Terminating characters, Error messages – Fluke Biomedical Cufflink User Manual
Page 79

Remote Operation
Remote Command Syntax
3
3-5
Exercise at the Controlling Device
The RESET command can be used to set values to default. The following exercise shows
how the Analyzer retains current parameter values until new values are assigned:
1. Enter the command makeann:bp=adams-150/100. This simulates a blood pressure of
150/100. The Analyzer uses default values for all other parameters.
2. Enter the command makearm. Blood pressure is still set at 150/100 from the previous
command.
3. Enter the command makearm:bp=adams-80/50. A new blood pressure of 80/50
replaces the blood pressure of 150/100.
4. Enter the command reset. The Analyzer is reset to default values. All succeeding
commands will have parameters set to the default until other values are specified.
Terminating Characters
When writing programs to control the Analyzer, place a terminating character after the
command line to mark the end of the command line. Terminate commands with any of
the following characters.
•
CR – Carriage Return
•
LF – Line Feed
•
CR LF – Carriage Return and Line Feed
•
LF CR – Line Feed and Carriage Return
If the Analyzer receives a terminating character that is not preceded by a remote
command, it sends a question mark (?) back to the controller. Use this feature to do a
communication check and verify that the Analyzer is properly connected to the
controller. After sending the terminating character to the Analyzer, wait five seconds for
the Analyzer to send a "?" back to the controller. If, after the third time, a question mark
does not appear on the controller's display, assume that the Analyzer is not correctly
connected to the controller, a cable wiring error exists, or the setup (baud rate, parity,
etc.) is wrong.
After selecting a terminating character, use the same one to terminate all commands. For
example, do not start writing a program using LF as the terminating character and then
switch to CR. If starting with LF, use it throughout the entire program.
Error Messages
The Analyzer evaluates all remote commands for validity. If a command generates an
error, an error message displays. Table 3-2 lists available error messages.