Table 9.1 Ascii Conversion Table; Table 9.2 Rs-232 Standard Pin Connections - Honeywell PPT User Manual

DEC HEX ASCII
0 00 NUL
01 SOH
1
02 STX
2
03 ETX
3
04 EOT
4
05 ENQ
5
06 ACK
6
07 BEL
7
08 BS
8
09 HT
9
10 0A LF
11 0B VT
0C FF
12
0D <cr>
13
0E SO
14
15 0F SI
16 10 DLE
11 DC1
17
12 DC2
18
13 DC3
19
14 DC4
20
15 NAK
21
16 SYN
22
17 ETB
23
18 CAN
24
19 EM
25
1A SUB
26
1B ESC
27
1C FS
28
1D GS
29
1E RS
30
31 1F US
*ASCII – American Standard for Coded Information Interchange
Table 9.1 – ASCII* Conversion Table, Decimal to Hexadecimal
EIA-2323-E Pin #
Or RS-232 DB-25
Shield 1
Transmit Data (TD) 2
Receive Data (RD) 3
Request to Send 4
(RTS)
Clear to Send (CTS) 5
DCE Ready (DSR) 6
Signal Ground (SG) 7
Received Line Signal 8
Detector (DCD)
DTE Ready (DTR) 02
Ring Indicator 22
Table 9.2 – RS-232 Standard Pin Connections
KEY DEC HEX ASCII
ctrl @ 32 20
ctrl A
33 21
ctrl B
34 22
ctrl C
35 23
ctrl D
36 24
ctrl E
37 25
ctrl F
38 26
ctrl G
39 27
ctrl H
40 28
ctrl I
41 29
ctrl J
42 2A
ctrl K
43 2B
ctrl L
44 2C
ctrl M
45 2D
ctrl N
46 2E
ctrl O
47 2F
ctrl P 48 30
ctrl Q
49 31
ctrl R
50 32
ctrl S
51 33
ctrl T
52 34
ctrl U
53 35
ctrl V
54 36
ctrl W
55 37
ctrl X
56 38
ctrl Y
57 39
ctrl Z
58 3A
ctrl [
59 3B
ctrl \
60 3C
ctrl ]
61 3D
ctrl ^
62 3E
ctrl _
63 3F
Pin #
Signal
DB-9
State
3 "0", Asserted, ON, Space,
Active
2 "1" , Disasserted, OFF, Mark,
Inactive
7
Note: Some RS-485 equipment uses "+" and "-" descriptors.
The "-" corresponds to "A" and the "+" corresponds to "B".
8
6
Table 9.3 – Signal Levels
5
1
4
9
82
DEC HEX ASCII
SP 64 40 @
! 65 41 A
" 66 42 B
# 67 43 C
$ 68 44 D
% 69 45 E
& 70 46 F
' 71 47 G
( 72 48 H
) 73 49 I
* 74 4A J
+ 75 4B K
, 76 4C L
- 77 4D M
. 78 4E N
/ 79 4F O
0 80 50 P
1 81 51 Q
2 82 52 R
3 83 53 S
4 84 54 T
5 85 55 U
6 86 56 V
7 87 57 W
8 88 58 X
9 89 59 Y
: 90 5A Z
; 91 5B [
< 92 5C \
= 93 5D ]
> 94 5E ^
? 95 5F _
Signal With
Respect to SG
+3 to +25 VDC
-3 to -25 VDC
DEC HEX ASCII
96 60 '
97 61 a
98 62 b
99 63 c
100 64 d
101 65 e
102 66 f
103 67 g
104 68 h
105 69 i
106 6A j
107 6B k
108 6C l
109 6D m
110 6E n
111 6F o
112 70 p
113 71 q
114 72 r
115 73 s
116 74 t
117 75 u
118 76 v
119 77 w
120 78 x
121 79 y
122 7A z
123 7B {
124 7C |
125 7D }
126 7E ~
127 7F DEL
Threshold Voltages
Signal A With
Respect to Signal B
+1.5 to +6 VDC (Transmitter)
+0.2 to +12 VDC (Receiver)
-1.5 to -6 VDC (Transmitter)
-0.2 to -7 VDC (Receiver)