RS232 - Interface
BC8050 und BC8150
67
Version: 3.0.0
Query
Byte Name
Example
Start - frame
-
-
":"
0x3A
Address
11
0x0B
"0B"
0x30, 0x42
Function code
3
0x03
"03"
0x30, 0x33
Start address high
8
0x08
"08"
0x30, 0x38
Start address low
0
0x00
"00"
0x30, 0x30
Count high
0
0x00
"00"
0x30, 0x30
Count low
2
0x02
"02"
0x30, 0x32
Error check, LRC/
CRC
0xC6, 0xC1
"E8"
0x45, 0x38
End - frame
t1-t2-t3
CRLF
0x0D, 0x0A
The Fieldbus Box Coupler Box responds with byte count 4, i.e. 4 bytes of data are returned. The query was
for 2 analog channels, and these are now distributed over 2 words. In the analog output process image, the
first channel has the value 0x3FFF, while the second channel has the value 0x0.
Response
Byte Name
Example
Start - frame
-
-
":"
0x3A
Address
11
0x0B
"0B"
0x30, 0x42
Function code
3
0x03
"03"
0x30, 0x33
Byte Count
4
0x04
"04"
0x30, 0x34
Data 1 high byte
63
0x3F
"3F"
0x33, 0x46
Data 1 low byte
255
0xFF
"FF"
0x46, 0x46
Data 2 high byte
0
0x00
"00"
0x30, 0x30
Data 2 low byte
0
0x00
"00"
0x30, 0x30
Error check, LRC/
CRC
0xC6, 0xC1
"B0"
0x42, 0x30
End - frame
t1-t2-t3
CRLF
0x0D, 0x0A
Содержание BC8050
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Страница 44: ...Programming BC8050 und BC8150 44 Version 3 0 0 Fig 45 Build...