DekTec DTM-3200 User Manual page 43

Oem ts-over-ip converter
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DTM-3200 – OEM Ethernet TSoIP Converter
User Manual
Figure 13 is the reply-sequence that may be executed after the read-command of Figure 12. Afte
addressing this device, the bytes from the command are repeated followed with the 4-by
IP address.
The reply consists of the following bytes:
 Address and I
2
C write-bit (0x12 and '1')
 Category byte (0x03)
 Setting byte (0x02)
 Read byte (0x01)
 Four IP-address bytes (decimal 192.168.100.13 or hexadecimal C0.A8.64.0D)
 Checksum (0x0F, see Table 2)
Figure 13: Read subnet-mask reply
Table 2: Checksum computation
Command
Address
Category
Setting
R/W
Data byte 3
Data byte 2
Data byte 1
Data byte 0
Sum:
Checksum:
Reply
0x12
0x12
0x03
0x03
0x02
0x02
'1'
'1'
-
0xC0
-
0xA8
-
0x64
-
0x0D
0x18
0x1F1
0xE8
0x0F
43

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