IDEC FC4A-C10R2, User Manual

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14: D
ATA
C
ONVERSION
I
NSTRUCTIONS
« FC4A M
ICRO
S
MART
U
SER
’
S
M
ANUAL
» 14-5
ATOH (ASCII to Hex)
Applicable CPU Modules
Valid Operands
For 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 S2, the timer/counter current value is read out. When T (timer) or C (counter) is
used as D1, the data is written in as a preset value which can be 0 through 65535.
Valid values for source S1 data to convert are 30h to 39h and 41h to 46h. Make sure that the values for each source desig-
nated by S1 and the quantity of digits designated by S2 are within the valid range. If the S1 or S2 data is out of the valid
range, a user program execution error will result, turning on special internal relay M8004 and the ERR LED.
Since the ATOH instruction is executed in each scan while input is on, a pulse input from a SOTU or SOTD instruction
should be used as required.
Valid Data Types
FC4A-C10R2/C FC4A-C16R2/C FC4A-C24R2/C FC4A-D20K3/S3 FC4A-D20RK1/RS1 & FC4A-D40K3/S3
X X X X X
Operand Function I Q M R T C D Constant Repeat
S1 (Source 1) ASCII data to conver t — — — — — — X — —
S2 (Source 2) Quantity of digits to conver t X X X X X X X 1-4 —
D1 (Destination 1) Destination to store conversion results — X
▲
X X X X — —
W (word) I (integer)
X —
S1, S1+1, S1+2, S1+3
→
D1
When input is on, the ASCII data designated by S1 as many as the quan-
tity of digits designated by S2 is conver ted into 16-bit binar y data, and
stored to the destination designated by operand D1.
Valid values for source data to conver t are 30h to 39h and 41h to 46h.
The quantity of digits to conver t can be 1 through 4.
ATOH(W) S1
*****
S2
*****
D1
*****
When a bit operand such as I (input), Q (output), M (internal relay), or R (shift register) is
designated 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 the
source or destination, 1 point is used.