System baud rate is 9600 8N1. That's 8 data bits, no parity, one stop bit. If testing with a PC, a null modem / crossover cable is required. Pins 2 & 3 must swap when two 'master' devices are talking with each other. Pin 5 is ground.
In the following pages, the text [cr] is used to represent a single data byte, the carriage return. This value is decimal 13 or hex 0x0D. All commands are terminated with a carriage return.
Also, in the following pages some syntax may be provided in code blocks, like this:
This is code in a block. It's how our online markdown language calls out this type of text. --! Note the grey '1' and '2', etc in the far left column. !-- These are line numbers for reference only. Don't include them in actual commands! Some sample real RS-232 commands just for reference: C[cr] F000@255:000[cr]
Screenshots of terminal output are based on the excellent RealTerm program.