IDEC microsmart pentra, Programming Manual

Page: 147 / 344

FT1A S
MART
A
XIS
U
SER
’
S
M
ANUAL
FT9Y-B1382 11-9
11: D
ATA
C
ONVERSION
I
NSTRUCTIONS
BTOA (BCD to ASCII)
Applicable CPU Modules
Valid Devices
For the valid device address range, see pages 6-1 and 6-2 (Basic Vol.).
When T (timer) or C (counter) is used as S1 or S2, the timer/counter current value (TC or CC) is read out.
The quantity of digits to convert can be 1 through 5 for the word data type, and 1 through 10 for the double-word data type. Make sure that the
quantity of digits designated by S2 is within the valid range. If the 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 on the CPU module.
Make sure that the last destination data determined by D1+S2-1 is within the valid device range. If the derived destination device is out of the valid
device range, a user program execution error will result, turning on special internal relay M8004 and ERROR LED on the CPU module.
When a user program execution error occurs, the execution of the instruction is canceled. The value of D1 is left unchanged and the next instruction
is executed. For user program execution errors, see Chapter 4 “User Program Execution Errors” on page 4-21.
Since the BTOA 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
Word data type: S1  D1, D1+1, D1+2, D1+3, D1+4
Double-word data type: S1·S1+1  D1, D1+1, D1+2, ... , D1+9
When input is on, the 16- or 32-bit binary data designated by S1 is converted into
BCD, and converted into ASCII data. The data is read from the lowest digit as many as
the quantity of digits designated by S2. The result is stored to the destination starting
with the device designated by D1.
The quantity of digits to convert can be 1 through 5 for the word data type, and 1
through 10 for the double-word data type.
BTOA(*) S1
*****
S2
*****
D1
*****
FT1A-12 FT1A-24 FT1A-40 FT1A-48 FT1A-Touch
X X X X X
Device Function I Q M R T C D Constant Repeat
S1 (Source 1) Binary data to convert X X X X X X X X —
S2 (Source 2) Quantity of digits to convert X X X X X X X 1-5, 1-10 —
D1 (Destination 1) Destination to store conversion results — — — — — — X — —
W (word) X When a bit device such as I (input), Q (output), M (internal relay), or R (shift register) is designated as the
source, 16 points (word data type) or 32 points (double-word data type) are used.
When a word device such as T (timer), C (counter), or D (data register) is designated as the source or
destination, 1 point (word data type) or 2 points (double-word data type) are used.
I (integer) —
D (double word) X
L (long) —
F (float) —