« FC4A MICRO SMART USER ’S MANUAL » 14-114: D ATA C ONVERSION I NSTRUCTIONSIntroductionData conversion instructions convert data format among binary, BCD, and ASCII.The ENCO (encode), DECO (decode), and BCNT (bit count) instructions processes bit operand data.The ALT (alternate output) instruction turns on and off an output each time an input button is pressed.HTOB (Hex to BCD)Applicable CPU ModulesValid OperandsFor the valid operand number range, see pages 6-1 and 6-2.▲ Internal relays M0 through M1277 can be designated as D1. Special internal relays cannot be designated as D1.When T (timer) or C (counter) is used as S1, the timer/counter current value is read out. When T (timer) or C (counter) isused as D1, the data is written in as a preset value which can be 0 through 65535.Valid values for the source operand are 0 through 9999 (270Fh). Make sure that the source designated by S1 is within thevalid value range. If the source data is out of the valid range, a user program execution error will result, turning on specialinternal relay M8004 and the ERR LED.Since the HTOB instruction is executed in each scan while input is on, a pulse input from a SOTU or SOTD instructionshould be used as required.Valid Data TypesExample: HTOBFC4A-C10R2/C FC4A-C16R2/C FC4A-C24R2/C FC4A-D20K3/S3 FC4A-D20RK1/RS1 & FC4A-D40K3/S3X X X X XOperand Function I Q M R T C D Constant RepeatS1 (Source 1) Binary data to convert X X X X X X X X —D1 (Destination 1) Destination to store conversion results — X ▲ X X X X — —W (word) I (integer)X —S1 → D1When input is on, the 16-bit data designated by S1 is converted into BCD andstored to the destination designated by operand D1.Valid values for the source operand are 0 through 9999.HTOB(W) S1*****D1*****When a bit operand such as I (input), Q (output), M (internal relay), or R (shift register) isdesignated as the source or destination, 16 points are used.When a word operand such as T (timer), C (counter), or D (data register) is designated as thesource or destination, 1 point is used.D1D20S1D10I1HTOB(W) BinarySOTU 0D10 (0000h)BCD0D20 (0000h)1234D10 (04D2h) 4660D20 (1234h)9999D10 (270Fh) 39321D20 (9999h)
