Gamry ECM8, Operator'S Manual

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Appendix D -- RS232 Commands--General ECM8 Firmware Description
4 - 12
ECM8 ready for more input. The system computer should not send a new command until a ready prompt
is received.
Commands are sent to the ECM8 as ASCII strings terminated by a line feed. All control characters other
than tab and line feed are ignored. Uppercase and lowercase alpha characters, numeric characters and the
ASCII space character are also valid. One or more ASCII tab or space characters separate fields within a
command.
With the exception of the E (error) command and the V (version) command, commands do not generate
output from the ECM8, other than the Ready (*) or Error indications (?). The E and V commands generate a
hex number, which is terminated with a carriage return linefeed combination. After the carriage return line
feed, the normal Ready indication is output.
All numbers input or output are in uppercase hex (0,1,2...,A,B,C,D,E,F).
Hardware setting commands do not cause an immediate change in the hardware. Instead they generate a
change in a region of the ECM8 micro-controller RAM that shadows the register contents. Changes to the
RAM are not output to the hardware until a U (update) command is received.