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26. TRANSMISSION POTOCOL
26.1. Some basic information
The communication protocol has been designed for exchanging information
between RADWAG scales and external devices via RS-232C.
The communication protocol has been designed in the form of request
response messages.
Scales always respond after receiving a command or generated
automatically by the program after completing the command.
Using the set of commands you can fetch some information from the scale
or influence the operation of the device. E.g. It is possible to:
• Identify the scale
• Collect weighing results
• Keyboard control
• Display control
• Changes of variables
• Other
External software have to assure not sending the next command without
receiving the answer for the previous one.
26.2. Transmission parameters
• Scales are equipped in RS 232 (bidirectional) and RS485 (one
direction from the scale to an external device).
• Possibile interface settings:
Parameter Setting
Baud rate 2400 – 4800 – 9600 – 19200
Parity Even/odd/None
Data bits 7/ 8
Stop bits 1/ 2
Flow control (cannot be used in HX) No – RTS/CTS – XON/XOFF
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