Example
Content
Length
(Bytes)
HEX-value
Decimal,
ASCII
PDU
1
response
Slave address
1
23
35
Function code
1
11
17
Number of bytes (excl. slave-address,
function code, NUL and CRC)
1
26
38
Slave ID
1
53
"S"
Run status (0=inactive; FF=active)
1
FF
255
Modbus implementation version
2
27 74
10100
Separator
1
20
" "
Vendor string
7
53 6F 6D 6D
65 72 20
"Sommer "
Separator
1
20
" "
Device configuration
7
52 47 2D 33
30 20 20
“RG-30 “
Separator
1
20
" "
Software version
7
32 5F 37 31
72 30 31
2_71r01
Separator
1
20
" "
Serial number
8
34 35 31 35
31 38 32 31
45151821
NUL
1
00
CRC
2
BB D4
Table 19:
Function 17 to report slave ID
1
Protocol Data Unit
11
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Manual
89
