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Examples
Examples
Read DO Status
✦ CC1000 Address 1
✦ LT address 15 and 16
➡ Register Address = (15 - 1) div 2 = 7
➡ RH = 7 div 256 = 0
➡ RL = 7 mod 256 = 7
Query
CC1000
CC1000
Function
Function
Address
Address
Code
Code
1
3
Reply
CC1000
CC1000
Function
Function
Address
Address
Code
Code
1
3
Byte
Bit #
7
6
0xA
0xA
0xA
0xA
Data
Data
1
0
On
Off
Status
8
7
DO
LT
CC1000 Modbus Reference 2.10e!
Register Address
Register Address
high (RH)
low (RL)
0
7
Read Data
Read Data
Byte
Byte
Count
Count
high (DH)
2
0xAB
High Byte (DH)
High Byte (DH)
High Byte (DH)
High Byte (DH)
High Byte (DH)
High Byte (DH)
High Byte (DH)
High Byte (DH)
5
4
3
2
0xB
0xB
0xB
0xB
1
0
1
0
On
Off
On
Off
6
5
4
3
LT 16
LT 16
LT 16
LT 16
LT 16
LT 16
LT 16
LT 16
Number of Points
Number of Points
high
low
0
1
low (DL)
low
0xCD
6
1
0
7
6
0xC
0xC
0xC
0xC
1
1
1
1
On
On
On
On
2
1
8
7
CRC
CRC
low
high
53
203
CRC
CRC
high
225
Low Byte (DL)
Low Byte (DL)
Low Byte (DL)
Low Byte (DL)
Low Byte (DL)
Low Byte (DL)
Low Byte (DL)
Low Byte (DL)
5
4
3
2
0xD
0xD
0xD
0xD
0
0
1
1
Off
Off
On
On
6
5
4
3
LT 15
LT 15
LT 15
LT 15
LT 15
LT 15
LT 15
LT 15
1
0
0
1
Off
On
2
1
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