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Read Authorization Mode
Example 1 - Read Authorization Mode for One DO
✦ CC1000 Address 1
✦ LT address 2, read mode for DO 8
➡ Register Address = (2 + 95) x 8 + (8 - 1) = 783
➡ RH = 783 div 256 = 3
➡ RL = 783 mod 256 = 15
Query
CC1000
CC1000
Function
Function
Address
Address
Code
Code
1
3
Reply
CC1000
CC1000
Function
Function
Address
Address
Code
Code
1
3
✦ DL = 3
➡ DO 8 Mode = Forced Off
Example 2 - Read Authorization Mode for Four DOs
✴ Note that a maximum of 4 authorization modes can be read at a time.
✦ CC1000 Address 1
✦ LT address 64, read modes for DO 5 to 8
➡ Register Address = (64 + 95) x 8 + (5 - 1) = 1276
➡ RH = 1276 div 256 = 4
➡ RL = 1276 mod 256 = 252
Query
CC1000
CC1000
Function
Function
Address
Address
Code
Code
1
3
Reply
CC1000
CC1000
Function
Function
Address
Address
Code
Code
1
3
Read Data 3
Read Data 3
high
. . .
0
✦ D1 = 1
➡ DO 5 Mode = Local Off
✦ D2 = 2
➡ DO 6 Mode = Local On
✦ D3 = 3
➡ DO 7 Mode = Forced Off
✦ D4 = 4
➡ DO 8 Mode = Forced On
CC1000 Modbus Reference 2.10e!
Register Address
Register Address
high (RH)
low (RL)
3
15
Read Data
Read Data
Byte
Byte
Count
Count
high
2
0
Register Address
Register Address
high (RH)
low (RL)
4
252
Read Data 1
Read Data 1
Byte
Byte
Count
Count
high
8
0
Read Data 4
Read Data 4
low (D3)
high
3
0
Number of Points
Number of Points
high
low
0
1
CRC
CRC
low (DL)
low
3
248
Number of Points
Number of Points
high
low
0
4
Read Data 2
Read Data 2
low (D1)
high
1
0
CRC
CRC
low (D4)
low
4
13
CRC
CRC
low
high
180
77
high
69
CRC
CRC
low
high
133
9
low (D2)
. . .
2
high
20
34/122
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