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Download 620 WinLoader, Version 5.4, User Manual
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3.11 Data Conversion Instructions, Continued Binary to BCD Conversion Refer to Table 3-59 for binary to BCD conversion specifications. Table 3-59 Binary to BCD Conversion Specifications SPECIFICATION DESCRIPTION CPM Compatibility 620-11/12/14/1631/1633/36 LCs Symbol Usage Converts a two's complement binary number obtained from a data manipulation instruction or preceding calculation into a 4-digit BCD number within a range of 0 to 9999; BCD value can then be outputted through a discrete output module to a field device that requires BCD-coded input data. Characteristics • Sign of original binary value can be indicated by programming a coil immediately following conversion with a send out or Push of 1 instruction programmed on next line. • An optional error/status word may be assigned to monitor for non-BCD operands (out of range, invalid data); when this occurs: – bit 11 of error/status word is asserted (set to 1) and 2048 is written to specified error address; – conversion result of zero is placed on stack; – refer to Section 4 for information on error/status word. Programming keystrokes Perform the following steps to program a binary to BCD conversion instruction in a line of logic. Step 1 2 3 4 Action Press [F9] to select Operators Logic Group. Press [F6] to select Conversion Operators Group. Press [F1] to select binary to BCD conversion instruction. Enter optional error address. Continued on next page 72 620 WinLoader Programming Reference 4/05
