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The model 6300-M4 is capable of communicating with a remotely located computer via the
RS232 serial interface. Using this interface it is possible to perform all functions that are
available on the front panel.
8.1 RS232 SERIAL INTERFACE
The serial interface is a three wire interface using the signals RX, TX and GND. Each byte of
data is sent in ASCII format using 8 bits per byte, with 1 stop bit, no parity at 9600 baud.
The pin-out of the interface is as follows:
Pin 2 - Transmit (TX)
Pin 3 - Receive (RX)
Pin 5 - Signal ground (GND)
The baud rate, parity, bits per byte, and number of stop bits cannot be altered and is set to
9600, No parity, 8 bits and 1 stop bit respectively.
8.2 COMMUNICATION SYNTAX
All commands to the 6300-M4 are two letter commands. Some commands are used both to
read and write data. Others are used only to read data back from the 6300-M4. If a command
is used to write data then it is followed by the equal sign followed by the data to be written.
Each command must be terminated by a carriage return <CR. Each value returned by the
6300-M4 is terminated by a <CR> .
SECTION 8
COMMUNICATION INTERFACE
52
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