Measurement Computing Digital232 - Manual (Page 46)

Section 3 Command Descriptions
3.24
EXECUTE X
Commands sent to the Digital232 will result in no action until the unit is
instructed to execute these commands. This is done by sending an X command or a
serial terminator, which is usually the last character of a command string. Commands
sent without an X are stored in the internal buffer until an X or a serial terminator is
received. Any number of Execute commands may be inserted into the same command
string. Certain commands, such as Bit Set require an X after each command in a
string if more than one of that command is within the same string.
Example:
@ reset the Digital232
A1XA2 two Bit Set commands are within the
same string, requiring an X after each
command (unless separated by a terminator)