12. Communication Settings
12.1 Serial Interface
Baud rate: 9.6 ... 115.2 kBaud (adjustable on the unit or via CompactConnect software)
Data bits: 8
Parity: none
Stop bits: 1
Flow control: off
12.2 Protocol
All sensors of the CT series are using a binary protocol. They can be switched alternatively to an ASCII proto-
col. To get a fast communication the protocol has no additional overhead with CR, LR or ACK bytes.
12.3 ASCII Protocol
The models CT-SF02, CT-SF15, CT-SF22, CTH-SF02, CTH-SF10 can be switched to ASCII by changing the
first figure of block 3 of the sensor calibration code. This figure has to be changed from 0 to 4 (always +4;
that means on the CTex this figure has to be changed from 1 to 5), see Chap. 7.5.
Example: Binary: A6FG - 22KB - 0AS0 ASCII: A6FG - 22KB - 4AS0
Block 1 Block 2 Block 3 Block 1 Block 2 Block 3
i
After you have modified the sensor calibration code a reset is necessary to activate the change, see
Chap. 9.
To switch to the ASCII protocol you can also use the following command:
Decimal: 131
HEX: 0x83
Data, answer: byte 1
Result: 0 – Binary protocol
1 – ASCII protocol