
IEC61131 User and Reference Manual
April 22, 2008
If bit 7 of the high byte is cleared, the high byte contains a command response summary.
The following table shows common values. Other values may be defined for specific
commands. Consult the documentation for the HART device.
Busy – the device is performing a function that
cannot be interrupted by this command
Command not Implemented – the command is not
defined for this device.
The low byte contains the field device status. This field is bit-mapped. The following table
shows the meaning of each bit as defined by the HART protocol specifications. Consult the
documentation for the HART device for more information.
more status available (use command 48 to read)
primary variable analog output fixed
primary variable analog output saturated
non-primary variable out of limits
primary variable out of limits
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