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6. RS232 COMMUNICATIONS
General
Remote control will be seized by sending an RS232 character, and relinquished by
sending the LOCAL command. While in remote control the front panel buttons will be
locked out (inoperative) and the right hand decimal point will indicate remote operation
(local lock-out). RS232 parameters will be a fixed baud ate and word length. 9600
Baud, 8 Data, No parity, 1 stop bit.
Remote control of calibration has not been included. (Refer to section 4).
Protocol:
Command strings are limited to a single statement action will occur on receipt of
The “end of line” character. All actions will return a status character followed by
Data if appropriate. The status will be “•” for a successful transaction; Other
values indicate syntax error, broken probe etc.
All commands may be abbreviated to their first two letters eg. UNITS OHMS
becomes UN OH. Input delimiters will be spaces or commas.