TM 1–1520–238–T–3
1–6
5. The hexadecimal number to bit relationship is provided for ease of conversion.
HEXADECIMAL NUMBERS
BITS
0
0000
1
0001
2
0010
3
0011
4
0100
5
0101
6
0110
7
0111
8
1000
9
1001
A
1010
B
1011
C
1100
D
1101
E
1110
F
1111
6. ASCII conversion is interpreting more than four bits using hexadecimal conversion. The appropriate system
chapters provide an ASCII code table for character conversion. ASCII conversion is used when ASCII appears after
MEMORY DATA BIT(S) in the respective paragraph.
EXAMPLE:
17–5 SIGNAL NAME:
DEK DATA
MEMORY LOCATION: 000444
MEMORY DATA BIT(S):
12–19
(ASCII)
CONDITION:
Refer to Table 17–1 for ASCII code conversions.
SIGNAL FUNCTION:
Provides DEK characters in 8-bit ASCII word format to FCC.
REMARKS: From DEK through CPG MRTU Type III to FCC.
PASS:
If ASCII conversion corresponds to the key pressed on DEK, go to paragraph
17–6.
FAIL: Location of fault: DEK, wiring from DEK to CPG MRTU Type III, CPG MRTU Type
III. Troubleshoot wiring to isolate fault (TM 9–1230–476–20–2).
7. To convert a hexadecimal, transform the required octal to into binary and then change to hexadecimal.
8. The ASCII result of 35 from Table 17–1 is a 5.
TABLE 17–1. ASCII CODE CONVERSIONS
(BITS 12–19)
41 = A
49 = I
51 = Q
59 = Y
30 = 0
38 = 8
42 = B
4A = J
52 = R
5A = X
31 = 1
39 = 9
43 = C
4B = K
53 = S
20 = SP
32 = 2
06 = EN
44 = D
4C = L
54 = T
28 = (
33 = 3
08 = BK
45 = E
4D = M
55 = U
29 = )
34 = 4
0D = CR
46 = F
4E = N
56 = V
2A = *
35 = 5
7F = CL
47 = G
4F = O
57 = W
2B = +
36 = 6
48 = H
50 = P
58 = X
2D = –
37 = 7
