IDEC MICRO/I HG4G-CJT22 F-B Series, User Manual, Page: 35 / 1665

WindO/I-NV4 User’s Manual
2-3
1 WindO/I-NV4 Specifications
2
WindO/
I-NV4 F
eatur
es & B
asic Oper
ations
Example: Data handling
Data type Storing 0FFF (Hex) in LDR0 Storing FFFF (Hex) in LDR0
UBIN16(W)
0FFF (Hex) is handled as 4095 (Dec). FFFF (Hex) is handled as 65535 (Dec).
BIN16(I)
0FFF (Hex) is handled as 4095 (Dec). Sign bit is 1, so FFFF (Hex) is two’s complement,
handled as -1 (Dec).
Data type Storing FFFF (Hex) in LDR0, 0FFF (Hex) in LDR1 Storing FFFF (Hex) in LDR0, FFFF (Hex) in LDR1
UBIN32(D)
0FFFFFFF (Hex) is handled as 268435455 (Dec). FFFFFFFF (Hex) is handled as 4294967295 (Dec).
BIN32(L)
The sign bit is 0, so the positive number 0FFFFFFF
(Hex) is handled as 268435455 (Dec).
Sign bit is 1, so two’s complement of the negative
number FFFFFFFF (Hex), handled as -1 (Dec).
Data type Storing 1234 (Hex) in LDR0 Storing F765 (Hex) in LDR0
BCD4(B)
The sign is 1 (Hex), so the binary-coded decimal
value of the positive number 234 (Hex),
handled as 1234 (Dec).
The sign is F (Hex), so the binary-coded decimal
value of the negative number 765 (Hex),
handled as -765 (Dec).
Data type
Storing 5678 (Hex) in LDR0, 1234 (Hex) in
LDR1
Storing 4321 (Hex) in LDR0, F765 (Hex) in
LDR1
BCD8(EB)
The sign is 1 (Hex), so the binary-coded decimal
value of the positive number 2345678 (Hex),
handled as 2345678 (Dec).
The sign is F (Hex), so the binary-coded decimal
value of the negative number 7654321 (Hex),
handled as -7654321 (Dec).
Data type Storing 0000 (Hex) in LDR0, BFA0 (Hex) in LDR1
Float32(F)
bit bit
15 0
0FFF (Hex)
LDR0
0000111111111111
bit bit
15 0
FFFF (Hex)
LDR0
111111111111 1111
bit bit
15 0
0FFF (Hex)
LDR0
1111 1111 1111 0000
+
bit bit
15 0
FFFF (Hex)
LDR0
1111 1111 1111 1111
−
bit
31 bit
0
LDR1 LDR0
00001111111111111111111111111111
0FFFFFFF (Hex)
bit
31 bit
0
LDR1 LDR0
1111111111111111111111111111
FFFFFFFF (Hex)
1111
bit
31 bit
0
LDR1 LDR0
00001111111111111111111111111111
0FFFFFFF (Hex) +
bit
31 bit
0
LDR1 LDR0
11111111111111111111111111111111
FFFFFFFF (Hex) −
bit bit
15 0
234 (Hex)
LDR0
+
0001001000110100
bit bit
15 0
765 (Hex)
LDR0
−
1111011101100101
bit
0
bit
31
2345678 (Hex)
LDR0 LDR1
+
00010010001101000101011001111000
bit
0
bit
31
7654321 (Hex)
LDR0 LDR1
−
0001 0010 0011 0100 0101 0110 0111 1111
bit bit
22 0
bit
31 bit
23
Exponent
LDR0 LDR1
Sign Significand
10111111101000000000000000000000
0000 (Hex) BFA0 (Hex)
1 01000000000000000000000 01111111
2 -2 = 0.25
2
0
+2
1
+2
2
+2
3
+2
4
+2
5
+2
6
= 127
Negative
−1.25×2
127-127
= −1.25