Ethernet communication
7.7 HT 2
Manual
Commissioning Manual, 05/2008, 6FC5397–4CP10–4BA0
227
(a) PLC user program: Setting the request. Wait for acknowledgement
(b) HT 2: Detects the write request. Sets the acknowledgement after ending the write
operation.
(c) PLC user program: Detects the acknowledgement. Resets the request.
(d) HT 2: Detects and resets the request. Resets the acknowledgement.
The write cycle is thus closed.
7.7.2.4 Character Map
ASCII-Code of the characters that can be displayed on HT 2
Standard characters Special characters
0010 0011 0100 0101 0110 0111
1010
1011
1100
1101
1110
1111
← Bit
7... 4
20
H
30
H
40
H
50
H
60
H
70
H
A0
H
B0
H
C0
H
D0
H
E0
H
F0
H
Bit 3...0
↓
0000
21
H
31
H
41
H
51
H
61
H
71
H
A1
H
B1
H
C1
H
D1
H
E1
H
F1
H
0001
22
H
32
H
42
H
52
H
62
H
72
H
A2
H
B2
H
C2
H
D2
H
E2
H
F2
H
0010
23
H
33
H
43
H
53
H
63
H
73
H
A3
H
B3
H
C3
H
D3
H
E3
H
F3
H
0011
24
H
34
H
44
H
54
H
64
H
74
H
A4
H
B4
H
C4
H
D4
H
E4
H
F4
H
0100
25
H
35
H
45
H
55
H
65
H
75
H
A5
H
B5
H
C5
H
D5
H
E5
H
F5
H
0101
26
H
36
H
46
H
56
H
66
H
76
H
A6
H
B6
H
C6
H
D6
H
E6
H
F6
H
0110
27
H
37
H
47
H
57
H
67
H
77
H
A7
H
B7
H
C7
H
D7
H
E7
H
F7
H
0111
28
H
38
H
48
H
58
H
68
H
78
H
A8
H
B8
H
C8
H
D8
H
E8
H
F8
H
1000
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