IDEC microsmart pentra, Programming Manual

Page: 300 / 344

25: U
SER
C
OMMUNICATION
I
NSTRUCTIONS
25-4 FT1A S
MART
A
XIS
U
SER
’
S
M
ANUAL
FT9Y-B1382
Transmit Digits (Bytes)
After conversion, the transmit data is taken out in specified digits. Possible digits depend on the selected conversion type.
Example: D10 stores 010Ch (268)
(1) Binary to ASCII conversion, Transmit digits = 2
(2) BCD to ASCII conversion, Transmit digits = 3
(3) No conversion, Transmit digits = 1
Repeat Cycles
When a data register is designated to repeat, consecutive data registers, as many as the repeat cycles, are used for transmit data
in the same conversion type and transmit digits.
Example:
Data of data registers starting with D10 is converted in BCD to ASCII and is transmitted according to the designated repeat cycles.
010Ch
D10
“0”
(30h)
“1”
(31h)
“0”
(30h)
“C”
(43h)
“0”
(30h)
“C”
(43h)
ASCII data
Binary to ASCII conversion
Transmitted data
Lowest 2 digits
010Ch D10
Decimal
“0”
(30h)
“0”
(30h)
“2”
(32h)
“6”
(36h)
“8”
(38h)
Lowest 3 digits
“2”
(32h)
“6”
(36h)
“8”
(38h)
BCD to ASCII
00268
value conversion
Transmitted data ASCII data
010Ch
D10
No conversion
SOH
(01h)
FF
(0Ch)
FF
(0Ch)
Lowest 1 digit
ASCII data
Transmitted data
Data register No.:
Transmit digits:
Conversion type: D10
2
BCD to ASCII
000Ch
D10
0022h D11
0038h
D12
000Ch
D10
“1”
(31h)
“2”
(32h)
“3”
(33h)
“4”
(34h)
00012
Repeat 1
0022h D11
Decimal value
00034
BCD to ASCII conversion
Repeat 2
ASCII data
(1) Repeat cycles = 2
000Ch D10
“1”
(31h)
“2”
(32h)
“3”
(33h)
“4”
(34h)
00012
Repeat 1
0022h
D11
Decimal value
00034
BCD to ASCII conversion
Repeat 2
0038h D12 00056
Repeat 3
“5”
(35h)
“6”
(36h)
ASCII data
(2) Repeat cycles = 3