11
The returned value ‘x’ is an ASCII character indicating the status of the last communication with the valve.
It can have the following values: -
Value Status Comment
0 No error Command was recognized and executed.
1 Unrecognized
command
The command sent was not recognized and has been
discarded.
2 Bad data value The data sent was in the wrong format or outside range
3 Command ignored The command was discarded.
This can happen for a number of reasons. The most common
cause is an atte
mpt to stop a service that is already stopped or
a command that is password protected.
4-9 Reserved Reserved for future use
Priority and Timing of Command Execution
Each RS-232 command is executed in the order that it is received. There is no prioritization of
RS-232
commands as is the case with digital logic commands. The digital logic commands have higher priority and
will override RS-232 commands.
The RS-232 commands generally execute within 25 mi
lliseconds or less with the following exceptions:
J (valve calibration) command can take several seconds to execute.
F (pressure unit) and T (setpoint type) commands can take up to 100 milliseconds to execute.
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