CONTREX CX-1200 - Manual (Page 256)

7 - 17
CX-1200 Serial Communications ASCII2 Data-Link Protocol
(Message Transmission / Response Structures)
STX 1 Byte ^B Char(2)
Address 1 or 2 ASCII characters, normally followed by a comma
Data Field Flexible field of ASCII characters defined later in this document
ETX 1 Byte ^C Char(3)
Note: The “ETX” character may be followed by “CRC” characters if “CRC Enable” is “ON”. Any refer-
ence to ASCII HEX or “0-F” refers to ASCII representation of a HEX number using ASCII charac-
ters “0-9” & “A-F”.
Functions that are included in the ASCII2 Protocol:
1) Control Acknowledgment
2) Data Read Single Parameter
3) Data Write Single Parameter
4) Control Command Send
5) Data Read Custom Engineering Units
6) Data Write Custom Engineering units
7) Data Read Parameter Title
8) Data Read Maximum Parameter Value
9) Data Read Minimum Parameter Value
10) Data Read Default Parameter Value
11) Data Read Backup Parameter Value
12) Data Read Value of the Maximum Parameter Field length
13) Data Read Parameter Control Byte