added
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together (BCD)
• End Addr (inclusive): specifies the ending address of a block of V-memory location values to be added
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together (BCD)
• Result (DWORD BCD): specifies the location where the sum of the block of V-memory BCD values
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will be placed
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Start Address ⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠ V
End Address (inclusive) ⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠ V
Result (DWORD BCD) ⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠⸠ V
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SUMBCD Example
In the following example, the SUMBCD instruction is used to total the sum of all BCD values
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in words V2000 thru V2007 and store the resulting 8-digit double word BCD value in V3000
and V3001.
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a A
b B
c C
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5-158 DL05 Micro PLC User Manual, 6th Edition, Rev. D
Parameter DL05 Range
See DL05 V-memory map - Data Words
See DL05 V-memory map - Data Words
See DL05 V-memory map - Data Words